Tuesday, November 10, 2009

Electric Cars and the Goddess of Love

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Electric Cars
and the
Re-birth of Love
and Passion!!!




In the light of my recent posts on the development of SuperCapacitors and Ionic Fluid Batteries, I felt it time to re-address the problem with electric cars.

Generally speaking, electric cars, to this present time, have been about as popular and desirable as two week old bread. Why is that do you think? Well for one thing, they are VERY very expensive. Also, they take ages to re-charge and can only go for relatively short distances on a single charge. Why with all the hype and hoopla, the government grants, and the urging of the loony fringe, have the public not embraced the electric car with a firmer grasp??

Where do the problems lie?

Electric cars have been around for a quite a long time. Edison had one on the road in 1913 but the Germans had one going in 1904. Early examples had poor quality motors with low efficiency and torque, the batteries weighed a ton and took ages to charge, and oh - not to mention that they were ugly.



Nowadays, however, the electric engines had been re-invented several times over, and the latest breed are super strong, highly efficient, and a relatively small size.

The other factors making the modern electric car more viable than earlier attempts, are the control gear, and the drive chain. These items have, in recent years, been highly perfected.



Sex and the Modern Electric Car

Certainly some of the modern up-market electric cars are things of beauty which could well inspire desire and lust. Tesla have my vote for design sexiness.

The Elephant in the Living room

However, there is one area of the design and refinement of electric cars, which still lies in the realm of the unresolved.


Truth is there is this ‘elephant in the living room’ that is not talked about too much. The glaring problem with electric cars is the battery of course.

When the Lithium Ion battery was perfected, if one can use that word, it was supposed to revolutionise electric driving. However, there are huge problems with Lithium Ion batteries; not least of these is the HUGE bit. Then there is the cost, which can amount to more than half the cost of the car. Then further again consider that the dang darn battery will last at best 3 to 4 years. On that basis, it makes no sense at all to buy one of these cars.

Never Until a Better Battery is Invented

Electric cars are IMHO doomed unless and until a seriously better and much cheaper battery is available. Then, and only then, will we see the re-birth of the electric car/bus/truck, and, like Venus, they will emerge from their shells in a glorious re-birth and seduce the population.




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Monday, November 09, 2009

Super Battery Development

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Professor Cody Friesen
and the
Development
of the
Metal-Air Ionic Fluid
Super Battery

As already discussed, “Fluidic Energy” led by Professor Cody Friesen of Arizona SU is working to build a Metal-Air Ionic Liquid battery that has up to 11 times the energy density of the top lithium-ion technologies. The other bit of encouraging news is that they aim to have the x11 strength battery for less than one-third the Li battery cost.




Professor Cody Friesen strikes me as being one of a new breed of scientist; he is young, popular with students, and a real tryer. There also appears, to my limited view, to be a rare and pleasing lack of spin doctoring, hype, and sales talk, and he seems realistic when he talks about the developments made to date.

Popular Prof.

Rate my professor.
Prof. Cody Friesen's Scorecard:
* Average Easiness: 3.0
* Average Helpfulness: 5.0
* Average Clarity: 5.0
* Hotness Total: 0
* Overall Quality: 5.0

http://friesen.asu.edu/index.html

In an interview he said that their team has not achieved the ultimate goal of a fully working battery yet. That one statement alone sorta indicates openness and honest – I like openness!!!


On the right in blue shirt

Cody Friesen and his ASU team have been experimenting with various ionic liquids, and anode materials for several years.

Some Goal!!

The team have a short-term goal of energy densities around 1Kw/h per Kg of battery weight – that is some serious punch - - and they are aiming eventually at 1.6Kw/h per Kg!!!!! That means a battery weighing just 50Kg could hold a charge of 80Kw/h – hard to credit this sort of energy density?

Ionic fluids or liquid salts have electro-chemical stability of up to 5 volts – way better than water based electrolytes. This would give much more stability and punch in any battery. Right now ionic fluids are not made in commercial quantities and are therefore very expensive; this is an area of intensive research and development in several research centres. Another problem is finding just the exactly right type of ionic fluid for the job.



Naturally enough “Fluidic Energy” and the professor are a bit coy about specifics on what they have achieved in the development of the super fluids. They are also careful when talking about another key part of their research, that is the development of the metal electrodes.

Battery electrodes essentially corrode under the intense electro-chemical activity. They grow crystal like structures or fur that can eventually lead to breakdown of the cell. Word is that “Fluidic Energy” is working at ‘encasing’ the electrodes in some form of nano-technology coating to prevent the build-up on the electrodes.

Where would you place your bet?

It is a great race, this Super Battery Race, and its good to see that there are several hopefuls in the running. Of the two we have discussed to date, which would you bet on?

Would place your money on the very secretive EEstor and its UltraCapacitor, or would it be the young and hopeful team at Fluidic Energy?



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Friday, November 06, 2009

"Fluidic Energy" versus "EEstor"

.


The Development
of a
Metal-Air Ionic Fluid
Super Battery


A cool looking young Professor Friesen

A company called “Fluidic Energy” is developing an Arizona State University research project and the main man behind the effort is Prof. Cody Friesen, professor of materials science at Arizona State Uni. In development essentially, AFAIK, are ionic fluid electrolytes for a special type of metal-air battery which would have much greater capacity than that of the very best lithium-ion batteries today.



"EEstor": 0 "Fluidic Energy": $5+million

Unlike EEstor, “Fluidic Energy” of Arizona has received a $5+ million grant from the U.S. Department of Energy, which should help speed up the work no end!! Would you think that also makes a statement, or what, about EEstor??

“Fluidic Energy” is developing the rather unusual type of new battery called a metal-air ionic battery. Batteries generally have metallic electrodes immersed in an acid or some other water based electrolyte. Instead, this new type of cell will have a special liquid salt electrolyte.



Liquid Salts

Normally salts are solids / crystals at anything but very high temperatures, however these new salts are in the form of “ionic fluids” which will be liquid at ordinary room temperatures. These ionic fluids have several major advantages as electrolytes, they will not evaporate, and they will have very much higher energy density.

Here is the really interesting bit; Fluidic Energy is working on a battery that has 11 times more capacity than the same size of lithium-ion battery.

Say that again.

I said; “11 times more juice can be stuffed into this new type of battery”, and what that means is that an electric car with one of these batteries fitted could go for more than 1400km on a single charge, instead of the 140km or so of a current electric car.

Now that is not all of the interesting news either - more in the next post.




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Thursday, November 05, 2009

More Comment on EEstor

.



EESU Charging Infrastructure

The EEstor issue has cause quite a bit of activity and interest on this blog, be it for real or just another stock promotion scam. Comments are flowing in on the subject. When I get comments that are intelligent, relevant, and current, I like to publish them as a post. The following IMHO is one such comment.



Comment from "hendersn":

If EESU's (Electrical Energy Storage Units) are used to store energy at the 'gas' stations, they can provide the high transfer rates necessary to 'fuel' the cars.

Yes, many EESU's would be required at a given 'gas' station to ensure that the peak usage wouldn't exceed the storage capacity, but as long as the average energy consumed over a day by fueling cars doesn't exceed grid capacity to the 'gas' station, this is feasible.

If you can charge the station's EESU's at off peak times, you can actually improve grid efficiency by reducing the ratio of peak to average power delivery.




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Wednesday, November 04, 2009

EEstor Comment

.

EEstor Comment


I received an interesting comment on the EEstor ultracapacitor, which pointed out that if the thing actually works, there would be still some problems regarding charging times for electric cars.


Comment from Craig:

Tony,
Whether the ultracapacitors every materialize as cheap units for small consumer electronics remains to be seen, but they will not provide the dream of a quick refill that you envisage.

The problem is common to all electric cars:
Petrol has an energy density of about 10kWh/kg ~ 12kWh/litre.
A 60 litre fuel tank will hold 800kWh of energy, which is approximately 3GJoules.
Say a refill takes 5 minutes=300seconds (a quick coffee!).
The energy flux is now 3GJ/300s=10MW !!
The problem is not whether the battery can hold the charge (although this is an issue) but that the infrastructure to provide the flow of energy is very significant. That's why I don't think people will willing give up liquid fuels for transport!

Thank you for your informed comment Craig. I would be coming from a nuts and bolts background myself I did a few simple calculations. The EEstor example is given for a 52Kw/h capacitor/battery. As far as I know, these units (if for real) are supposed to work at high voltages.

If we take an operating voltage of say 2000 volts and a capacity of 52Kw/h it would take 26 amps of current 1 hour to charge the battery. 130 amps of current would do the job in 10 minutes. 260 amps would do it in 5 minutes.

Granted, these voltages and currents would present some problems but it would not be impossible to create an infrastructure to accommodate perhaps a less ambitious target of say 15 minutes.

IMHO It is not a question of choice regarding liquid fuels - we simply will have to consider a radically different approach. It may indeed not be ultracapacitors, but for sure carbon based fuels will need to eventually be phased out completely.



.

Friday, October 30, 2009

TV Programme on Wood Pellet Heating

.

TV Researcher wants to talk to
WoodPellet Owners



Had a bad experience with wood pellet heating, maybe got poor or no satisfaction from installers or sellers?? This might be a chance to achieve some satisfaction.

Last call, at least on this blog, for anyone who has had a bad experience with Wood Pellet Heating. A production company who is producing a series for RTE TV is currently talking to people with wood pellet problems.

If you are willing to be interviewed - please make contact with me at: thenewoil at gmail dot com. and I will pass on your details.



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Wednesday, October 28, 2009

Zenn and the Art of Electric Car Making

.


Zenn
and the

Art of Electric Car Making


Ian Clifford is the founder and chief executive of Toronto-based ZENN Motor Company Inc. formerly Feel Good Cars.

ZENN Motors is said to hold a minority stake in EEstor. Zenn Motors future is now set to sink or swim on one single factor – the delivery, within 2 months, of a viable ultracapacitor storage unit by EEstor. The word on the wires is that ZENN is expected to lose some $9 million or six times its $1.5 million or so annual turnover.


Ian Clifford at the Zenn Plant

ZENN recently decided to move away from making cars and instead it would put its energies into developing an EEStor ultracapacitor based electric drive train called ZENNergy. The idea is to sell it to other car makers worldwide.

Now that would be just darn tootin dandy if the EEstor battery / ultracapacitor thing-a-me-bob actually works.

Here we have an electric car manufacturer in deep financial manure basing its entire survival on a very very long shot from a company which has played its cards so close to its chest that you couldn’t get a rat’s squeak in.

Question is, would you invest your life’s savings in either of these two companies??


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Tuesday, October 27, 2009

The Neverending EEstor Story

.



The Neverending
EEstor Story




Well then my last post on the EEstor Ultracapacitor battery thingy started quite a flurry of hits on the site and a few comments too.

Stage Trick?

Most stage magic tricks depend on mis-direction, or not showing the audience what you don't want them to see. The old sawing the lady in half trick simply depends on not showing what is actually happening, and at the same time suggesting something completely different.

When Steorn announced their 'free energy' device, the one thing we were not shown was a working device - I wonder ever why??

I want to believe but - -

I want to be a believer and live in the land of the hopeful but - a few things point me towards a fishy odor.

Firstly, EEstor has been very assiduous indeed in not showing their ultracapacitor. While at the same time making a lot of noise about the great benefits and the research etc. etc. Does that remind you of any particular strategy??

Secondly, the US Department of Energy (DOE) has just announced their awards and grants for the best contributions to energy efficiency. What do you know - they completely neglected to mention EEstor - now why would they do that??

Santa Clause

I cried bitterly when I discovered that Santa Clause was a scam - I really wanted to believe but the evidence was compelling, and I fell into the cold hard world of the unbeliever.

I hope and pray for some major breakthrough in our energy crisis - darn tootin we do need some and soon - and I struggle to remain hopeful.

Others feel much the same as I do. Here is one of the comments on EEstor:


I have this magic wand that can make cars fly. Just think of the money that will be saved on road construction alone. I'd happily sell you 10.7% of my company for $165 mm. Sorry you can't see it work beforehand.

Capacitors were invented almost 50 years before the battery or the light bulb for that matter. Billions of dollars have been invested into battery and capacitor technology worldwide over hundreds of years.

Barium Titanate is also a well known and highly researched dielectric compound. A quick Google search will turn up several PhD dissertations on these materials in the past couple of years alone. The problem is material science – not product commercialisation.

Zenn and Eestor, by the moves they are making, are starting to look like the game they are playing is just plain old stock promotions, and not terribly sophisticated at that.

In the past, the US has had its share of snake oil salesmen who used to sell instant cures in a bottle. The pitch has changed over the years, but human gullibility hasn’t.

Hope

Hey - I still hope that EEstor is for real - but I won't hold my breath while I am waiting to find out.






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Monday, October 26, 2009

EEstor and the Holy Grail Ultracapacitor

.


EEstor
and the Holy Grail

of Ultracapacitors

EEStor Inc. is a private (very private indeed - it is said secretive even) company based in Texas. It was founded in 2001 by Richard Weir and Carl Nelson. EEstor has just announced that it is about to launch a new ultracapacitor (battery) an EESU (Electrical Energy Storage Unit), which if it works like they say, it would be nothing short of the Holy Grail for electric cars and many other applications, and it would make many of the older types of batteries completely obsolete.

The Claim

EEStor says its ultracapacitor has several times the energy density of lithium-ion batteries. This is a fairly amazing claim and will no doubt spark much suspicion and disbelief. I will keep an open mind and live among the hopeful.

Ultracapacitors already exist and are used in some applications, hybrid cars use them. However, up until now, ultracapacitors can only take about 5 - 10% of the power/charge of a lithium-ion battery of the same size. Many scientists recon that it is next to impossible to make an ultracapacitor that can match or beat a lithium-ion battery.


Click on the image for better quality Blogger has poor image handling

For instance the EEstor EESU is reported to be some 20+% smaller in size and to have 60% less weight than that of a similar capacity lithium-ion battery. It can be charged fully in 5 minutes, unlike a lithium-ion battery that takes at least 4 hours to charge. Because of its smaller size and greatly reduced weight, a larger capacity unit can be fitted in a given space thus giving a greater range to the vehicle.

Imagine!



Just imagine an electric car, truck or bus, that can make a journey from Cork to Belfast on a single charge. Then imagine charging it up fully in the time it takes to have a quick cup of coffee. And what about a ‘battery’ that can outlast the life of the vehicle it powers. A battery that is safe and non-toxic, no fumes, heat, or flames!!

And it doesn’t even begin to stop there. Ultracapacitors could be the answer to the mass storage needed for wind turbines in order to balance out the power. They could soak up energy very quickly, and release it equally quickly. They could last decades, making them a very good choice on economic grounds, gaining over pumped storage and other types of battery. Ultra capacitors could power mobile phones, cameras etc. Your mobile would charge in a few seconds.

Ahhhh but is my imagination running away with itself a bit too soon?????




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Saturday, October 24, 2009

Holy Grail Ultracapacitor nearer the real World

.

EEstor about to announce
a viable
Ultracapacitor?



The whispers are out on the WWW that EEstor are about to test a viable ultracapacitor. This is close enough to the "holy grail" for electric car manufacturers.

Current Electric Cars are little more than a Joke!

The only thing that is holding back the all electric car is the development of a viable battery or some other high capacity energy storage unit. All of the batteries developed to date have been various combinations of the following; expensive, bulky, heavy, slow to recharge, short-lived, dangerous, or just plain useless.

An ultracapacitor on the other hand can be charged in minutes rather than hours. it can give out its power in greats blasts for fast acceleration. It can be charged and re-charged many many thousands of times - unlike chemical batteries. However, up till now, an ultracapacitor could not hold a sufficient amount of power.

An Electric Car Battery that can outlast the Car!!

The new breed of ultracapacitor, using nanotechnology, will have a capacity tens of times greater than the current types. They can be charged while having a coffee at a filling station, instead of 6 or 8 hours with current technology!

They will also be relatively cheap and light, they will not have a tendency to heat up, go on fire, or to explode, and they can outlast the life of the car!!!!

Is this just another scam? Or is the ultracapacitor really on its way to the stores??



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Thursday, October 15, 2009

Comments and Commercial Links

.






Always Happy to Post Comments
Except - -

I really like to receive comments to this blog, and I am happy to post most that I receive.

What will guarantee that a comment goes into the bin is when it comes with commercial links embedded. I have never had any commercial strings attached to this blog, and I never will.

I will also guarantee to lose comments which have little or no relevance to the post, and of course, those which could be considered abusive or indeed libelous.

But maybe I am fooling myself to think that the block-heads who keep sending me hollow comments riddled with commercial links to their sales sites will ever read or heed this rant!!!!



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TV Programme being Researched

.


A Call
to my

WoodPellet Contributors





I have been contacted by a researcher for an Irish TV production company who is researching a programme on "Wood Pellet Boilers" in Ireland. He would really like to talk to anyone who has had problems with their installations.

If you are willing to be contacted, please email me at: thenewoil at gmail dot com and I will pass on your contact details.



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Wednesday, October 14, 2009

Pretty Solar Tiles

.





PV Solar Panels
Getting Pretty

Just a quick post with a couple of photos. A friend of mine sent me a couple of photos of new style Photo Electric Panels. They now can come in the shape of very nice roof tiles and can look really well in addition to generating electricity. I wonder about the bright blue - is that optional?




In Ireland these lovely tiles would be good for keeping the rains out but would not be not much good at generating power.


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Sunday, October 04, 2009

A Word of Warning on Chinese Wind Turbines

.


Caveat Emptor



I received an e-mail a few days ago from a very disappointed user of a Chinese VAWT (Vertical axis wind turbine). I am reproducing the correspondence here. In doing so, I am omitting, by request, the name of the writer, and I am also making no evaluation or personal comment on these turbines.



I sure hope you haven’t bought a mill (wind-turbine) from Shanghai! I did, it was the biggest mistake of my life! I was even there to visit them; they just don’t produce anything besides a lot of costs and headaches! Sorry I can’t give any tips on what works, but just wanted you to know these mills from Shanghai should be avoided at all cost.
Regards,
K …



Thanks K … - Can you be a bit more specific about the model and the problems? I would like to report it but I need some specifics. I will not publish anything pointing to you or your email address.
Regards,
Tony McGinley



Hi Tony,
Thanks for the mail, My mill is a 1kw from SAWT, the first problem was that the spring to hold the brakes apart was placed too close to the axle, which in turn made a terrible scraping noise when it turned. I ended up having to take the mill down and fix the brake system with my own ideas. The next time was a magnet that got loose in the generator - that stopped the mill from turning; again I had to take down the mill.

SAWT
sent a new generator and controller, but to get it through customs I had to pay 700 USD, which is not reimbursed. The mill then worked, but after 2 weeks of good wind it had only produced 0,8kW totally, then the controller collapsed and now its not working again.

At the same time I believe it must be possible to get this system working because it’s relatively simple. I have been warned about another make of VAWT, which comes from China, it has no plates on the top or bottom of the wings, it sounds even worse!

I would be grateful if you didn’t publish my name, as it may affect my guarantee... its more for your own information.

Hope it helps,
K ...




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Tuesday, September 29, 2009

Making Savings in the Home Budget

.





On Being Thrifty


As a first post in this series, I simply want to outline some of the areas where saving can be made. I will not go into any detail in this post. These ideas were aired today on Radio Kerry and received quite a large response. Hope you find the pointers useful.



So where can the savings to be made in the average home?

1. Economical home cooking. Avoid using the oven it costs a fortune to run, get a wok, a George Foreman Grill and a slow-cooker. Cook from scratch using cheap local ingredients. Get your meat in a butchers, much cheaper than the supermarkets. Let your menus be dictated by what is on offer in the shops. Stop spending a fortune on drinks, soft drinks, and bottled water, use filtered water, tea etc. Savings €1000 to €3000 pa
2. The shopping bill. Buying the right stuff in the right places. Avoiding brand names, buy own brands or generic packaged in both food and household goods – with brand names you are just paying 30 to 60% more for the name and their massive advertising outlay.
3. Internet & Phone savings. Mobile costs are very high make calls lasting seconds on a mobile and have a chat on a land-line. Get package deals for phone and Internet and save money. Saving €200 to €500pa
4. Heating. Insulation, fuel economy etc. Easily save €200 to €400pa
5. Electricity. Saving by fitting CFL bulbs, by using Airtricity or the Gas Board saving 13% on Electricity Board prices. Take showers not baths. Try to avoid using your oven for cooking, get a wok!! Maybe consider using a Monitor to check electricity usage. Saving up to €300pa
6. Car. Careful price watching on petrol and diesel can save 7 to 8% on fuel. Using small local mechanics for service usually saves 30 to 50% but get recommendations to avoid the cowboys.
7. TV. Sky TV charges a whacking great amount for their channel deals. Go Freesat and save money.




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Friday, September 25, 2009

Sustainable Home Economics in the Recession

.



Sustainable Home Economics

I am preparing a post specifically dealing with making savings in the home budget. What sparked this idea was a letter to a radio programme I am associated with on Radio Kerry. The letter expressed worry about making ends meet ofter the prime earner in a household was made redundant.

I will be looking at easy to implement ways of making immediate savings of up to €5000 per year in an average home. I will look at energy of course, such as how to save on electrical power, on heating and insulation, but I will also look at home cooking as a way of saving energy and saving a lot of money.

These will be my own views and suggestions, as always I am not claiming any authority or specialist knowledge.

I grew up in the post WW2 recession and was imbued with thrift from an early age. I will pass on some of my ideas for what they are worth.



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Sunday, September 13, 2009

Sex XXX and Sustainable Energy!!

.





The hit counter on this blog turned 200,000 today. Any self respecting porn site would register that many hits in a day!! But, I guess, for a boring old specialist blog ranting on about sustainable energy stuff, I guess it is a little milestone worth noting.

So just a little celebration:

hip hip hooray
!!!




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Thursday, September 10, 2009

Stirling Old Stirling New

.





Stirling Old
Stirling New

Stirling Powered

Stirling True



To wrap up my series of Stirling posts, I have gathered together a bit of a mishmash of interesting bits and pieces that I hope you will enjoy reading about.



Stirling Old


As a link to the past I have included this picture of a lovely old Stirling Rider engine made in the USA. These old heavy iron engines have become real collectors items these days and are lovingly restored to pristine levels by some very dedicated enthusiasts.


A Stirling Ireland Connection

Tom Bruton recently wrote and told me that Teagasc, the agriculture and food development authority in Ireland, are putting a Stirling based bio-mass generator in their Oakpark research headquarters in Carlow, Ireland. He also suggested going to www.stirling.dk for more info about the machine they have bought.

I contacted StirlingDK, who have kindly have given me permission to use their materials and sent some interesting photos.


Stirling DK what they say about themselves

Based on more than 15 years of solid research led by the leading authority within applied Stirling engine technology, professor Henrik Carlsen, Stirling DK has today materialized as the worlds' leading provider of biomass fuelled Stirling engine systems.

Our technology enables us to convert biomass of low value, such as wood chips and straw, into high value, clean, CO2-neutral electricity and heat. And we can do this in small-scale applications with an electrical output between 10 and 500 kWe. The heat is typically used for district heating but can also be used for other purposes such as freshwater generation, cooling, or process heating.


November 15th 2008 First Irish Contract

The 35 Kilo Watt electrical output Stirling Engine by Stirling DK


A contract has been signed for the delivery of a 35 kWe /1480 kWth updraft gasifier plant to be delivered to National Research Institute (NRI) of Ireland.

A Handy sized Engine don't you think?

The plant will be fuelled by wood chips and the heat will be used for heating of buildings of the NRI . The power, which will be generated by one (1) 35 kWe SD3-E engine, will be sold to the electrical grid.

The updraft gasifier will have a capacity of 800 kW and the installation is therefore prepared for the possible later expansion by addition three 35 kWe engines. The total electrical output of the plant can thus reach 140 kWe.

This will become Stirling DK's first installation in Ireland. This market is considered to be very attractive due to Ireland's large biomass resources and strong focus on CO2-neutral energy productions.

The plant will go into operation in May 2009.



Meccano and The Fab Lab


I am not sure where this picture originates,
I just love the practical hands-on test rig!!


Don't you just love this bit of experimental engineering!! When I was a kid 50 years ago!!! I had a great love of Meccano sets and hoped I would get one each birthday and Christmas. The guys at this lab have evidently held on to their Meccano sets, along with their mother's cake mixing bowl, and used them to rig the above test rig. Just the way I love science.


Stirling on the Moon and Mars


Moon photo by Biorn McGinley


NASA has marked Stirling power conversion using the heat from fissionable material as a viable option for generation of power on the moon. They have been playing around with using a Stirling converter coupled to a relatively low-temperature < 900K, uranium dioxide fuelled, liquid-metal-cooled reactor. A similar configuration is being worked on for application on Mars.



Stirling and the Nuke

The project is being developed at the Foster Miller and Auburn University; the aim is to design and fabricate a 5kW Free-Piston Stirling converter.


Long live Stirling!

I hope you have enjoyed reading the series of Stirling posts half as much as I have enjoyed researching and writing them.

With much thanks to the Rev. Robert Stirling, who's memory will live long into the future!


Tapadh leibh Robert Stirling agus Alba!!



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Friday, September 04, 2009

On the subject of LED bulbs

.


On the Subject
of
LED Bulbs

As I am back briefly on the subject of LEDs, I am copying, with thanks to the correspondents, a couple of connected and cogent comments that came in on earlier posts. The first is from Miguel Sánchez who is an associate professor in Valencia. He keeps several blogs one of them is liked here: http://fightpc.blogspot.com/


Miguel Sánchez has left a comment on your post "The Good the LED and the Ugly part 2":

Exactly the same experience here with the same multi-led MR16 from the same eBay seller.

We both have been fooled. But I'm still trying other alternatives (Cree-based) and DIY.


The second comment comes from Colm Garvey who is in the LED business himself in Ireland:

Colm has left a new comment on your post "Led Light Comparison":

Well done Sir, we've done a couple of trade show now with our hi-power LEDs (similar technology to the Vario) and the amount of stick we took for Ecopal bulbs was unbelievable. Keep up the good work and feel free to contact us to review our lights.

Regards,
Colm Garvey



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Thursday, September 03, 2009

LED astray by CFLs

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LED astray by CFLs

Just a very short post on energy saving bulbs. If you have been reading this blog, you will know that I have taken a great interest in the development of LED (light emitting diode) lamps. I have however reached a point where I have, for the time being, tired of LEDs as a viable alternative.

The reasons are:

1. LED bulbs are way too expensive, with prices between 2 and 6 times that of equivalent output CFL (compact florescent lamps) energy saving bulbs.

2. Only the top of the line LED bulbs, costing $20 to $50 a piece, can hope to match the colour and output of a similarly rated CFL bulb.

3. The cheaper LED bulbs are just plain rubbish. The multi-led types (those with lots of little LED lamps stuffed into the front) are the worst offenders. The light output is miserable, the colour is generally poor, and they last no time at all. I have 4 such bulbs that the light has turned almost purple in and faded to a quarter of the original poor light. I have several more that have LEDs that died in the middle of the bunch.

4. I have just bought a bunch of GU10 CFL bulbs some rated at 7 watts and some at 9 watts. The colour is spot on, the light output is VERY good, they cost me under $5 a piece, they fit perfectly into every fitting I have tried them in. The size 58mm means they don't stick out like bean tins the way some of the earlier GU10 CFL bulbs did. The only negative thing I can say is that they take 20 to 30 seconds to brighten fully.


Regular GU10 bulb on the left - The CFL on the right almost exactly the same size!






For me, for the time being, it is CFL bulbs all the way in my house. When LED bulbs get to half or one third of their current high price, and when they can outlast a CFL for consistency of colour and output, I will consider the game is on again.



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Tuesday, September 01, 2009

Stirling and Sun

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Stirling and Sun





In this post I am outlining what, IMHO, is one of the most exciting developments of the Stirling engine; a solar concentrator and Stirling converter which can directly generate grid quality usable electricity.

The technology involved, with perhaps the exception of the control and automation systems, is very old indeed, how old is the mirror?, then the Reverend Robert Stirling's 1818 heat engine, and Ányos Jedlik's 1861 generator idea (yes he was the first to conceive the idea but like too many missed out on the kudos).

It has however taken quite a long time for to integrate and perfect all the systems into a practical and workable unit. Hopefully this is what has recently been achieved by Stirling Energy Systems.

Stirling Energy Systems have kindly given me permission to copy materials and have sent me some really interesting photographs of their "SunCatcher".


Try and Catch the Sun

The idea of using a mirror and Stirling to catch and convert sunlight into electricity is not a new one. There have been quite a few prototypes and development efforts. The Advanco and McDonald-Douglas Stirling units are pictured below.


Stirling based unit by McDonald Douglas




Stirling based Advanco Vanguard 63Kw


Stirling Energy Systems

SunCatcher is a 25Kw solar dish which uses a Stirling engine based converter. The convert utilises a closed-cycle, high-efficiency four-cylinder, reciprocating Stirling Engine. The engine uses a sealed cooling fluid that is recycled through the engine.




The suns heat is focused by mirrors onto the converter units receiver tubes which contain hydrogen gas. The heat pressurizes the gas in the heat exchanger tubing, the expanding gas powers the engine.




Waste heat from the Stirling engine is dissipated to the air by a radiator similar to one used in cars. The gas is cooled by a radiator system and is continually recycled within the engine during the power cycle. The conversion process does not consume water as it is a closed system.




The SunCatcher™ mirror system is an innovative radial design. The girasol (sun tracking device) is controlled by sophisticated software.




The SunCatcher's Stirling Engine based Power Conversion Unit has a peak efficiency of 31.25% one of the highest in the business.




Stirling Energy Systems should be shipping by next year so get your orders in soon. Ireland, because of our location and the greenness of the landscape (made so by all the rain and cloudy weather) need not rush out to invest in this technology. I think we will have to wait until someone comes up with "Rain Powered Technology"

Thanks to Stirling Energy Systems for permission to use photos etc.


http://www.stirlingenergy.com/how-it-works.htm





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Wednesday, August 26, 2009

Some Sterling Stirlings

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Some Sterling Stirlings


What started me reading up on the Stirling engine was research reading I was doing on some new solar energy projects. one of these projects uses a Stirling engine to convert the sun's energy into rotary motion and thus into electricity. I will write about this later on.

Lots of Modern uses for the Reverend Stirling's Invention


A variation of the Stirling engine can be used as a heat pump for refrigeration or air conditioning, when it is driven by an electric motor. There is also a machine called the "Stirling Cryocooler" which is used to liquefy air and other gases.

Wikipedia has a very interesting entry for Stirling engine uses:

"Marine engines:

The Swedish shipbuilder Kockums has built 8 successful Stirling powered submarines since the late 1980s.


They carry compressed oxygen to allow fuel combustion whilst submerged which provides heat for the Stirling engine. They are currently used on submarines of the Gotland and Södermanland classes.



They are the first submarines in the world to feature a Stirling engine air-independent propulsion (AIP) system, which extends their underwater endurance from a few days to two weeks. This capability has previously only been available with nuclear powered submarines.
"


Tiny Stirlings


There is a market in model Stirling engines, and quite a few interest groups around the world. Some of the more spectacular at demonstrating the principle are the little low pressure low temperature engines which can work from the heat of your hand or happily run for months on the heat of an Internet router. The computer component company MSI have developed a Stirling engine that uses the heat of a CPU (Central Processor Unit) to drive the fan which help cools the chip. I does not appear to have reached the shops though, I have been trying to locate a unit to play with and have failed to find one!!

The Stirling principle is used in this toy low-pressure engine


Here is a very novel and practical application of a low pressure Stirling engine
made by MSI
used as a CPU cooler fan. (Not available in the shops!!!)
(OOps just spotted this is a NorthBridge cooler not a CPU cooler)


Stirling Engine based CHP units

Micro-Generation is a term which is becoming more popular in recent times. Previously it referred almost exclusively to small domestic wind generators. Recently there is a trend to use heat in domestic gas boilers to generate electric power. The companies developing these CHP units claim that it is a a far more economical way of generating electricity than the large scale central model currently in use.

CHP Micro-Generation Efficiency Figures published by Disenco UK



Here are two examples of (CHP) combined heat and power using a modern reincarnation of the Reverend Stirling's engine. The first example is from a UK based company called Disenco.



Top above is test model of the Disenco CHP gas boiler
Below it is an artist impression of the unit



IMHO CHP units would not be of much interest as yet in Ireland , not until smart meters are introduced, where micro-generating units like the above can feed power back into the electricity network and get paid or credited, at a reasonable rate, for the power generated.

http://www.disenco.com/default.asp?id=3111


Pictured below is a very very similar unit from a New Zealand based company called Whispergen, the idea seem to be catching on in several places at once.


Stirling application by New Zealand company Whispergen


Whispergen are a Zealand based outfit. They do have agents in Europe etc. check out their site, link below. Thanks to Jim O'Riordan for the heads up on this one.

The layout of the CHP unit:
A) Gas burner: flame heats the four cylinder heads of the engine
B) Exhaust heat recovery unit: uses the exhaust heat to heat the water
C) Stirling engine: uses the heat from the burner to push pistons back and forth
D) Water heating: water is further heated as it passes through the engine
E) Wobble Yoke (inside): converts the linear motion of the pistons into
rotating motion for the alternator
F) Gas valve: supplies and regulates the gas to the burner
G) Rotary alternator (inside): generates electricity
H) Water pipe connections: delivers the hot water to the home’s hot water
cylinder and heating system

http://www.whispergen.com/



In the next Stirling post I will publish some photos of solar generators using Stirling engines.


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Tuesday, August 25, 2009

Variations on a Theme of Stirling

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Variations on a Theme
of Stirling



There are three fundamental variations of the Stirling engine. All three have two pistons but these work in different ways in the variations.


The Alpha Stirling Engine

The Alpha type Stirling engine has TWO power generating pistons. The two pistons are in separate cylinders, one hot and one cold. The Alpha configuration has a high power-to-volume ratio. It also has problems with seals and lubrication due to the high temperature of the hot piston. The hot piston generally has a hefty insulating head which adds inefficiency.


The Beta Stirling




The Beta type Stirling has only a single POWER piston. This is fitted in the same cylinder on the same shaft as a second piston called a displacer.

The displacer piston fits loosely in the cylinder and does not generate any power. It's sole purpose is to shuttle air / gas from the hot side to the cold side.

When the working gas is pushed to the hot end of the cylinder it expands and pushes on the power piston. When it is pushed to the cold end of the cylinder it contracts and the momentum of the machine, assisted by the flywheel momentum, pushes the power piston the other way to compress the gas. The beta engine avoids the difficulties of hot moving seals.


The Gamma Stirling


The Gamma Stirling is a Beta Stirling with the power piston mounted in it's own separate cylinder. The hot air/gas flows between the two cylinders as a single body. The Gamma configuration produces a lower compression ratio but has the advantage of being simpler and is often used in multi-cylinder engines.


Another diagram of the Stirling Gamma engine
close enough a layout to the working model below




Another toy model clearly showing the principle of the above diagrams


In the next post on Stirling, I will be looking at some of the interesting applications and variations of the engine.





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Monday, August 24, 2009

The Reverend Stirling's Engine

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Robert Stirling's Unique Engine
2nd post on the Reverend Stirling's Engine


Beautiful German model of a gamma Stirling engine
clearly showing the 2 piston configuration

(note the cooling fins on the power piston)


It is almost 200 years since a minister of the Church of Scotland invented a unique type of engine. His engine employed radically different techniques to anything before and much since. It took science some time to explain the principles at work, even today there are doctorates being written on aspects of the Reverend Stirling's engine.

The Stirling Engine was not Popular

The engine never really 'caught-on'. It was used mainly to drive water pumps and for some industrial purposes but compared to the steam engine, it remained little more than a curiosity.

There are two main reasons for this:

1. The engine does not produce the massive power that steam engines can produce.
2. The engine uses a direct external heat source and does not have the store of power like steam built up in a boiler. Because of this, it cannot easily or quickly accelerate, nor can it slow down quickly, due to heat lag. The Stirling engine prefers to run at a steady speed and was therefore not great for automotive purposes.

Has Stirling's Time come?


It would appear that the time have arrived come for a second coming of Robert Stirling's engine. Today we need engines to drive electricity generators and for this purpose the Stirling engine is just the biz because with electrical generator what you need is an economical motor with a steady speed and output, there is no need for acceleration.

The Stirling Design Concept

Reverend Stirling's engine directly converts heat into mechanical motion, and it does this very efficiently. Given the times 1818, almost 200 years ago, Robert Stirling's engine was very special indeed in both its concept and design.

The main advantages of the engine were (a) economy, (b) quietness of operation, (c) the ability to use just about any fuel or heat source, and (d) safety.


Wikipedia says of the Stirling Engine:

"The Stirling engine is noted for its high efficiency, quiet operation, and the ease with which it can utilize almost any heat source. This compatibility with alternative and renewable energy sources has become increasingly significant as the price of conventional fuels rises, and also in light of concerns such as peak oil and climate change. This engine is currently exciting interest as the core component of micro combined heat and power (CHP) units, in which it is more efficient and safer than a comparable steam engine. Widespread adoption of CHP could have a significant effect upon worldwide energy utilization."

In the next post I will have a go at understanding how the Stirling engine works and a look at some of the main variations of the design.



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Sunday, August 09, 2009

Gerkros Boiler Woes

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Beware of
Wood Pellet Technology!
Especially in Ireland!





The following piece came in in the form of a comment on an older post on the Gerkros Wood Pellet boiler from "Ken" who remains unidentified. It more or less echoes what I have been saying about the Irish woodpellet heater industry. I decided to post it rather than leave it be lost as a comment on a old posting.

Many design features currently found in wood pellet boilers are nothing short of "Heath Robinson" affairs. Designs are still in early development and have a long way to catch up on what is now very reliable, standard+ interchangeable, and reasonably priced hardware used in oil fired boilers. It does not surprise me in the least that Gerkros went into liquidation. Many more Irish peddlers of 2nd rate and over-priced "sustainable energy" hardware are heading for the same route. Wood pellet boilers at around €6000 a pop are still extremely bad value for money.

With a little extra manual tending, simple lumpwood boilers at around €2000 would be a much better investment, especially if you have access to timber.

Come to think of it, a lot of the hassle Balcas got about woodpellet quality in the last couple of years was probably from Gerkros owners!!


I am so glad I decided to stay away from wood pellet heating for the time being. I am keeping an eye on a couple of manufacturers who have offerings in the pipe-line. One in particular has a very good engineering history. I am hopeful for the future.


The Letter


Ken has left a new comment
on your post:
"Gerkros Boilers":


HI,

Just a note on the Gerkros 15 kW pellet boiler. I have a 2008 model of this boiler. On the surface it looks a decent enough boiler. But look a bit closer and you will find it has been made by a blacksmith with poor design and engineering. Although it is meant to have a self cleaning burner you will find it has been disabled in the computer because of poor design the ash gets behind it and jams it out.

If you own one you will also know the auger fills up with sawdust at the bottom and then the pellets cant enter it. This is not from dirty pellets. In there wisdom Gerkros have put a 50 mm auger coil in a 90 mm tube. THIS auger is continually grinding over the top of the pellets that it is not moving until they are dust .IF the auger even sat in the bottom of the tube at least it would sweep the auger clean but it runs down the centre grinding over the top of the pellets until the boiler cuts out. Then try cleaning it out they Didn't even think of putting a slide in the bottom of the hopper to stop the pellets falling in . TRY getting the auger back into the hopper when its full of pellets.

Then there is the little problem of removing the fireproof board behind the ash pan for cleaning. You can’t remove it in one piece without unbolting the burner because someone did not think about it when making it. I am slowly working through these problems but its no surprise they went bust, these problems were coming back to hunt them .If someone with a little bit of knowledge and care had studied this for one day things may have been different.


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Friday, August 07, 2009

Story of a Scotsman's Invention Re-incarnated

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A Series Outlining
The Re-Incarnation
of
Robert Stirling's 1818 Engine


It was a Scotsman that gave us TV and another Scotsman gave us one of the most fundamental laws of electro-magnetism; yet another Scotsman gave us an engine, which is experiencing a re-birth in a new incarnation after more than 100 years in mothballs.



I recoloured this photo of Robert Stirling to give it new life


Robert Stirling was born in Perthshire in Scotland. Like his father, he had an interest in engineering. However, much of his energies went in a very different direction for part of his life. He studied divinity and became a minister of the Church of Scotland with a parish at the Laigh Kirk of Kilmarnock in 1816.

The engineering ducas was in the blood nevertheless and would not remain buried for long in sermons and parish work. The Stirling ducas was duly passed on to at least two of his seven children who became locomotive engineers. They were Patrick Stirling and James Stirling.

Robert Stirling died in Galston, East Ayrshire in 1878. He left us quite an engineering legacy, his technology is being re-born in this post industrial age, it is even being considered and talked about using one of his engines on the moon!!


The Stirling Engine

Robert Stirling invented what he called the Heat Economiser also called the regenerator. He filed a patent for the economiser and an engine that utilised the principle in 1816.

An Original Prototype made by Robert Stirling


His engine had several major advantages: 1. It could not explode, because of its lower working pressure, 2. It would not cause steam burns and 3. It was very efficient and economical. It also had a few disadvantages which is why the industrial revolution left it behind. In 1818 he built the first practical version of his engine, used to pump water from a quarry.

In the next week or so, I will take a look at the development of the stirling heat engine, and then detail it's newest manifestations and uses.





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Friday, July 03, 2009

Kilgarvan Wind Turbines

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Continuing My Post on the Visit
to SWS Wind Turbine Construction Site
at Kilgarvan Co. Kerry

I apologise for the late posting of the second part of this item.
This was due to continuing problems with Google Blogger.
I had to return many time to the Blogger Editing Page as much
of the time I could either not post photographs or see
the photos already posted.
NOTE the photos in this post may not be visible at times
because of Google's continuing problems.


I finally found some windows of time when Google Blogger was actually working and started to upload the photos for this post. Unfortunately, the windows didn't last very long, so it has taken many separate sessions to upload the current set of pictures. I really do hope Google can fix their Blogger soon.

Now about the pictures. Jonathan Millar the Nordex site manager at the SWS Kilgarvan wind farm, has very kindly allowed me to publish four of his excellent photographs. These are pictures taken from the 80 meter high hub of the N90, someplace I would be a bit nervous about visiting. I want to thank Jonathan very much for looking after me on the visit and especially for letting me use these excellent pictures.


Arriving at the Construction Site

The entire mountain top is a place of spectacular natural views. As we drove towards the construction site some man made spectacular sights came into view. The massive Nordex N90 turbine with two very tall and spindly cranes in attendance is an unusual sight to say the lease.


This is the amazing scene as we drove to the construction site
where two slender 90m cranes lift the blades to the 80m high hub


Here is a second view of "daddy-long-legs" cranes during a lift


Closer in to the site the cranes look massive against the backdrop


The Blade Lift


What we really came for was to see the huge blades being lifted into the hub position 80 meters above the ground. The lift is achieved with the aid of two separate cranes. One crane bears the main weight of the hub end of the the blade, while a second lighter crane holds the tip of the blade.


Tricky business positioning the blade with two "daddy long legs" cranes!

Now just imagine you are a crane driver looking up 270 feet into the air. You are moving a huge turbine blade into position with millimeter accuracy. Thing is, you have to coordinate every move with another crane driver and taken instruction from a bloke up top. other thing is, you are doing this on the top of a mountain where every little bit of wind in the world is going to blow, and what you are lifting is a thing specifically designed to catch the wind and turn in it. Now it get to the fun bit, there is the danger that your crane could topple over if there was a big gust of wind caught the blade.

As Seen from Above

How would you like the job of the blokes up top? My head would not stand scrambling around at that kind of height. In the following section there are four photos kindly send by Jonathan Millar and reproduced with permission.


Nice view from the Hub!! Photo by Jonathan Millar



The 3 Blade Trick! Photo by Jonathan Millar

When you are up there at 270 feet, , you get a great perspective of the site and just how precarious the cranes really are. Just don't think about a sudden gust of wind and try not to look down too much!!!


Spot the guy inside the Hub directing the crane drivers?




Directing the crane drivers must be a lot of fun - achieving millimeter perfect, precisely coordinated movements using two 90 meter high cranes takes some skill!!. For sure the crane drivers don't need glasses!!



She is bloody swaying in the breeze!! Photo by Jonathan Millar.


"Move her 2mm to the right lads" Photo by Jonathan Millar.

I hope you have enjoyed this series of photographs of the amazing bit of construction work on these huge and elegant wind turbine. Again I want to thank SWS, Nordex, and Jonathan Millar for facilitating these posts.




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Thursday, June 25, 2009

Delaying new post because of Google's problems

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I have most of the material ready for another posting on the SWS wind farm at Kilgarvan. However, I am going to delay publishing for the time being because Google Blogger is so unreliable at the moment.

The second from last posting, about the Nordex N90 turbine, has half of the photos not loading much of the time.

While I was in the process of publishing that post, I had to keep returning to the Blogger site as the pictures would not publish.

I hope Google get themselves sorted soon :-(



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Saturday, June 20, 2009

Google a Victim of its own success

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Lots of problems with Google Lately
I apologise for the inconvenience


I would like to apologise to my readers for the problems they have been experiencing with accessing the photographs on Google Blogger.


Victim of its own success?

Google, at the moment, is experiencing a lot of problems. Google Mail is off-line as often as not, albeit for minutes at a time. Google News is the same, often not accessible for long periods. But the one affecting this Blog is Google Blogger.

Please try again later - this is becoming a familiar Mantra!!

For weeks now some or all of the photographs posted on Google Blogger have been unavailable for long periods. If you cannot see the pictures the problem is with Google servers not being able to handle the load. Please try again later when Google has recovered it balance somewhat!!





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Thursday, June 18, 2009

Nordex Windturbine Parts

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A Day on the Farm
Please NOTE
Google Blogger is having a lot of problems recently.
The Photos on this blog may not be visible at times.
Please try again later if that is the case.

This is the first of several posts detailing the Nordex N90 and showing some close-ups of the parts and the installation of a blade.

The SWS wind farm at Kilgarvan is a large and impressive site. There are many dirt roads running through the mountain top site, easy enough to get a bit lost up there. The wind-farm is situated on a beautiful mountaintop with absolutely stunning views.

There is about 10 Km of a really rough ride along dirt roads to the very heart of the mountain to where I was to witness the lifting and fitting of a blade to the 80 meter high hub of a Nordex N90 2.5 megawatt turbine.


Met by the Wind Miller

Nordex's site manager Jonathan Millar met me, saw to my safety, and showed me around the installation site. Jonathan has an interesting surname for a new breed of wind mill man. I was allowed to photograph the bits of a wind turbine and I got up close and personal with the massive fibre-glass blades, Jonathan even opened the base plate of one of the blades so I could have a look inside at the construction.


The Nordex N90 Spec. Sheet


The Nordex N90 Spec. Sheet. NOTE: Blogger does not give a clear picture
Please click on the picture to get better definition.




We set out from Base



Starting from Base. NOTE please click on picture for better quality


Wind turbines like the Nordex N90 with an 80 meter hub height require one heck of a big foundation. In this installation the transformer is set into the base. The large number of tower mounting bolts, which you can see on the above photo, are precision fitted. Just imaging the crane has a huge section of steel tower hanging over the base and there are a couple of bolts an inch out of place??


Not suitable for your Ford Focus


And Gear up from there!

A fairly hefty and very high-tech gearbox is used in the Nordex N90. Can you just imagine the kind of torque involved with a rotor having a wingspan of 90 meters, that is 295 feet diameter, spinning in a strong wind? To the right of the gearbox you can see the rotor hub.



The Hub


Not a Russian Space Capsule - just a Nordex Turbine Hub!

What can I say - - it is the bit that the blades are bolted onto. The ladder conjures up images of vertigo if you can imagine climbing on it while 80 meters up in the air!!


The little house on a pole - aka Nacelle



An Expensive Mobile Home said Jonathan!!

The Nacelle or box behind the turbine blades houses the gearbox, the control gear and the generator among other bits of hi-tech machinery. I remarked to Jonathan Millar that the fibre-glass nacelle would make a very nice mobile home, a very costly one he retorted.

Below are two views of the nacelle, borrowed from the Nordex web site, which gives the layout of the various mechanics and electrics. Further below is a basic listing of the parts.








1. Pitch Bearing
2. Rotor Hub
3. Pitch Drive
4. Framework
5. Yaw adjustment bearing
6. Main Rotor Shaft
7. Yaw Brakes
8. That Great Big Gearbox!
9. Holding Brake.
10. Coupling to generator.
11. The Heart of the matter - The Generator.
12. Cooler for Generator.
13. Cooler for the Gearbox.
14. Wind Sensors.
15. On-board Crane.
16. The Yaw Drive Mechanism.
17. Support of Gearbox.
18. The Nacelle Fibre-glass Housing
19. Rotor Bearing.
20. Stem of Rotor Blade.


The Fibre-glass Blades


Massive does not adequately describe the huge blades of the N90. They are also elegant and possess a certain beauty of line. The blades are in one piece and are made of fibre-glass and resin, and at the base, have a wall thickness of about 10 cm.



Time for a Walk along a Country Blade!

Above you can see Jonathan walking the length of the blade. To the left you can see the gearbox and hub, while at the blade stem, you can see the nacelle.


Blade Runner?


Fine living space inside the Blade!

The blades are hollow inside with some just cross bracing pieces to strengthen the structure. There is lightening protection cabling built into the blades.


In fact there are two for rent here!


Made from 10cm thick highly compacted fibreglass


Bit cramped inside the blade! Cross braces spoil a blade run!



In the next post I aim to show the installation site, the cranes, and the blade being lifted into position.



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Saturday, June 13, 2009

SWS Wind Farm at Kilgarvan

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SWS Natural Resources
Wind Farm at Kilgarvan



I was invited by Kevin O'Donovan of SWS to visit and photograph the installation of new turbines at the very large SWS wind farm at Kilgarvan Co. Kerry. I was introduced to Jonathan Miller the Nordex Turbine Manufacturer's site manager who facilitated my visit to the wild and beautiful mountain top site.



The site has a variety of wind turbines installed. The current phase consists of 10 Vestas V52 turbines (850kW)with a hub height of 55m, and 13 large Nordex N90 turbines (2.5MW) having an 80m hub height.

I have captured some very interesting images during my visit and got to see close up some details of the Nordex turbine. Over the next week or so, I will be publishing a series of posts with the photos and details.



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Friday, June 12, 2009

Spirit of Ireland Presentation

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Graham O'Donnell
and
Prof. Igor Shvets
presentation on youtube


Graham O'Donnell (right) and Igor Shvets gave a presentation, outlining the "Spirit of Ireland" proposal. The presentation took place on 4th June at the Institute of International and European Affairs. The Institute of International and European Affairs is a sort of think-tank. It provides a meeting place for the exchange of ideas with representatives from industry, the professions, academia, and government etc.

The presentation is quite informative have a look:

http://www.youtube.com/watch?v=kWl2TuHcY6w



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Wednesday, June 10, 2009

Spirit of Ireland Proposal

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Spirit of Ireland


In four of my very recent posts I have featured the "Spirit of Ireland" Wind-Hydro proposal. It is a proposal that has caught my imagination and that of many others. It has also sparked some questions and concerns some of which I have published. The following letter was posted as a comment to one of my posts by Graham O'Donnell the "Spirit of Ireland" project initiator. Graham O'Donnell has invested both his time and money into developing this idea. I personally hope this project prospers, and that all the questions and concerns can be fully addressed.

I think Graham O'Donnell's voice deserves a full posting and I have therefore copied his comments below:








Tony,

Thanks for your thoughts. All of the points you make have merit.

The technical approach is simple. The scale is significant. I took the decision to be bold with the launch because I believe our incremental approach in Ireland often leads up to do nothing except talk. It may be no different here. In the meanwhile we are working through a very detailed technical and fiscal plan with considerable local consultation. Over the next few months the real possibilities of this project will emerge. Thank you for your comments.

Kindest regards,

Graham O'Donnell.



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Tuesday, June 09, 2009

UK's 1st Geothermal Project?

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UK's First Deep Bore Geo-thermal Project?


The Eden Project in Cornwall, a cool looking Geo-dome visitor centre, plans to be the UK’s first deep bore geothermal hot rock-powered project.

Cornwall has large granite mass at relatively shallow depths of about 3km. Water from the proposed boreholes would emerge at 150 centigrade and be used primarily to heat the geo-domes. The rest of the heat would be turned into electricity via a heat exchanger system.

In addition to powering the Eden project the company aim to supply up to 5000 homes with electricity. The projected completion date is 2012.


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Monday, June 01, 2009

Some Thoughts on "Spirit of Ireland"

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Some of my thoughts to date
on the position of the
"Spirit of Ireland" initiative.

1. I think the basic idea of a promotion of sustainable wind based and hydro-storage energy future for Ireland is basically an excellent one. It could not only secure our energy and economic future, it could also stimulate the economy and mitigate against the effects of the deepening depression.

2. However, there are not enough leading public figures rowing in behind the idea and fronting a campaign to fire the imagination of the Irish public.

3. Also, there are some serious questions being asked about both the technical and economic viability of the project. The questioning voices come from several respected experts in their respective fields. That these voices are audible means at least that insufficient background consultation and consensus building has taken place prior to launch. In all human affairs, a unilateral approach, no matter how well meaning, can often spark some very negative responses. The negative stuff can be anything from hurt personal or professional egos, to political differences, to vested business interests, and even include some heart-felt beliefs which contradict the proposals.

4. A proposal with such a high price tag and involving every soul on the island of Ireland in deep fiscal, environmental, political, and legal questions, is for the man and woman in the street, like playing high stake poker without having all their cards in view and without a proper understanding of the rules of the game. It could also be likened to being told that you need open heart surgery and not having full trust in the doctors. It is therefore of vital importance that the minds of the people are put at ease by a barrage of technical, environmental, and economic experts all agreeing on the basics - like the surgeons all agreeing on the operation procedure. To date this has certainly NOT been the case.

5. IMHO I think it might be necessary for the "Spirit of Ireland" team to re-invent the initiative in order to bring on board the people and organisations that can persuade the public to support this huge proposal with its vast implications for the future of Ireland.

As I said, I think the basic "Spirit of Ireland" concept and proposal are worthy of consideration. I applaud the initiative that has been taken to date. I would love to see this idea grow and flourish. However, I feel that the gears of the initiative are in need of some serious lubrication at this point in time.


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Monday, May 25, 2009

Spirit of Ireland a Synopsis of the Concept

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SPIRIT of IRELAND
an attempt to simplify the concept

The Basic Idea.

· The project has been described as the Ardnacrusha (c1929) of today.
· The concept is to utilise Ireland’s endless free energy from the wind – with no pollution – and at no cost to the country.
· To build some 3000 Wind Turbines which will give lots of jobs in the building.


A Hydro-Storage Dam in Wales

· Identify 2 or 3 glacial mountain valleys to be dammed and used for pumped hydro-electric storage of the electricity. Ireland is almost unique in having natural reservoirs with a minimum of dam building needed.
· Turn these newly created waters into amenity and tourist areas. Adding to local development and jobs.
· Generate all our own electricity saving €3billion yearly going out of the country on imported fuels.
· Generate some more electricity than we need and export to UK and Europe.
· Keep Ireland pollution free and energy independent.


How is this to be arranged and managed?

· Currently there is an ad-hoc organising committee of 100% unpaid volunteers giving freely of their time and energy. It consists of engineers, scientists, accountants and others with knowledge and ability.
· The project concept needs to brought fully into the public consciousness and to be openly and co-operatively discussed by the people of Ireland.
· In the way forward there will be roadblocks, there will be vested interests, political football, localised objections, and dozens of difficulties to be overcome.


· If the People of Ireland embrace the idea it will live and prosper as did the Ardncrusha project at the birth of the State. If, on the other hand, the idea is rejected, or it gets bogged down in legislation or argument, it will die.
· If the project gets up and going, there will be a PLC formed which the people of Ireland will own 100%. It will act as a National Energy Co-operative.
· It will be open for subscription to all Irish citizens and will NOT be traded on the stock market.
· Every child in Ireland under 18 will be issued a share.
· The company will operate on behalf of the Irish People - its sole owners.
· The ownership will always remain in Irish hands.
· The project will be kept free of political interference, and out of the hands of investment corporations.

How will it progress?

· It is up to the Irish people. If the people embrace the idea it will proceed, creating a huge boost to the economy and to jobs. It has been described as the Ardnacrusha c1929 of today.
· If the people reject it will fade away.



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Wednesday, May 20, 2009

Spirit of Ireland an Idea of it's Time

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Personally, I am very excited and energised by the recent "Spirit of Ireland" energy proposal. I have been doing some research into aspects of the proposal and of the organisation, and will publish here soon a synopsis of:

(a) What exactly is proposed.
(b) The structure of the current project management.
(c) The proposed evolution of the project, ownership, funding etc. and
(d) An outline of the philosophy behind the entire proposal and how this might pan out in the future.

This exercise is more about my own need for clarification than for any other reason. I am open to correction on any misinformation that might creep into the post. Give me a few days to get to publishing stage.



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Friday, May 15, 2009

Spirit of Ireland

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Re-Birth of Irish Initiative
or just
Pie in the Sky?

I am sure many of you will have by now heard of the “Spirit of Ireland” energy initiative which was launched just over a week ago by Graham O’Donnell, an electronics engineer, who has personally funded the launch of this worthy idea. http://www.spiritofireland.org/

Ireland the land of “Rip Off” of “Gombeeen Men” of the “Brown Envelope Politics” of the “Nod and a Wink Strategy” with our Government behaving like rabbits caught in the headlamps, could well do with a galvanising co-operative initiative of some sort.

I congratulate Graham and his colleagues for taking this very brave step and wish the initiative every success, why wouldn't I, we will all benefit if it works. I recommend you take a look at the website and consider the proposals.

Some Serious Questions.

I do have some serious questions, not so much about the proposed engineering strategies, which are way beyond my ability to evaluate, but about the structure and strategies of an organisation that would aim to manage such a vast undertaking.

While applauding the initiative and wishing it every success, I have made my concerns known to “Spirit of Ireland”.


Posted on “Spirit of Ireland”

Before I could fully subscribe to any project, club, or organisation, there are a number of questions I would feel I have to ask regarding its structure. I have outlined here a set of basic questions about "Spirit of Ireland", by no means comprehensive, which I am hoping can be directly addressed and fully answered. That answers may not as yet exist for some of the posed question might indicate a lack of planning in the most fundamental foundation of the movement, and could well mitigate against its ultimate success.

I offer these questions in a constructive spirit, not implying criticism or in any way acting subversively.

1. What is the status of the named “Team” in "Spirit of Ireland"?
2. Who owns what?
3. Who makes policy and decisions?
4. How are working decisions made?
5. Who is in charge of what, what structure has the management?
6. How does someone get on the management team?
7. How does someone get sent off the management team?
8. Who gets paid for what, and who doesn’t?
9. Constitution of “Spirit of Ireland”, can we see a copy?
10. What organisational policies exist to date, and how flexible are these?
11. What planned projects exist to date, apart from the wind-hydro idea on the site, and are they set in stone or open to consultation?
12. What are the general rules for members?
13. What is the legal position of “Spirit of Ireland”?
14. How are projects to be funded?
15. What are the responsibilities implied by taking membership?


Some Published Opinions.

Other people with views and reservations, both technical and organisational, have voiced their opinions:


An opinion published in the Irish Times by Ray Kinsella.
http://www.irishtimes.com/newspaper/opinion/2009/0511/1224246254647.html


Michael Hennigan of Finfacts 12th May 2009 has some strong views:
http://www.finfacts.ie/irishfinancenews/article_1016650.shtml

Professor Philip Walton Galway has some serious technical issues with the “Spirit of Ireland” Wind-Hydro proposal.
http://www.independent.ie/opinion/letters/hot-air-over-wind-energy-proposals-1735760.html




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Tuesday, May 12, 2009

New NanoTechnology Light Emitters

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A New Way to Make Light?

I have been writing posts for some time about developments in LED (Light emitting Diode) and other forms of energy efficient lighting. While LEDs hold great promise, there are IMHO some fundamental technical limitations in the current technology.

Current LEDs are (1) not capable of matching halogen lamps in really high light output, (2) have poor colour stability, (3) produce too much heat, (4) are expensive to produce because of the need of special heat sinks, (5) are unstable in light output - again mainly because of heat and the colour dyes added, and (6) are as yet relatively inefficient.

All that may be about to change because of a recent discovery in the core science of light production at a molecular level.

Following is a very interesting article outlining this new science. It is reproduced in full with written permission from the on-line journal of the University of Rochester.







May 10, 2009

New Nanocrystals Show Potential for Cheap Lasers, New Lighting

For more than a decade, scientists have been frustrated in their attempts to create continuously emitting light sources from individual molecules because of an optical quirk called "blinking," but now scientists at the University of Rochester have uncovered the basic physics behind the phenomenon, and along with researchers at the Eastman Kodak Company, created a nanocrystal that constantly emits light.

The findings, detailed online in today's issue of Nature, may open the door to dramatically less expensive and more versatile lasers, brighter LED lighting, and biological markers that track how a drug interact with a cell at a level never before possible.

Many molecules, as well as crystals just a billionth of a meter in size, can absorb or radiate photons. But they also experience random periods when they absorb a photon, but instead of the photon radiating away, its energy is transformed into heat. These "dark" periods alternate with periods when the molecule can radiate normally, leading to the appearance of them turning on and off, or blinking.

Heat v/s Light

"A nanocrystal that has just absorbed the energy from a photon has two choices to rid itself of the excess energy—emission of light or of heat," says Todd Krauss, associate professor of chemistry at the University of Rochester and lead author on the study. "If the nanocrystal emits that energy as heat, you've essentially lost that energy."

Krauss worked with engineers at Kodak and researchers at the Naval Research Laboratory and Cornell University to discover the new, non-blinking nanocrystals.

Krauss, an expert in nanocrystals, and Keith Kahen, senior principal scientist of Kodak and an expert in optoelectronic materials and devices, were exploring new types of low-cost lighting similar to organic light-emitting diodes, but which might not suffer from the short lifespans and manufacturing challenges inherent in these diodes. Kahen, with help from Megan Hahn, a postdoctoral fellow in Krauss' laboratory, synthesized nanocrystals of various compositions.

Xiaoyong Wang, another postdoctoral fellow in Krauss laboratory, inspected one of these new nanocrystals and saw no evidence of the expected blinking phenomenon. Remarkably, even after four hours of monitoring, the new nanocrystal showed no sign of a single blink—unheard of when blinks usually happen on a scale of miliseconds to minutes.

After a lengthy investigation, Krauss and Alexander Efros from the Naval Research Laboratory concluded that the reason the blinking didn't occur was due to the unusual structure of the nanocrystal. Normally, nanocrystals have a core of one semiconductor material wrapped in a protective shell of another, with a sharp boundary dividing the two. The new nanocrystal, however, has a continuous gradient from a core of cadmium and selenium to a shell of zinc and selenium. That gradient squelches the processes that prevent photons from radiating, and the result is a stream of emitted photons as steady as the stream of absorbed photons.

Incredibly Cheap LEDs and Lasers?

With blink-free nanocrystals, Krauss believes lasers and lighting could be incredibly cheap and easy to fabricate. Currently, different color laser light is created using different materials and processes, but with the new nanocrystals a single fabrication process can create any color laser. To alter the light color, an engineer needs only to alter the size of the nanocrystal, which Krauss says is a relatively simple task.

The same is true of what could one day be OLED's successor, says Krauss. Essentially, "painting" a grid of differently sized nanocrystals onto a flat surface could create computer displays as thin as paper, or a wall that lights a room in any desired color.

This research was funded by the Eastman Kodak Company, the U.S. Department of Energy, the National Science Foundation, the University of Rochester Center for Electronic Imaging Systems, the Cornell Center for Nanoscale Systems, the Office of Naval Research, and the Alexander von Humboldt Foundation.

CONTACT: Jonathan Sherwood EMail: jonathan.sherwood@rochester.edu
585.273.4726

www.rochester.edu




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Wednesday, May 06, 2009

Regenysis, Plurion the Big Battery Burn-out?

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An Update on Vanadium Batteries

I recently received a letter from Barry Walsh with some update news on the Big Battery business - Plurion et al. Thank you very much Barry for your interesting input. Barry has allowed me to publish as is - so here you are:



Hi Tony,
My name is Barry Walsh and I just wanted to say your blog is a great source of solid info, and cheers for putting it together.

I'm involved in some research into Energy Storage at the moment and have been following the Regenysis - VRB Power - Bust saga and some of the entertaining Plurion banter on your blog. I thought it might be relevant to that it seems there is a new buyer of the IP.Prudent Energy of China owned by JD Holdings http://www.pdenergy.com/encompany.html

Vanadium batteries are becoming a poisoned chalice, so I hope they make some progress! Just thought I'd let you know,

Best Regards,
Barry Walsh




Hi Barry - Many thanks for your email. I am always very happy to receive input to the blog. I would like to publish your letter as is. Is it OK to print your name or do you wish to be anonymous?

Regards and thanks,
Tony McGinley




Hi Tony, Sure no worries, just glad to be getting involved - someone might know some more about it. I personally am interested in seeing energy storage developments, as its clear Grid 25

http://www.eirgrid.com/EirgridPortal/uploads/Announcements/EirGrid%20GRID25.pdf

- wont come in time to save many of the wind projects that are being held up, and even if the Eirgrid do sort things out quicker than expected there are still load levelling issues that will require energy storage tech.


It will be an interesting race by the looks of it - and there are some interesting talkers at the ESA meeting in Washington in May. Anyone, I'm sure I'll be talking to you again,

Thanks and Regards,
Barry Walsh.
http://www.linkedin.com/in/barrywalshcork



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