Mr Gilmartin with his waterwheel invention.
Posted on 12/31/2006 9:30:45 AM PST by aculeus
It's a mechanical problem that's troubled scientists since Archimedes and the ancient Greeks but now an electrician has come up with a new invention that could help save consumers thousands of pounds in energy bills.
Scotsman Ian Gilmartin, 60, and his friend Bob Cattley, 58, both from Kendal, Cumbria have invented a mini-waterwheel capable of supplying enough electricity to power a house - for free.
The contraption is designed to be used in small rivers or streams - ideal for potentially thousands of homes across Britain. It is the first off-the-shelf waterwheel system which can generate a good supply of electricity from a water fall as little as 20cm.
Mr Gilmartin, an electrician and inventor, was not prompted to think up his new device by high energy bills - he does not own a TV and has never lived in a house with electricity.
But he has a stream at the back of his house, the Beck Mickle, and with the help of Phd engineering student, Mr Cattley, now hopes to see the invention in the shops by the end of next year.
Mr Gilmartin first began experimenting three years ago with yoghurt pots and wheelie bins in the stream, before test-running a proto-type. They took the results to the Lake District National Park, and secured a £15,000 grant from the organisation's sustainability fund.
The prototype has now been working successfully at St Catherine's, a National Trust site near Windermere, opening up previously untapped energy. The waterwheel produces one to two kilowatts of power and generates at least 24 kilowatt hours of sustainable green energy in a day, just under the average household's daily consumption of around 28 kilowatt hours.
It will hope to cost around £2,000 to fully install - and will pay for itself in side two years.
The Beck Mickle 'low head' micro hydro generator could potentially provide electricity to more than 50,000 British homes and could be used industrially.
Mr Gilmartin said: "While we cannot say this provides free electricity, because of the initial cost of buying the machine, it is expected to pay for itself within two years and then greatly reduce the owner's electricity bills after then."
Waterwheels of various types have been known since Roman times and hydropower was widely used in the Middle Ages, powering most industry in Europe.
But the energy produced from the flow of water depends on the height, or head, that the water falls.
A 'high head' like a traditional water-wheel, is large, expensive and needs civil engineering. But with 'low heads' - under a 18 inches, no one had yet invented a method of successfully recovering the energy generated.
Researchers have long sought out low cost technology to exploit the vast number of suitable low head hydro sites as a source of renewable energy.
A conventional waterwheel allows the water to escape prematurely as the wheel rotates, but the Beck Mickle Hydro generator contains the water for the full drop of the device, converting around 70 per cent of the energy into electricity.
Mr Gilmartin explained, "This idea started off to answer the question, 'How do you recover energy from very, very low heads of fluid?'
"With a low head there is not very much flow, no velocity, the fluid has got to have speed, and the only way of doing it is with a water wheel, but they are big and expensive and need lots of civil engineering.
"I have come up with an answer and I don't know why anyone has not thought of it before."
Mr Gilmartin added: "You have to have a good reason for not having one. There are enormous possibilities wherever there are water flows."
Mr Gilmartin with his waterwheel invention.
I remember hearing that water power from steams in New England could fill a quarter of that area's electrical needs.
like wind turbines, this could be dandy for rural residents, especially those who live far from the grid...but what are the flat-earthers going to say when people start putting equipment like this in streams?
Spiffy!
Sounds good, but what do you do if the stream dries up during a drought?
Or maybe beavers build a dam?
The Beck Mickle 'low head' micro hydro generator ...
Hope thars no fishes in that thar stream.
This may be low head, but he has a really good flow (gallons per minute).
There's only so much energy in flowing water. Perhaps he has increased the efficiency in HIS device.
Good read. More to learn.
This should do the trick while water is falling. Falling water powered the industrial revolution until they could get the coal powered steam engine built and installed everywhere. Since the steam engine the power of falling water as found on the old mill creek has mainly been ignored.
Develop a taste for eating beaver
Would it be too gauche to suggest a Hornady SST 130 grains Winchester .270? It does wonders in adjusting a beavers attitude.
"Develop a taste for eating beaver"
Did that years ago!
;0)
LOL . Just try to put one of these on a stream in California.Your heirs MIGHT be able to power your old house after the permit process.The payoff will have been increased to 50 years after fees.
Good show. What do you do if you live somewhere flat? Give up?
Hooray. 0.0000000000001% of what nuclear power yields from similar expense.
I made that figure up, but it's perfectly reasonable to assume...
".....but what are the flat-earthers going to say when people start putting equipment like this in streams?....."
AlGore will want to tax them
Sierra Club will want to outlaw them
The Dims will insist all the poor deserve one or no one can have one...
I've had beaver......
source: http://www.newsandstar.co.uk/news/viewarticle.aspx?id=446643
Now all he has to do is invent the axle...
Have M.C. Esher build you a waterfall......
In this picture, the effective drop is not the one at the wheel itself but that of the fall after his sluicing dam; look at the drop past him and into the valley below.
Water looks clear. Traditionally silt causes wear on moving parts and replacement has been expensive.
I want to see the wheel itself.
Seems as if you could put one on the shore of a Great Lake or ocean, trap large amounts of wave water at a slightly higher level, and let the thing make juice for you.
Worse, 1000 watts won't power a microwave. Try measuring the in-rush current.
ping for later.
Oh I see, he thought of using paddles. /s
great concept and all but building anything on a stream just about anywhere can be a red tape nightmare.
great concept and all but building anything on a stream just about anywhere can be a red tape nightmare.
Actually what he did was use a belt instead of a circular wheel, this allows the full weight of the water to turn the unit for the maximum ammount of time.
pretty smart.
Well said.
As someone who has been involved with the licensing of hydro in the U.S., I have to say that while small head hydro has been around and can be used, it is the combination of fishery, endangered & threatened species, water rights, shorelines management acts, utility policy regarding interconnection to generation, and zoning, that make such approaches impossible in almost all but third world countries.
That our streams don't flow in flat earth country? ;)
"gravity head" is gh. A height of 0.2 m gives a head of 2 joules per kilogram, or 2 joules per liter for water, and 1.4 joules per liter at 70% efficiency.
Then an output of 700 watts would require a flow of 500 liters per second, or 132 gallons per SECOND, or about 8000 gpm ... say 11 gpm for every watt of output.
Description: WATEROUS PUMP 1250 GPM QUALITY BED
Actually it looks like he has artificially increased the head by moving the water laterally to increase the drop. In the photo the stream has about about a 15-20 degree angle of repose. Not much energy in that. At the end of his chute the the water drop appears to be 2Ft + at near vertical. Lots of energy there.
Maybe next Mr Gilmartin can invent the 4 legged table.
Next, it wil be banned.
Looks like a lot of moving parts to keep working properly.
In the latter case, one's wife gets a new beaver coat for her birthday.
...or when the gubmint proclaims they have the water rights and you need to pay a tax on it.
Looks good to me. This kind of contraption won't solve the energy crisis, but it will help around the edges. If only rural people can use it, so what? It will help free up power for others.
The same with wood stoves. Not everyone can use them, but if some people do, it will save oil and slightly lower the cost for others.
The only requirement, in my view, is that you have to be able to save money over a reasonable period of time. I'd love to put in solar power, for instance, but it's not cost effective. It looks as if this device might be, if it's properly developed.
We have a stream on our property, but not that close to the house. That raises other questions. What kind of power does this put out? Can the cable to the house be buried? Can the alternator-regulator be put in the cellar? It could be fairly expensive to put in a whole system, including power switches, alternator, regulator, hookup to power company feed, and so forth.
"I have come up with an answer and I don't know why anyone has not thought of it before."
Actually, it was invented about 1660 by Edward Somerset, 2nd Marquess of Worcester (not with an electrical generator, of course). It was used to drive a water pump for his show fountains.
Please ping me when you find it.
Hey, couldn't we put this in the sewers and generate power form the crap floating to the sewer farms. Sounds like a crappy idea, but it could work.
Develop a taste for eating beaver
DING DING DING DING DING DING DING DING!
NO more calls, please. We have a winner!
full Disclosure: So if the water flow doesn't supply enough head, you learn to eat beaver?
Works for me!
Cheers!
...oh, and Happy New Year!
So long as the volume is not reduced downstream, no one would ever have a need to know.
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