efficiency of energy transformation

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Offline sandeep

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efficiency of energy transformation
« on: 14/04/2009 22:13:48 »
post the efficiency of energy transformation processes you know.
for example:the efficiency of a cfl is approximately 30%

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Offline Chemistry4me

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efficiency of energy transformation
« Reply #1 on: 15/04/2009 07:53:44 »
The efficiency of my brain is approximately 8%.

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Offline Yomi

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efficiency of energy transformation
« Reply #2 on: 15/04/2009 09:36:49 »
Mine just 2% [;D] [;D] [;D] [;D] [;D]
MAHESH

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Offline techmind

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efficiency of energy transformation
« Reply #3 on: 16/04/2009 22:00:46 »
The efficiency of converting electricity to heat by means of a heating element (electric fire, kettle etc) is 100%.  [;D]

Unfortunately the efficiency of converting heat (from burning fossil fuels or nuclear) to electricity in a power station is only around 35%.  [:(]

The efficiency of typical photovoltaic cells at converting sunlight to electricity is about 18%, or closer to 12% for the cheaper ones. The "best" lab prototypes are about 40% efficient, but are cost-prohibitive at the moment.


From family experience the fuel-economy of a new VW Polo is no better than a 10 year old VW Polo, which rather makes a mockery of any proposed government subsidy plan for new cars on the basis of any "green" credentials...
"It has been said that the primary function of schools is to impart enough facts to make children stop asking questions. Some, with whom the schools do not succeed, become scientists." - Schmidt-Nielsen "Memoirs of a curious scientist"

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lyner

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efficiency of energy transformation
« Reply #4 on: 17/04/2009 12:12:27 »
The efficiency of my brain is approximately 8%.
How can you assess the 'useful work' got out?
Certainly not reading my posts!

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Offline Chemistry4me

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efficiency of energy transformation
« Reply #5 on: 17/04/2009 12:28:30 »
Oooh, but Mr. sophiecentaur, you are anything but too modest. [:)]
If mine is 8% your must be 18% at least!

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lyner

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efficiency of energy transformation
« Reply #6 on: 17/04/2009 18:47:21 »
I was questioning the "usefulness" of what is got out  (the basic definition of efficiency) not the cleverness of the reader!

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Offline LeeE

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efficiency of energy transformation
« Reply #7 on: 17/04/2009 22:56:13 »
Oooh, but Mr. sophiecentaur...

Is Sophie a common male name in NZ?
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!

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Offline Chemistry4me

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efficiency of energy transformation
« Reply #8 on: 18/04/2009 01:31:41 »
I was questioning the "usefulness" of what is got out  (the basic definition of efficiency) not the cleverness of the reader!
Indeed, I realised. I was simply saying your brain is more useful than mine.

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Oooh, but Mr. sophiecentaur...

Is Sophie a common male name in NZ?
No, but I do not see your point.

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lyner

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efficiency of energy transformation
« Reply #9 on: 18/04/2009 22:55:51 »
Sophie is not an uncommon name for a man's boat, though! (See, picture)
My real name's Doris - LOL.

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Offline Chemistry4me

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efficiency of energy transformation
« Reply #10 on: 19/04/2009 06:07:54 »
Why are you laughing at your own name?

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lyner

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efficiency of energy transformation
« Reply #11 on: 19/04/2009 23:33:56 »
OK, it's Tarquin.
No LOL