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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%


 

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%.
 

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
 

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...
 

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!
 

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!
 

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!
 

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?
 

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.

-------
Oooh, but Mr. sophiecentaur...

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

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.
 

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?
 

lyner

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

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efficiency of energy transformation
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