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Thermal Physics

New kid on the Block

 Joined: 15 Nov 2008 Post: 1
15 Nov 2008 16:26:05 IST
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can we make 100%efficient heat engine ?
Engineering Entrance , Medical Entrance , NEET , JEE Main , AIIMS , JEE Main & Advanced , Physics , Thermal Physics

can we make 100%efficient heat engine ?

Blazing goIITian

Joined: 16 Dec 2006
Posts: 1362
15 Nov 2008 16:27:47 IST
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no

Blazing goIITian

Joined: 3 Jun 2008
Posts: 695
15 Nov 2008 17:48:50 IST
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impossible...as somwer some heat has to b lost somwer or the other..

Blazing goIITian

Joined: 22 Apr 2007
Posts: 2537
15 Nov 2008 21:54:43 IST
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the @nd law of thermo prhibits it.

The efficiency of an ideal ( carnot engine ) = 1 - ( T2 / T1 )

where T2 = temp of the sink

and T1  = temp of the source

now since T2  can never be 0 ( abs zero is not possivle to achieve ) , he efficiency of an ideal ( carnot engine ) can never be 1 ( i, e, 100% )

Blazing goIITian

Joined: 26 Nov 2007
Posts: 434
16 Nov 2008 10:22:36 IST
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NO BECAUSE SOME HEAT ENERGY IS CONVERTED IN2 SM ODR ENERGY ACCORDNG 2 2ND LAW OF THERMODYNAMICS..SO we CNT CONVERT THE HEAT ENERGY IN2 100% USEFUL WORK..........HOPE DS HELP U FRN

Blazing goIITian

Joined: 26 Nov 2007
Posts: 434
16 Nov 2008 10:25:25 IST
0 people liked this

NO BECAUSE SOME HEAT ENERGY IS CONVERTED IN2 SM ODR ENERGY ACCORDNG 2 2ND LAW OF THERMODYNAMICS..SO we CNT CONVERT THE HEAT ENERGY IN2 100% USEFUL WORK..........HOPE DS HELP U FRN

Cool goIITian

Joined: 15 Nov 2008
Posts: 73
17 Nov 2008 13:41:13 IST
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no 100% efficient heat engine is not possible.....on earth it is not!

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