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THE SECOND LAW OF THERMODYNAMICS free pdf lecture notes download
Ravi Chopra

THE SECOND LAW OF THERMODYNAMICS free pdf lecture notes download

Ravi Chopra | 11-Jul-2016 |
THE SECOND LAW OF THERMODYNAMICS ,

Hi friends, here Ravi Chopra uploaded notes for Thermodynamics with title THE SECOND LAW OF THERMODYNAMICS free pdf lecture notes download. You can download this lecture notes, ebook by clicking on the below file name or icon.

If a well insulated tank of fluid is stirred by a rotating paddle wheel, the energy of the fluid increases. If the stirrer is stopped, however the energy of the fluid will not decrease and cause the stirrer to rotate in the opposite direction. The possibility of this process proceeding in the opposite direction is not excluded by the first law of Thermodynamics. Hence first law of thermodynamics does not allow us to predict whether a proposed conceived energy conversion is possible or not. 
In all the internal combustion engines fuel and air mixture is supplied at room temperature. This mixture undergoes combustion inside the engine and gives out work. Exhaust gases coming out of the engine are always at higher temperature, indicating that some heat is taken away into atmosphere. Hence, in all the IC engines only a part of the heat is converted into work. From our experience we know that if any attempt is made to convert all the heat into work, our effort will go in vain. This limitation in the extent of energy conversion has also not been addressed in first law of thermodynamics. 

 

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