Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 2 (Q.No. 1)
1.
According to Kelvin-Planck's statement of second law of thermodynamics,
Discussion:
14 comments Page 1 of 2.
Sunil Sachdeva said:
8 years ago
I agree @Subhashree.
Let us take an example of a Steam Turbine (as Heat Engine) It 's exhaust Steam give it's residual heat to Condenser. Heat exchange is not limited to Condenser, since Condenser's heat is taken away by Cooling Water/ Atmospheric Air.
Let us take an example of a Steam Turbine (as Heat Engine) It 's exhaust Steam give it's residual heat to Condenser. Heat exchange is not limited to Condenser, since Condenser's heat is taken away by Cooling Water/ Atmospheric Air.
(1)
Shivasish said:
1 decade ago
It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body is clausius's statement of second law.
Arshad said:
1 decade ago
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert all the heat energy into work.
J.d said:
1 decade ago
Indicated thermal efficiency = brake power + friction power.
Manoj said:
1 decade ago
It's impossible to construct a device which works on a cycle and produce network by exchanging heat with a single reservoir.
Busa Sravan Kumar said:
1 decade ago
It is impossible to construct a device which works on a cycle and exchange heat with a single reservoir. It means with only one reservoir we can't exchange heat if there is only one reservoir it means whole heat energy we are giving is converted into 100% work it is not possible. It became the violation of kelvin-plank statement.
Malli said:
1 decade ago
It is impossible because of have a single reservoir.
Manoj said:
10 years ago
The meaning of statement :
1. It is impossible to make a such engine which thermal efficiency is 100%.
T.E = W.D/Heat supplied.
2. All practical engine are irreversible.
3. PMM2 type machine not possible.
1. It is impossible to make a such engine which thermal efficiency is 100%.
T.E = W.D/Heat supplied.
2. All practical engine are irreversible.
3. PMM2 type machine not possible.
Robin parihar said:
9 years ago
Impossible to make an engine whose efficiency is 100%.
Nikhil said:
9 years ago
According to me, the correct answer is c.
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