Thermal analysis True or false (24 points). (a) Energy can change its form heat

Question

Thermal analysis
True or false (24 points). (a) Energy can change its form heat to work completely without any additional effort as long as the amount of energy remains constant. (b) When a substance undergoes a throttling process through a valve, the specific enthalpies of the substance at the valve inlet and valve exit are equal. (c) Entropy change of a closed system during a process can be greater than, equal to, or less than zero. (d) The entropy generation can be greater than, equal to, or less than zero. (e) There are no irreversibilities within a system undergoing an internally reversible process. Arrha ?daal Rankine cvcle is a reversible cycle.

Explanation / Answer

A)True

B)True(In throttling process enthalpy remains constant)

C)True

D)False(It is not less than zero)

E)True

F)False(It is non-reversible)

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