A reversible steady device operates between two thermal reservoirs, one at 440 K

Question

A reversible steady device operates between two thermal reservoirs, one at 440 K and one at250 K.

Part A

If no work is done on the device, what is the maximum value for the percentage of thermal energy input Qin converted to mechanical energy Wout? (Hint: Consider the entropy diagram of a reversible process and the change in entropy.)

A reversible steady device operates between two thermal reservoirs, one at 440 K and one at250 K.

Part A

If no work is done on the device, what is the maximum value for the percentage of thermal energy input Qin converted to mechanical energy Wout? (Hint: Consider the entropy diagram of a reversible process and the change in entropy.)

Explanation / Answer

I am allowed to answer only 1 question at a time

13)
effeciency = 1 - (TL/TH)
= 1- (250/440)
= 0.43 or 43 %
Answer: 0.43 or 43 %

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