Ts diagrams for two reversible thermodynamic power cycles are shown in the following fig- ure. Both cycles operate between a high temperature reservoir at 500 K and a low temperature reservoir at 300 K. The process on the left is the Carnot cycle described in Section 2.9. The process on the right is a Brayton cycle, which is similar to a Carnot cycle, except that the two steps (state 1 to state 2) and (state 3 to state 4) are at constant pressure. Which cycle, if either, has a greater efficiency? Explain.

Elements Of Electromagnetics
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Ts diagrams for two reversible thermodynamic power cycles are shown in the following fig- ure. Both cycles operate between a high temperature reservoir at 500 K and a low temperature reservoir at 300 K. The process on the left is the Carnot cycle described in Section 2.9. The process on the right is a Brayton cycle, which is similar to a Carnot cycle, except that the two steps (state 1 to state 2) and (state 3 to state 4) are at constant pressure. Which cycle, if either, has a greater efficiency? Explain.
Carnot Cycle
Stirling Cycle
2
= const
T[K]
T[K]
p =
500
500
1
300
4'
3
300
4'
p= const
S
Transcribed Image Text:Carnot Cycle Stirling Cycle 2 = const T[K] T[K] p = 500 500 1 300 4' 3 300 4' p= const S
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