Chp2 Shaft Power Cycles

Question 1

What does an isentropic process imply?

Answer 1

Reversible and adiabatic

Question 2

What are the first three thermodynamic assumptions in shaft power cycles?

Answer 2

1) isentropic processes
2) neglect ∂KE
3) No pressure losses in chamber connections

Question 3

What are the three heat addition assumptions in shaft power cycles?

Answer 3

1) Composition doesn’t change throughout
2) constant mass flow
3) Perfect heat exchange

Question 4

What happen to the three thermodynamic assumptions in real processes?

Answer 4

1) KE cannot be neglected, thus neither can ∂s
2) Losses in components
3) Imperfect HE