Example
Show the Carnot cycle on a T-S diagram and identify the heat transfer at both the high and low temperatures, and the work output from the cycle.
- 1-2, reversible isothermal heat transfer
QH = ?TdS = TH(S2-S1) area 1-2-B-A
- 2-3, reversible, adiabatic expansion
isentropic process, S=constant (S2=S3)
- 3-4, reversible isothermal heat transfer
QL = ?TdS = TL(S4-S3), area 3-4-A-B
- 4-1, reversible, adiabatic compression
isentropic process, S1=S4
- Net work Wnet = QH - QL, the area enclosed by 1-2-3-4, the shaded area