Consider the TS diagram of a Carnot cycle shown What amount

Consider the T-S diagram of a Carnot cycle shown. What amount of heat is rejected to the surroundings? T_H(S_3 - S_2) T_H(S_2 - S_1) T_C(S_3 - S_2) T_C(S_2 - S_1)

Solution

Answer is D, Tc(S2-S1)

The Carnot cycle is the most efficient power cycle and it is composed of four totally reversible processes

Process 1-2, isentropic compression (work in): the air compresses isentropically to the high pressure and temperature.

Process 2-3, isothermal heat transfer (heat supply): heat is supplied at constant temperature TH Process 3-4, isentropic expansion (work output): air expands isentropically from the high pressure and temperature to the low pressure and temperature

Process 4-1, isothermal heat transfer (condenser or heat rejection): heat is rejected at constant temperature TL