The adjacent p-V diagram shows the so-called Stirling cooling cycle (refrigerator). Its working fluid is a monoatomic gas (for instance, helium). Processes 1-2 and 3-4 are isothermal: the fluid is held at constant temperature by thermal baths at temperatures T ("hot") and T. ("cold"), respectively. Processes 23 and 4+1 are isochoric: they take place at constant volumes V₂ and V₁, respectively. The heat capacity of the working fluid at constant volume, per mole, is Cy. Determine the heat absorbed by the fluid in .... the process 1→2 P 2 Th 3 1 To V₁ а. b. C. d. ... ... the process 2-3 the 3-4 process the process 4→1 e. Determine the net work done on the fluid per cycle. f. Is the cycle reversible? Explain.

The adjacent p-V diagram shows the so-called Stirling cooling cycle (refrigerator). Its working fluid is a monoatomic gas (for instance, helium). Processes 1-2 and 3-4 are isothermal: the fluid is held at constant temperature by thermal baths at temperatures T ("hot") and T. ("cold"), respectively. Processes 23 and 4+1 are isochoric: they take place at constant volumes V₂ and V₁, respectively. The heat capacity of the working fluid at constant volume, per mole, is Cy. Determine the heat absorbed by the fluid in .... the process 1→2 P 2 Th 3 1 To V₁ а. b. C. d. ... ... the process 2-3 the 3-4 process the process 4→1 e. Determine the net work done on the fluid per cycle. f. Is the cycle reversible? Explain.