Wednesday, April 25, 2007

HW #7, P3 - Efficiency and Tres for Rev. and Irrev. Cycles - 6 pts

Complete the following involving reversible and irreversible cycles.

a.) Reversible and irreversible power cycles each discharge QC to a cold reservoir at TC and receive energy QH from hot reservoirs at TH and T'H, respectively. There are no other heat transfers involved. Show that T'H> TH.

b.) Reversible and irreversible refrigeration cycles each discharge QH to a hot reservoir at TH and receive energy QC from cold reservoirs at TC and T'C, respectively. There are no other heat transfers involved. Show that T'C> TC.

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