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A refrigeration cycle receives energy QL from a low temperature body at TL = 250 K...

A refrigeration cycle receives energy QL from a low temperature body at TL = 250 K and rejects energy QH to a high temperature body at TH = 300 K. For each of the following cases determine whether the cycle operates reversibly, irreversible, or is impossible.

(a) QL = 1000 kJ, Wcycle = 400 kJ.

(b) QL =1500kJ,QH =1800kJ.

(c) QH = 1500 kJ, Wcycle = 200 kJ.

(d) COP=4.

Engineering   Mechanical-Engineering   
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