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Refrigeration and Heat Pump Cycle ApplicationsData are
Chapter 5, Problem 54P(choose chapter or problem)
Data are provided for two reversible refrigeration cycles. One cycle operates between hot and cold reservoirs at \(27^{\circ} \mathrm{C}\) and \(-8^{\circ} \mathrm{C}\), respectively. The other cycle operates between the same hot reservoir at \(27^{\circ} \mathrm{C}\) and a cold reservoir at \(-28^{\circ} \mathrm{C}\). If each refrigerator removes the same amount of energy by heat transfer from its cold reservoir, determine the ratio of the network input values of the two cycles.
Questions & Answers
QUESTION:
Data are provided for two reversible refrigeration cycles. One cycle operates between hot and cold reservoirs at \(27^{\circ} \mathrm{C}\) and \(-8^{\circ} \mathrm{C}\), respectively. The other cycle operates between the same hot reservoir at \(27^{\circ} \mathrm{C}\) and a cold reservoir at \(-28^{\circ} \mathrm{C}\). If each refrigerator removes the same amount of energy by heat transfer from its cold reservoir, determine the ratio of the network input values of the two cycles.
ANSWER:Solution 54P
Step 1 of 5
Here our aim is to determine the ratio of the net work input values of the two reversible refrigeration cycles, when they have the same source and different sink temperatures and same amount of heat transfer happens from their respective cold reservoir to the source.