A reversible refrigeration cycle operates between cold and
Chapter 5, Problem 5.44(choose chapter or problem)
A reversible refrigeration cycle operates between cold and hot reservoirs at temperatures \(T_{\mathrm{C}}\) and \(T_{\mathrm{H}}\), respectively.
(a) If the coefficient of performance is 3.5 and \(T_{\mathrm{C}}=-40^{\circ} \mathrm{F}\), determine \(T_{\mathrm{H}}\), in \({ }^{\circ} \mathrm{F}\).
(b) If \(T_{\mathrm{C}}=-30^{\circ} \mathrm{C}\) and \(T_{\mathrm{H}}=30^{\circ} \mathrm{C}\), determine the coefficient of performance.
(c) If \(Q_{\mathrm{C}}=500 \mathrm{Btu}, Q_{\mathrm{H}}=800 \mathrm{Btu}\), and \(T_{\mathrm{C}}=20^{\circ} \mathrm{F}\), determine \(T_{\mathrm{H}}\), in \({ }^{\circ} \mathrm{F}\).
(d) If \(T_{\mathrm{C}}=30^{\circ} \mathrm{F}\) and \(T_{\mathrm{H}}=100^{\circ} \mathrm{F}\), determine the coefficient of performance.
(e) If the coefficient of performance is 8.9 and \(T_{\mathrm{C}}=-5^{\circ} \mathrm{C}\), find \(T_{\mathrm{H}}\), in \({ }^{\circ} \mathrm{C}\).
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