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Unformatted text preview: Q H = 0 . 6( T H T L ) The coefcient oF perFormance oF the heat pump is = rate oF energy sought rate oF work done = Q H W See p. 219 Thus, W = Q H = . 6( T H T L ) or a Carnot heat pump, Carnot = T H T H T L 650:351 Thermodynamics Page 1 Quiz No. 6 Since = 0 . 5 Carnot , W = . 6( T H T L ) . 5 T H ( T H T L ) 1 = 1 . 2 ( T H T L ) 2 T H Note that the units on both sides are kW Thus, T L = T H r T H W 1 . 2 = 277 . 52 K = 4 . 37 C 650:351 Thermodynamics Page 2...
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- Spring '08