Consider the combination of a heat engine and a heat pump, as given in Problem 5.41, with a low temperature of 720 R. What should the high temperature be so that the heat engine is reversible? For that temperature, what is the COP for a reversible heat pump?

Data from problem 5.41

Consider a heat engine and heat pump connected as shown in Fig. P5.41. Assume that TH1 = TH2 > Tamb and determine for each of the three cases if the setup satisfies the first law and/or violates the second law.

Transcribed Image Text:

TH2 Wnet H.E. H.P. Tambient Qm w, a 4 2 3 2 b 6. 4 2 5 4 3 1 3 FIGURE P5.41 4.