A refrigerator with R-134a as the working fluid has a minimum temperature of −10◦C and a maximum pressure of 1 MPa. Assume an ideal refrigeration cycle, as in Fig. 9.23. Find the specific heat transfer from the cold space and that to the hot space, and the COP.

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Qu T Compressor 2. Expansion valve or D capillary tube Condenser Work Evaporator 4' 4 FIGURE 9.23 The ideal vapor-compression refrigeration cycle.