A split evaporator is used to provide cooling of the refrigerator section and separate cooling of the freezer section, as shown in Fig. P9.109. Assume constant pressure in the two evaporators. How does the COP = (Q_L1 + Q_L2)/W compare to that of a refrigerator with a single evaporator at the lowest temperature?

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QH 3 Condenser 2 Wc Compressor 4 Refrigerator 5- 6 + Freezer FIGURE P9.109