3 Hot region Lout Condenser Expansion valve Compressor 2 -4 lb m₁ = 30.59- min 1 Evaporator Qin Cold region P T h S State (lbf/in.²) (°F) (Btu/lb) (Btu/lb. °R) 1 10 0 102.94 0.2391 2 180 131.04 0.2391 3 180 Sat. 50.64 0.1009 4 10 Sat. 50.64 Fig. P10.9 W