Advanced Energy Systems at Steady StateAs shown in Fig.

QUESTION:

As shown in Fig. P4.97, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at \(40^{\circ} \mathrm{F}, 80 \mathrm{lbf} / \mathrm{in}^{2}\) and is compressed to \(140^{\circ} \mathrm{F}, 200 \mathrm{lbf} / \mathrm{in}^{2}\) The refrigerant exiting the compressor enters a condenser where energy transfer to air as a separate stream occurs and the refrigerant exits as a liquid at \(200 \mathrm{lbf} / \mathrm{in}^{2}, 90^{\circ} \mathrm{F}\). Air enters the condenser at \(80^{\circ} \mathrm{F}, 14.7 \mathrm{lbf} / \mathrm{in}^{2}\) with a volumetric flow rate of \(750 \mathrm{ft}^{3} / \mathrm{min}\) and exits at \(110^{\circ} \mathrm{F}\). Neglecting stray heat transfer and kinetic and potential energy effects, and assuming ideal gas behavior for the air, determine (a) the mass flow rate of refrigerant, in lb/min, and (b) the compressor power, in horsepower.