Problem 2 ( points)Refrigerant-134a at 1 MPa and 90°C is to be cooled to I MPa and 30°C in an adiabatic condenser(heat exchanger) by exchanging heat with hotter air coming

from a compressor. The air enter the compress at 100 kPa and 18 °C and is compressed steadily to 300 kPa and 27 °C with a volume flow rate of 5 m'/s (see the figure below). The air leaves the condenser at 95 kPa and 60°C. A heat loss of 20 kJ/kg occurs during the compression process. Assume a specific heats of air to be \text { constant }\left(\mathrm{c}_{v}=0.718 \frac{\mathrm{k} / \mathrm{L}}{\mathrm{kg} \times} \text { and } \mathrm{c}_{\mathrm{p}}=1.005 \frac{\mathrm{k} / \mathrm{I}}{\mathrm{kg} \times}\right) (1) All processes are steady (2) Air can be treated as ideal gas