3. The table provides steady-state operating data for a vapor-compression refrigeration cycle

using Ammonia as the working fluid. For a refrigerant mass flow rate of 0.05 kg/s. Draw the

given values and phases in a T-s diagram. Determine the (i) compressor power, (ii) refrigeration

capacity, in tons, (iii) coefficient of performance, and (iv) isentropic compressor efficiency.

(Watch "Vapor compression example")

State

1

2s

2

3/4

h[kJ/kg] 1442 [0 °C sat vap] 1475 [15 °C 5 bar] 1488 [15 °C 5 bar] 200 [sat liq at 5 bar]