Amomonia enters a refregeration system compressor operating at steady state at -18C, 138kPa. and exit at 150C, 1724kPa. The magitude of the power input to the compressor is 7,5kW and there is heat tranfser from the compressor to the surroundings at a rate of 0.15kW. Kinetic and potential energy are negligible. Determine the inlet volumetric flow rate , in m^3/kg, first using table A-15 and then assuming ideal gas behaviour for the ammonia.