A 105 x 205 mm reciprocating R134a compressor operates with a suction pressure of 0.2928 MPa and a condenser pressure of 1.2 MPa. The cycle frequency is 23 cps. The evaporator load is 12.8 tons. The mechanical efficiency of compressor is 75%. The clearance volume of compressor is 5% (a) Draw the ph Diagram and Refrigeration System Diagram (b) enthalpy and temperature of superheated vapor (show interpolation) (c) mass of flash vapor entering evaporator, kg vapor/kg refrigerant (d) mass of refrigerant recirculated, kg/s (e) condenser load, kW (f) volume capacity of isentropic compressor at suction, L/s (g) volume displacement of compressor, L/s (h) actual volumetric efficiency, % (i) clearance volumetric efficiency (j) power requirement of isentropic compressor, kW (k) coefficient of performance (l) brake power output of electric motor, kW to drive isentropic compressor (m) power requirement of polytropic compressor, kW for compression efficiency of 80%
A 105 x 205 mm reciprocating R134a compressor operates with a suction pressure of 0.2928 MPa and a condenser
pressure of 1.2 MPa. The cycle frequency is 23 cps. The evaporator load is 12.8 tons. The
compressor is 75%. The clearance volume of compressor is 5%
(a) Draw the ph Diagram and Refrigeration System Diagram
(b) enthalpy and temperature of superheated vapor (show interpolation)
(c) mass of flash vapor entering evaporator, kg vapor/kg refrigerant
(d) mass of refrigerant recirculated, kg/s
(e) condenser load, kW
(f) volume capacity of isentropic compressor at suction, L/s
(g) volume displacement of compressor, L/s
(h) actual volumetric efficiency, %
(i) clearance volumetric efficiency
(j) power requirement of isentropic compressor, kW
(k) coefficient of performance
(l) brake power output of electric motor, kW to drive isentropic compressor
(m) power requirement of polytropic compressor, kW for compression efficiency of 80%
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