Refrigeration cycle

Cycle data

Known properties

Refrigerant-134a is used as working fluid;
Pressure at the compressor inlet 300 kPa;
Pressure at the compressor outlet 1500 kPa;
The compressor has an isentropic efficiency of 90%.

Input code

using CycleSolver

@solve begin
    st1.p = 300
    st2.p = 1500
    newRefrigerationCycle[R134a]
        compressor(st1, st2, 90)
        condenser(st2, st3)
        expansion_valve(st3, st4)
        evaporator(st4, st1)
end

PrintResults()

Output:

1- REFRIGERATION CYCLE [R134a]

State Name	T [K]	P [kPa]	h [kJ/kg]	s [kJ/kg.K]	x	Mass-flux fraction
st1	273.822	300.0	250.851	0.9311	1.0	1.0
st2	337.097	1500.0	288.025	0.9422		1.0
st3	328.383	1500.0	131.695	0.4665	0.0	1.0
st4	273.822	300.0	131.695	0.4959	0.3985	1.0

Cycle Properties:

	Total	Component	Value
qin Q̇in	119.1562 kJ/kg 0.0 kW	evaporator: st4 >> st1	119.1562 kJ/kg
qout Q̇out	156.3305 kJ/kg 0.0 kW	condenser: st2 >> st3	156.3305 kJ/kg
win Ẇin	37.1743 kJ/kg 0.0 kW	compressor: st1 >> st2	37.1743 kJ/kg
wout Ẇout	0.0 kJ/kg 0.0 kW

Refrigeration cycle

Output:

1- REFRIGERATION CYCLE [R134a]

Cycle Properties:

Coefficient of performance (COP) = 3.2053