Estimates COP, compressor power, condenser duty, cycle pressures and refrigerant circulation rate for single-stage and multi-stage cascade vapor-compression systems.
System COP
–
Total Power
–
Duty & Refrigerant
0.75
Typical 0.65–0.80 reciprocating/screw, 0.75–0.85 centrifugal. Work, discharge enthalpy and COP follow from this and the Peng-Robinson state points.
Absorption Chiller
Cascade Configuration
Interstage Optimization
Interstage pressure is the low-stage condensing pressure at each cascade heat exchanger; the upper stage evaporates ΔT below it. Edit the pressure in each lower stage, or let the optimizer search.
Process Gas & Liquefaction Conditions
Atmospheric by default. CO₂ needs >518 kPa to liquefy (else it desublimes/frosts below its triple point).