6-17 Refrigerant-134a enters the compressor of a refrig- cration system as saturated vapor at 0.14 MPa...
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 MPa and -10°C at a rate of 0.124 kg/s, and it leaves at 0.7 MPa and 50°C. The refrigerant is cooled in the condenser to 24°C and 0.65 MPa, and it is throttled to 0.15 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor...
1 MPa Isentropic Efficiency of a Compressor Refrigerant-134a enters an adiabatic compressor as a saturated vapor at 100kPa at a rate of 0.7 m/min and exits at 1-MPa pressure. The isentropic efficiency of the compressor is 87%. R-134a Compressor Isentropic Compressor Work hs-h 100 kPa sat. vapor Actual Compressor Work Determine the refrigerant properties at the inlet and outlet for an isentropic process. Actual 2s entropic procEss Inlet state Determine the actual isentropic enthalpy from the efficiency. (Ans: 289.71 J/kg)...
Refrigerant 134a is the working fluid in an ideal vapor-compression
refrigeration cycle. Saturated vapor enters the compressor at h =
400 J/kg and saturated liquid leaves the condenser at h= 242 J/kg.
If the mass flow rate of the refrigerant is 0.08 kg/s, and
superheated vapor exits the compressor at h = 420 J/kg, pression
work will be equal to 1.6 kW
inch-h) 6.08(420 - 6oo) = 1.6
1. Refrigerant 134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and -10 °C at a rate of 0.07 kg/s, and it leaves at 1.2 MPa and 70 °C. The refrigerant is cooled in the condenser to 44 °C and 1.130 MPa and it is throttled to 0.20 MPa. Disregarding heat transfer and pressure drop in the connecting lines between the components, show the cycle on a T-s diagram with respect to the saturation line. Determine...
4. Refrigerant- 134a enters an adiahaticpressor as saturated vapor at 240°C and leaves at 09 MIPa and 60°C. The mass flow rate of the refrigerant is 1.2 kg/s. Determine (a) the power input to the compressor and (b) the volume flow rate of the refrigerant at the compressor inlet
2. Saturated vapor of refrigerant 134a enters a well-insulated compressor at 140 kPa and leaves at 800 kPa and 50°C at a flowrate of 0.04 kg/s. Estimate the work done by the compressor.
6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of 0.7 m3/min and exits at 1 MPa pressure. If the isentropic efficiency of the compressor is 87%, determine (a) the temperature of the refrigerant at the exit of the compressor, (b) the power input (in kW), and (c) the rate of entropy generation during this process.
Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity of 10 m/s. The refrigerant enters the compressor as a saturated vapor at 10°C and leaves the compressor at 1400 kPa with an enthalpy of 281.39 kJ/kg with a negligible velocity. The rate of work done on the refrigerant is measured to be 380 kW. If the elevation change between the compressor inlet and exit is negligible, determine the rate of heat transfer associated...
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°C with a volumetric flow rate of 0.18 m3/s. Refrigerant exits at 9 bar, 70°C. Changes in kinetic and potential energy from inlet to exit can be ignored. Determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kW.
Refrigerant-134a is compressed by an adiabatic compressor from the saturated vapor state at 0.12 MPa to 1.2 MPa and 70 C at a rate of 0.108 kg/s. The power input to the compressor is 6.85 kW 59.4 kW 6.42 kW 63.4 kW 587 kW