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Refrigerant-134a is compressed by an adiabatic compressor from the saturated vapor state at 0.12 MPa to...
1 MPa Isentropic Efficiency of a Compressor Refrigerant-134a enters an adiabatic compressor as a saturated vapor...
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)...
6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of...
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.
Problem #2 Refrigerant 134a enters an adiabatic compressor at 0.1 MPa and -20 oC while it...
Problem #2 Refrigerant 134a enters an adiabatic compressor at 0.1 MPa and -20 oC while it leaves at 1 MPa and 110 oC. The mass flow rate of the compressor is 0.3 kg/s. Determine: a) The power input to the compressor, in kW. b) The volume flow rate of the refrigerant at the compressor inlet.
1. Refrigerant 134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and...
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...
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid....
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at -10°C, and saturated liquid leaves the condenser at 28°C. The mass flow rate of refrigerant is 5 kg/min. Determine (a) The compressor power, in kW (b) The refrigerating capacity, in tons. (c) The coefficient of performance. Sketch the system on a T-s diagram with full label. A vapor-compression heat pump with a heating capacity of 500 kJ/min is...
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor...
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 enters the compressor of a refrigerator as superheated vapor at 0.14 MPa and -10°C at a rate of 0.124...
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...
6-17 Refrigerant-134a enters the compressor of a refrig- cration system as saturated vapor at 0.14 MPa...
6-17 Refrigerant-134a enters the compressor of a refrig- cration system as saturated vapor at 0.14 MPa and leaves as superheated vapor at 0.8 MPa and 60°C at a rate of 0.06 kg/s. Determine the rates of energy transfers by mass into and out of the compressor. Assume the kinetic and potential cncrgics to be negligible.
A vapor compression refrigeration cycle utilizes R-134a as the working fluid. The refrigerant flow rate is 50 g/s. Vapor at 150 kPa and -10 0C enters the compressor and leaves at 1.2 MPa and 75 0C. Th...
A vapor compression refrigeration cycle utilizes R-134a as the working fluid. The refrigerant flow rate is 50 g/s. Vapor at 150 kPa and -10 0C enters the compressor and leaves at 1.2 MPa and 75 0C. The power input to the non-adiabatic compressor is measured and found to be 2.4 kW. The refrigerant enters the expansion valve at 1.15 MPa and 40 0C and leaves the evaporator at 160 kPa and -15 0C. Determine the entropy generation in the compression...
4. Refrigerant- 134a enters an adiahaticpressor as saturated vapor at 240°C and leaves at 09 MIPa...
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
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)...
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.
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...
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at -10°C, and saturated liquid leaves the condenser at 28°C. The mass flow rate of refrigerant is 5 kg/min. Determine (a) The compressor power, in kW (b) The refrigerating capacity, in tons. (c) The coefficient of performance. Sketch the system on a T-s diagram with full label. A vapor-compression heat pump with a heating capacity of 500 kJ/min is...
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 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...
6-17 Refrigerant-134a enters the compressor of a refrig- cration system as saturated vapor at 0.14 MPa and leaves as superheated vapor at 0.8 MPa and 60°C at a rate of 0.06 kg/s. Determine the rates of energy transfers by mass into and out of the compressor. Assume the kinetic and potential cncrgics to be negligible.
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
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