A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at −25°C by rejecting waste heat to cooling water that enters the condenser at 20°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the COP, and (d) the minimum power input to the compressor for the same refrigeration load.
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A commercial refrigerator with refrigerant-134a as the working
fluid is used to keep the refrigerated space...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at by The refrigerant enters the condenser at compressor consumes 3.3 kW of power, dete...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at by The refrigerant enters the condenser at compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (e) the COP, and (d) the g waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. 1.2 MPa and 50°C and leaves at the same...
1) A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated...
1) A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 16 °C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of...
Problem #4 (20 points) A commercial refrigerator with refrigerant-134a as the working fluid is used to...
Problem #4 (20 points) A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and-34°Cand the compressor is estimated to gain a net heat of...
5. A commercial refrigerator uses 134a refrigerant to keep the space refrigerated at −30 ° C...
5. A commercial refrigerator uses 134a refrigerant to keep the space refrigerated at −30 ° C by rejecting its waste heat into cooling water entering the condenser at 101,325 kPa, at the rate of 0.25 kg / s. The refrigerant is fed to the compressor at -25 ° C and 100 kPa. Use a software and determine the quality of the refrigerant at the inlet of the evaporator and the COP of the refrigerator using the conditions shown in the...
(12 points) A refrigerator using refrigerant-134a as the working fluid operates on the vapor compression cycle....
(12 points) A refrigerator using refrigerant-134a as the working fluid operates on the vapor compression cycle. The cycle operates between 200 kPa and 1.2 MPa. The refrigerant flows through the cycle at a rate of 0.019 kg/s. The (actual) refrigerator has a compressor with an isentropic efficiency of 85%. The refrigerant enters the compressor slightly superheated by 56 C hint add this to the saturation temperature). The refrigerant leaves the condenser slightly subcooled by 1.9°C. What is the rate of...
Tt (12 points) A refrigerator using refrigerant-134a as the working fluid operates on the vapor compression...
Tt
(12 points) A refrigerator using refrigerant-134a as the working fluid operates on the vapor compression cycle. The cycle operates between 200 kPa and 1.2 MPa. The refrigerant flows through the cycle at a rate of 0.015 kg/s. The actual) refrigerator has a compressor with an isentropic efficiency of 82%. The refrigerant enters the compressor slightly superheated by 6.2°C (hint: add this to the saturation temperature). The refrigerant leaves the condenser slightly subcooled by 1.8°C. What is the rate of...
QUESTION 1 A heat pump with refrigerant-134a as the working fluid is used to keep a...
QUESTION 1 A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water that enters the evaporator at 50°C at a rate of 0.065 kg/s and leaves at 40°C. The refrigerant enters the evaporator at 20°C with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. The refrigerant loses 300 W of heat to the surroundings as it flows through the compressor and...
A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by |absorbing heat from geotherm...
A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by |absorbing heat from geothermal water that enters the evaporator at 50°C at a rate of 0.046 kg/s and leaves at 40°C. The refrigerant enters the evaporator at 20°C with a quality 23 percent and leaves at the inlet pressure as saturated vapor. The refrigerant loses305 W o heat to the surroundings as it flows through the compressor and the refrigerant leaves the...
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...
refrigerator, as shown in FIGURE P 3 with the corresponding T-s diagram, uses refrigerant R-134a as...
refrigerator, as shown in FIGURE P 3 with the corresponding T-s diagram, uses refrigerant R-134a as the working fluid and operates on the ideal vapour-compression refrigeration cycle except for the compression process. The refrigerant enters the evaporator at 120 kPa with a quality of 34.026 percent and leaves the compressor at 70 0C. If the compressor consumes 0.45 kW of power, Determine: (a) The mass flow rate of the refrigerant, in kg/s, correct to 6 dp. (b) The condenser pressure,...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at by The refrigerant enters the condenser at compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (e) the COP, and (d) the g waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. 1.2 MPa and 50°C and leaves at the same...
1) A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 16 °C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of...
Problem #4 (20 points) A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and-34°Cand the compressor is estimated to gain a net heat of...
5. A commercial refrigerator uses 134a refrigerant to keep the space refrigerated at −30 ° C by rejecting its waste heat into cooling water entering the condenser at 101,325 kPa, at the rate of 0.25 kg / s. The refrigerant is fed to the compressor at -25 ° C and 100 kPa. Use a software and determine the quality of the refrigerant at the inlet of the evaporator and the COP of the refrigerator using the conditions shown in the...
(12 points) A refrigerator using refrigerant-134a as the working fluid operates on the vapor compression cycle. The cycle operates between 200 kPa and 1.2 MPa. The refrigerant flows through the cycle at a rate of 0.019 kg/s. The (actual) refrigerator has a compressor with an isentropic efficiency of 85%. The refrigerant enters the compressor slightly superheated by 56 C hint add this to the saturation temperature). The refrigerant leaves the condenser slightly subcooled by 1.9°C. What is the rate of...
Tt
(12 points) A refrigerator using refrigerant-134a as the working fluid operates on the vapor compression cycle. The cycle operates between 200 kPa and 1.2 MPa. The refrigerant flows through the cycle at a rate of 0.015 kg/s. The actual) refrigerator has a compressor with an isentropic efficiency of 82%. The refrigerant enters the compressor slightly superheated by 6.2°C (hint: add this to the saturation temperature). The refrigerant leaves the condenser slightly subcooled by 1.8°C. What is the rate of...
QUESTION 1 A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water that enters the evaporator at 50°C at a rate of 0.065 kg/s and leaves at 40°C. The refrigerant enters the evaporator at 20°C with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. The refrigerant loses 300 W of heat to the surroundings as it flows through the compressor and...
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...
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