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Question 4: A vapor compression refrigeration unit in a dairy operates between 60 kPa and 900...
A standard vapour compression refrigeration cycle operates between pressures of 220 kPa and 1000 ...
A standard vapour compression refrigeration cycle operates
between pressures of 220 kPa and 1000 kPa, with a compressor having
an isentropic efficiency of 92.0%. It has a mass flow rate of
0.71kg/s. Evaluate the enthalpy for each of the states in the
cycle: Property State 1 2a 3 4 h kJ/kg Calculate the actual power
consumed by the compressor: W˙compressor= kW Calculate the CoP of
the cycle: CoP=
A standard vapour compression refrigeration cycle operates between pressures of 220 kPa...
A 100-ton refrigeration system operates on the simple vapor compression refrigeration system with R-22 as the...
A 100-ton refrigeration system operates on the simple vapor compression refrigeration system with R-22 as the working fluid. The evaporator pressure is 2 bar and the condenser pressure is 30 bar. The refrigerant leaves the compressor at 160oC. 1 ton of refrigeration = 3.517 kW Determine the cooling load, in kW. Plot all five points (1, 2s, 2a, 3, 4) on the P-h diagram. Determine the power consumed by the refrigeration system, in kW. Determine the COP of the system. Isentropic efficiency...
Please also draw the T-S diagrams and PH diagrams to facilitate understanding. Thank you. 5. The refrigeration system s...
Please also draw the T-S diagrams and PH diagrams to facilitate
understanding. Thank you.
5. The refrigeration system shown below is another variation of the basic vapor compression refrigeration system which attempts to reduce the compression work. In this system, a heat exchanger is used to superheat the vapor entering the compressor while sub-cooling the liquid exiting from the condenser Consider a system of this type that uses refrigerant-134a as its refrigerant and operates the evaporator at -10°C, and the...
Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigerat...
Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigeration cycle with R-134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. Show the cycle on a T-s diagram with respect to saturation lines and determine (a) the quality of the refrigerant at the end of the throttling process, (b) coefficient of performance, (c) the power input to the compressor , (d) Generation of entropy...
A two-stage compression refrigeration system with an adiabatic liquid-vapor separation unit uses refrigerant-134a as working fluid....
A two-stage compression refrigeration system with an adiabatic liquid-vapor separation unit uses refrigerant-134a as working fluid. The system operates the evaporator at 0.4 MPa, the condenser at 1.6 MPa, and the separator at 0.8 MPa. The compressors use 25 kW of power. Given that the refrigerant is saturated liquid at the inlet of each expansion valve and saturated vapor at the inlet of each compressor, and the compressors are isentropic: (0) show the process on a T-s diagram; ) calculate...
A freezer is designed, based on vapor-compression refrigeration cycle. The designed conditions are: R-134a as refrigerant,...
A freezer is designed, based on vapor-compression refrigeration cycle. The designed conditions are: R-134a as refrigerant, with a cooling capacity of 500 kW; compressor of 70% efficiency, with a superheat of 10°C before compressor inlet; operation temperature of -10°C inside the refrigerator, with the environment temperature of 25°C outside the refrigerator; Determine the pressure range of refrigeration cycle if a 10°C difference is required to ensure effective heat transfer of evaporator and condenser; Plot the refrigeration cycle on P-h diagram;...
A two-stage compression refrigeration system with an adiabatic liquid-vapor separation unit uses refrigerant-134a as working fluid....
A two-stage compression refrigeration system with an adiabatic liquid-vapor separation unit uses refrigerant-134a as working fluid. the system operates the evaporator at 0.4Mpa, the condenser at 1.6Mpa and the separator at 0.8 Mpa. The compressors use 25kW of power. Given that the refrigerant is saturated liquid at the inlet of each compressor, and the compressors are isentropic: i) show the process on a T-s diagram, ii) calculate the rate of cooling provided by the evaporator, the COP of the heat...
A refrigeration unit operates between pressure of 244.83 kPa and 1043.9 kPa, and uses refrigerant-22. The...
A refrigeration unit operates between pressure of 244.83 kPa and 1043.9 kPa, and uses refrigerant-22. The saturated vapour R-22 enters the compressor at -20 °C and leaves the condenser at 25 oC as a saturated liquid. Assume isentropic compression and neglect all losses. Use the property tables and/or figures in the text book. Calculate the coefficient of performance; and
Click Submit to complete this assessment. Question 25 In a vapor compression cycle if the refrigeration...
Click Submit to complete this assessment. Question 25 In a vapor compression cycle if the refrigeration effect is 482 KJ/kg, while energy supplied to the compressor is 119 Kj/kg, the COP of the system is A Click Submit to complete this assessment. MacBook Pro esc & @ % 5 0 6 7 V 8 3 ۳ 2 4 E 1 Moving to another question will save this response. Question 12 15 points A deep freezer uses R134a as refrigerant and...
A standard vapour compression refrigeration cycle operates
between pressures of 220 kPa and 1000 kPa, with a compressor having
an isentropic efficiency of 92.0%. It has a mass flow rate of
0.71kg/s. Evaluate the enthalpy for each of the states in the
cycle: Property State 1 2a 3 4 h kJ/kg Calculate the actual power
consumed by the compressor: W˙compressor= kW Calculate the CoP of
the cycle: CoP=
A standard vapour compression refrigeration cycle operates between pressures of 220 kPa...
Please also draw the T-S diagrams and PH diagrams to facilitate
understanding. Thank you.
5. The refrigeration system shown below is another variation of the basic vapor compression refrigeration system which attempts to reduce the compression work. In this system, a heat exchanger is used to superheat the vapor entering the compressor while sub-cooling the liquid exiting from the condenser Consider a system of this type that uses refrigerant-134a as its refrigerant and operates the evaporator at -10°C, and the...
Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigeration cycle with R-134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. Show the cycle on a T-s diagram with respect to saturation lines and determine (a) the quality of the refrigerant at the end of the throttling process, (b) coefficient of performance, (c) the power input to the compressor , (d) Generation of entropy...
A two-stage compression refrigeration system with an adiabatic liquid-vapor separation unit uses refrigerant-134a as working fluid. The system operates the evaporator at 0.4 MPa, the condenser at 1.6 MPa, and the separator at 0.8 MPa. The compressors use 25 kW of power. Given that the refrigerant is saturated liquid at the inlet of each expansion valve and saturated vapor at the inlet of each compressor, and the compressors are isentropic: (0) show the process on a T-s diagram; ) calculate...
A refrigeration unit operates between pressure of 244.83 kPa and 1043.9 kPa, and uses refrigerant-22. The saturated vapour R-22 enters the compressor at -20 °C and leaves the condenser at 25 oC as a saturated liquid. Assume isentropic compression and neglect all losses. Use the property tables and/or figures in the text book. Calculate the coefficient of performance; and
Click Submit to complete this assessment. Question 25 In a vapor compression cycle if the refrigeration effect is 482 KJ/kg, while energy supplied to the compressor is 119 Kj/kg, the COP of the system is A Click Submit to complete this assessment. MacBook Pro esc & @ % 5 0 6 7 V 8 3 ۳ 2 4 E 1 Moving to another question will save this response. Question 12 15 points A deep freezer uses R134a as refrigerant and...
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