Consider a two-stage compression refrigeration system shown below. The working fluid is refrigerant- 134a. The refrigerant...
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Consider a two-stage compression refrigeration system shown below. The working fluid is refrigerant- 134a. The refrigerant leaves the condenser as a saturated liquid and is throttled to a flash chamber. Part of the refrigerant evaporates during this flashing process, and this vapor is mixed with the refrigerant leaving the low-pressure compressor. The mixture is then compressed to the condenser pressure by the high-pressure compressor. The liquid in the flash chamber is throttled to the evaporator pressure and cools the refrigerated space as it vaporizes in the evaporator. Assuming the refrigerant leaves the evaporator as a saturated vapor and both compressors are isentropic, and the amount of heat removed from the refrigerated space is 35 kW, determine: State Enthalpy (kj/kg] x 229.14 Wam 260.62 Cindenser 281.69 Fapansin Igh-pressan Comeroor 115.76 6. 115.76 0.2825 62 8. 62 Flah chunber 9. 252.32 Expamion Low-prus 1. (14%) Enthalpy at state 3. 2. (14%) The amount of heat supplied to the warm environment per unit mass of refrigerant flowing through the condenser 3. (14%) The compressor work per unit mass of refrigerant flowing through the condenser, 4. (14%) the coefficient of performance. (15%) the mass flow rate of the refrigerant entering the low-pressure compressor 6. (15%) the mass flow rate of the refrigerant entering the high-pressure compressor 7 (14%) Plot the T-i diagram of the cycle 2345 Consider a two-stage compression refrigeration system shown below. The working fluid is refrigerant- 134a. The refrigerant leaves the condenser as a saturated liquid and is throttled to a flash chamber. Part of the refrigerant evaporates during this flashing process, and this vapor is mixed with the refrigerant leaving the low-pressure compressor. The mixture is then compressed to the condenser pressure by the high-pressure compressor. The liquid in the flash chamber is throttled to the evaporator pressure and cools the refrigerated space as it vaporizes in the evaporator. Assuming the refrigerant leaves the evaporator as a saturated vapor and both compressors are isentropic, and the amount of heat removed from the refrigerated space is 35 kW, determine: State Enthalpy (kj/kg] x 229.14 Wam 260.62 Cindenser 281.69 Fapansin Igh-pressan Comeroor 115.76 6. 115.76 0.2825 62 8. 62 Flah chunber 9. 252.32 Expamion Low-prus 1. (14%) Enthalpy at state 3. 2. (14%) The amount of heat supplied to the warm environment per unit mass of refrigerant flowing through the condenser 3. (14%) The compressor work per unit mass of refrigerant flowing through the condenser, 4. (14%) the coefficient of performance. (15%) the mass flow rate of the refrigerant entering the low-pressure compressor 6. (15%) the mass flow rate of the refrigerant entering the high-pressure compressor 7 (14%) Plot the T-i diagram of the cycle 2345
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Related Book For
Thermodynamics for Engineers
ISBN: ?978-1133112860
1st edition
Authors: Kenneth A. Kroos, Merle C. Potter
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