Problem 11.032 - Second law analysis of ideal vapor refrigeration compression cycle NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A refrigerator operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working flui refrigerant evaporates at –10°C and condenses at 57.9°C. The refrigerant absorbs heat from a space at 5°C and re heat to ambient air at 25°C. (Take the required values from saturated refrigerant-134a tables.) Problem 11.032.a - Finding COP and cooling load Determine the cooling load, in kJ/kg, and the COP. (You must provide an answer before moving on to the next part.) The cooling load is 108.58 kJ/kg, and the COP is 3.253 NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A refrigerator operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant evaporates at –10°C and condenses at 57.9°C. The refrigerant absorbs heat from a space at 5°C and rejects heat to ambient air at 25°C. (Take the required values from saturated refrigerant-134a tables.) Problem 11.032.b - Exergy destruction Determine the exergy destruction in each component of the cycle and the total exergy destruction in the cycle. (You must provide an answer before moving on to the next part.) The exergy destruction in the compressor is 15.31 kJ/kg, the exergy destruction in the condenser is 13.73 kJ/kg, the exergy destruction in the expansion valve is 6.53 kJ/kg, and the exergy destruction in the evaporator is 0 O KJ/kg. The total exergy destruction in the cycle is 35.57| kJ/kg. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A refrigerator operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant evaporates at –10°C and condenses at 57.9°C. The refrigerant absorbs heat from a space at 5°C and rejects heat to ambient air at 25°C. (Take the required values from saturated refrigerant-134a tables.) Problem 11.032.c - Second law efficiency of components Determine the second-law efficiency of the compressor, the evaporator, and the cycle. The second-law efficiency of the compressor is 80 %, the evaporator is 80 %, and the cycle is 80 %.

Problem 11.032 - Second law analysis of ideal vapor refrigeration compression cycle NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A refrigerator operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working flui refrigerant evaporates at –10°C and condenses at 57.9°C. The refrigerant absorbs heat from a space at 5°C and re heat to ambient air at 25°C. (Take the required values from saturated refrigerant-134a tables.) Problem 11.032.a - Finding COP and cooling load Determine the cooling load, in kJ/kg, and the COP. (You must provide an answer before moving on to the next part.) The cooling load is 108.58 kJ/kg, and the COP is 3.253 NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A refrigerator operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant evaporates at –10°C and condenses at 57.9°C. The refrigerant absorbs heat from a space at 5°C and rejects heat to ambient air at 25°C. (Take the required values from saturated refrigerant-134a tables.) Problem 11.032.b - Exergy destruction Determine the exergy destruction in each component of the cycle and the total exergy destruction in the cycle. (You must provide an answer before moving on to the next part.) The exergy destruction in the compressor is 15.31 kJ/kg, the exergy destruction in the condenser is 13.73 kJ/kg, the exergy destruction in the expansion valve is 6.53 kJ/kg, and the exergy destruction in the evaporator is 0 O KJ/kg. The total exergy destruction in the cycle is 35.57| kJ/kg. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A refrigerator operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant evaporates at –10°C and condenses at 57.9°C. The refrigerant absorbs heat from a space at 5°C and rejects heat to ambient air at 25°C. (Take the required values from saturated refrigerant-134a tables.) Problem 11.032.c - Second law efficiency of components Determine the second-law efficiency of the compressor, the evaporator, and the cycle. The second-law efficiency of the compressor is 80 %, the evaporator is 80 %, and the cycle is 80 %.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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