When a man returns to his well-sealed house on a summer day, he finds that the house is at 32°C.He turns on the air conditioner, which cools the entire house to 20°C in 15 min. If the COP of the air-conditioning system is 2.5, determine the power drawn by the air conditioner. Assume the entire mass within the house is equivalent to 800 kg of air for which Cv= 0.72 kJ/kg · °C and Cp=1.0 kJ/kg · °C.

When a man returns to his well-sealed house on a summer day, he finds that the house is at 32°C.He turns on the air conditioner, which cools the entire house to 20°C in 15 min. If the COP of the air-conditioning system is 2.5, determine the power drawn by the air conditioner. Assume the entire mass within the house is equivalent to 800 kg of air for which Cv= 0.72 kJ/kg · °C and Cp=1.0 kJ/kg · °C.

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

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...

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When a man returns to his well-sealed house on a summer day, he finds that the house is at 35°C. He turns on the air conditioner, which cools the entire house to 20°C in 30 min. If the COP of the air-conditioning system is 2.8, determine the power drawn by the air conditioner. Assume the entire mass within the house is equivalent to 800 kg of air for which cv = 0.72 kJ/kg·°C and cp = 1.0 kJ/kg·°C.
12- Enver Gezer sees that there is 32 ºC in the summer house and after operating the air conditioner, the temperature of the house becomes 20 ºC in 15 minutes. Calculate the electrical power drawn by the system since the air conditioning system has a COP of 2.5. The mass of the Air in the house is 800 kg. For air (CV: 0.72 kJ/kg ºC and Cp: 1.0 kJ/kg ºC) A-3,265 kWB-5,492 kWC-3,897 kWD-5,046 kWE-3,072 kW (Note: This question is Turkish) orginal question: 12- Enver Gezer yazın evinde 32 ºC olduğunu görmekte ve Klimayı çalıştırdıktan sonra evin sıcaklığı 15 dakika içerisinde 20 ºC olmaktadır. iklimlendirme sisteminin COP değeri 2.5 olduğuna göre sistemin çektiği elektrik gücünü hesaplayın . Evin içerisindeki Havanın kütlesi 800 kg dır. Hava için (CV :0.72 kJ/kg ºC ve Cp : 1.0 kJ/kg ºC )
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