6.7 A refrigerated room, used for product cooling, is being maintained at the desired temperature using an evaporator temperature of 0°C and condenser pressure of 900 kPa with an R-134a vapor-compression refrigeration system. The condenser is a countercurrent tubular heat exchanger with water entering at 25°C and leaving at 35°C. Evaluate the following for a refrigeration load of 5 tons: a. The rate of heat exchange at the condenser b. The compressor power requirement at 80% efficiency c. The coefficient of performance for the system d. The heat transfer surface area in the condenser when the overall heat transfer coefficient is 500 W/m2 °C e. The flow rate of water through the condenser

6.7 A refrigerated room, used for product cooling, is being maintained at the desired temperature using an evaporator temperature of 0°C and condenser pressure of 900 kPa with an R-134a vapor-compression refrigeration system. The condenser is a countercurrent tubular heat exchanger with water entering at 25°C and leaving at 35°C. Evaluate the following for a refrigeration load of 5 tons: a. The rate of heat exchange at the condenser b. The compressor power requirement at 80% efficiency c. The coefficient of performance for the system d. The heat transfer surface area in the condenser when the overall heat transfer coefficient is 500 W/m2 °C e. The flow rate of water through the condenser

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.17P

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