The refrigeration system of a large commercial complex operates in a multi-pressure system in which a single compressor supports two evaporators. The low temperature evaporator is at -40C and has a capacity of 250kW while the high temperature evaporator is at 5C and has a capacity of 200kW. Condenser is at 35C and the superheated ammonia leaves the compressor with an enthalpy of 1750kJ/kg. Calculate the amount of cooling water needed by the condenser in kg/s for a temperature rise of 15C. a. 7.1 b. 8.2 c. 9.3 d. 10.4

The refrigeration system of a large commercial complex operates in a multi-pressure system in which a single compressor supports two evaporators. The low temperature evaporator is at -40C and has a capacity of 250kW while the high temperature evaporator is at 5C and has a capacity of 200kW. Condenser is at 35C and the superheated ammonia leaves the compressor with an enthalpy of 1750kJ/kg. Calculate the amount of cooling water needed by the condenser in kg/s for a temperature rise of 15C. a. 7.1 b. 8.2 c. 9.3 d. 10.4

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

Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems

Section: Chapter Questions

Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....

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