The following properties for Freon-12 were obtained. At -22 °C h (superheat) = 353 KJ/kg ha = 343 KJ/kg %3D At 44 °C h (superheat) = 300 KJ/kg h (subcooled) = 228 KJ/kg h = 238 KJ/kg %3D %3D Vapor Compression Refrigeration system with Heat Exchanger uses Freon-12. Liquid refrigerant leaves the condenser at 44 °C. The evaporator Temperature is -22°C. The internal heat exchanger temperature is 30°C. Compute for the cooling effect in KJ/kg.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
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Author:Kreith, Frank; Manglik, Raj M.
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Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.75P: Referring to Problem 1.74, how many kilograms of ice can a 3-ton refrigeration unit produce in a...
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The following properties for Freon-12 were obtained.
At -22 °C
h (superheat) = 353 KJ/kg
ha = 343 KJ/kg
%3D
At 44 °C
h (superheat) = 300 KJ/kg
h (subcooled) = 228 KJ/kg
h = 238 KJ/kg
%3D
%3D
Vapor Compression Refrigeration system with Heat Exchanger uses Freon-12. Liquid
refrigerant leaves the condenser at 44 °C. The evaporator Temperature is -22°C. The
internal heat exchanger temperature is 30°C.
Compute for the cooling effect in KJ/kg.
Transcribed Image Text:The following properties for Freon-12 were obtained. At -22 °C h (superheat) = 353 KJ/kg ha = 343 KJ/kg %3D At 44 °C h (superheat) = 300 KJ/kg h (subcooled) = 228 KJ/kg h = 238 KJ/kg %3D %3D Vapor Compression Refrigeration system with Heat Exchanger uses Freon-12. Liquid refrigerant leaves the condenser at 44 °C. The evaporator Temperature is -22°C. The internal heat exchanger temperature is 30°C. Compute for the cooling effect in KJ/kg.
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