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The refrigerant in an evaporator goes through phase change at a constant temperature of −30◦C. The rate of vaporization of the refrigerant is 0.15 kg/s. The latent heat of vaporization of the refrigerant is 412.1 kJ/kg. Air enters the evaporator at mass flow rate 1.1 kg/s with a temperature of 45◦C. Assume air has a constant specific heat of 1007 J/kg·K. What is the effectiveness of this heat exchanger?

The refrigerant in an evaporator goes through phase change at a constant temperature of −30◦C. The rate of vaporization of the refrigerant is 0.15 kg/s. The latent heat of vaporization of the refrigerant is 412.1 kJ/kg. Air enters the evaporator at mass flow rate 1.1 kg/s with a temperature of 45◦C. Assume air has a constant specific heat of 1007 J/kg·K. What is the effectiveness of this heat exchanger?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The refrigerant in an evaporator goes through phase change at a constant temperature
of −30◦C. The rate of vaporization of the refrigerant is 0.15 kg/s. The latent heat of vaporization of
the refrigerant is 412.1 kJ/kg. Air enters the evaporator at mass flow rate 1.1 kg/s with a temperature
of 45◦C. Assume air has a constant specific heat of 1007 J/kg·K. What is the effectiveness of this heat
exchanger?

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