Q2) A Carnot refrigeration cycle absorbs heat at -12°C and rejects it at 40°C. (a) Calculate the coefficient of performance of this refrigeration cycle. (b) If the cycle is absorbing 15 kW at the -12°C temperature, how much power is required? (e) If a Camot heat pump operates between the same temperatures as the above refrigeration cycle, what is the performance factor? (d) What is the rate of heat rejection at the 40°C temperature if the heat pump absorbs 15 kW at the -12 C temperature? (Ans. (a) 5.02, (b) 3kW, (d) 18KW).
Q2) A Carnot refrigeration cycle absorbs heat at -12°C and rejects it at 40°C. (a) Calculate the coefficient of performance of this refrigeration cycle. (b) If the cycle is absorbing 15 kW at the -12°C temperature, how much power is required? (e) If a Camot heat pump operates between the same temperatures as the above refrigeration cycle, what is the performance factor? (d) What is the rate of heat rejection at the 40°C temperature if the heat pump absorbs 15 kW at the -12 C temperature? (Ans. (a) 5.02, (b) 3kW, (d) 18KW).
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.
Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.46P
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