PROBLEM 2 A household refrigerator has a coefficient of performance of 3 and requires a net power input of 0.8 kW. Question: (a) Determine the rate of heat transfer removed from the refrigerated space. (b) Determine the rate of heat transfer discharged from the refrigerator to the surrounding kitchen. (c) Determine the annual cost in $ for supplying power to the refrigerator assuming 24/7 operation and a cost of 12 cents per kWh.

PROBLEM 2 A household refrigerator has a coefficient of performance of 3 and requires a net power input of 0.8 kW. Question: (a) Determine the rate of heat transfer removed from the refrigerated space. (b) Determine the rate of heat transfer discharged from the refrigerator to the surrounding kitchen. (c) Determine the annual cost in $ for supplying power to the refrigerator assuming 24/7 operation and a cost of 12 cents per kWh.

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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PROBLEM 2
A household refrigerator has a coefficient of performance of 3 and requires a net power
input of 0.8 kW.

Question:
(a) Determine the rate of heat transfer removed from the refrigerated space.
(b) Determine the rate of heat transfer discharged from the refrigerator to the
surrounding kitchen.
(c) Determine the annual cost in $ for supplying power to the refrigerator assuming
24/7 operation and a cost of 12 cents per kWh.

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