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maximum COP of the machine b. The minimum power in watts required of the machine

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 8.12P: 8.12 An electric room heater has been designed in the shape of a vertical cylinder 2 m tall and 30...

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A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

Icecream container is to be keep in an existing state at -233.15 K in a hot weather where the temperature is 299.817 K . A machine removes heat from the ice cream container at a rate of 70 BTU/min and throw it to
the environment.

find
a. maximum COP of the machine
b. The minimum power in watts required of the machine

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