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ME lain the modes of heat transfer with suitable examples. : A refrigerator has to transfer an average of 200 J of heat per second 4 form the temperature 15°C to 30°C. Calculate the average power…
15ME lain the modes of heat transfer with suitable examples. : A refrigerator has to transfer an average of 200 J of heat per second 4 form the temperature 15°C to 30°C. Calculate the average power consumed, assuming an ideal reversible cycle and no other losses. OR : A thin metal plate is insulted on the back and exposed its front surface to solar radiation. The exposed surface of the plate has an emissivity of 0.7. If the solar radiation is including on the lath at the rate of . 750 W/m? and the surrounding air temperature is 20°C, determine the surface temperature of the plate. Assume convection heat transfer coefficient 40 W/mK.
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