a) A house walls that are 23 cm thick and have an average thermal conductivity two times that of cork. Assume there are no windows or doors. The walls' surface area is 800000 cm2 and their inside surface is at 22°C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.042 W/m°C) ) Calculate the rate of heat conduction through house walls? (ii) How many 400W room heaters would be needed to balance the heat transfer due to conduction? (approximate number)

a) A house walls that are 23 cm thick and have an average thermal conductivity two times that of cork. Assume there are no windows or doors. The walls' surface area is 800000 cm2 and their inside surface is at 22°C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.042 W/m°C) ) Calculate the rate of heat conduction through house walls? (ii) How many 400W room heaters would be needed to balance the heat transfer due to conduction? (approximate number)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter11: Energy In Thermal Processes

Section11.5: Energy Transfer

Problem 11.5QQ: Stars A and B have the same temperature, but star A has twice the radius of star B. (a) What is the...

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