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The composite wall of a building consists of a 100 mm layer of common brick, a...

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Mechanical Engineering

The composite wall of a building consists of a 100 mm layer ofcommon brick, a 100 mm layer of glass fibre (organic bonded), a 10mm layer of gypsum plaster (perlite aggregate) and a 6 mm of pinepanel. If the inside convection coefficient is 10 W/m2 .K and theoutside convection coefficient is 70 W/m2 .K, calculate: (i) thetotal thermal resistance of the wall; (ii) the overall heattransfer coefficient of the wall.

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