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A composite wall of 1m2 surface area is constructed of two layers. The first layer is of 1cm thick steel (k=45W/mK) and the second layer

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A composite wall of 1m2 surface area is constructed of two layers. The first layer is of 1cm thick steel (k=45W/mK) and the second layer of 10cm thick fiberglass insulation (k=0.035W/mK). Determine: a) thermal resistance of the composite wall b) overall heat transfer coefficient

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