Engineering, 30.08.2019 16:10 welcome00

Acomposite wall consists of 20 mm thick steel plate backed by insulation brick (k = 0.39 w/mk) of 50 cm thickness and overlaid by mineral wool of 20 cm thickness (k = 0.05 w/mk) and 70 cm layer of brick of (k = 0.39 w/mk). the inside is exposed to convection at 650°c with h = 65 w/ m2k. the outside is exposed to air at 35°c with a convection coefficient of 15 w/m2k. determine the heat loss per unit area, interface temperatures and temperature gradients in each materials.

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Acomposite wall consists of 20 mm thick steel plate backed by insulation brick (k = 0.39 w/mk) of 50...