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Engineering, 24.09.2020 18:01 joelxl101

A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the sketch. On a cold winter day, the convection heat transfer coefficients are 60 W/m2·K and 20 W/m2·K. The total wall surface area is 200 m2. The plaster board thickness is 10 mm, the glass fiber thickness is 100 mm, and the plywood siding thickness is 20 mm. The temperature inside is 20°C and the temperature outside is -15°C . Determine the total heat loss through the wall.

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