Outside Problem #4 (15 points) A house has a composite wall of wood, Glassfiber blanket fiberglass insulation, and plast

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Outside Problem 4 15 Points A House Has A Composite Wall Of Wood Glassfiber Blanket Fiberglass Insulation And Plast 1 (27.7 KiB) Viewed 32 times

Outside Problem #4 (15 points) A house has a composite wall of wood, Glassfiber blanket fiberglass insulation, and plaster board (28 km as shown in the sketch. On a cold Plasterboard, Plywood siding, winter day (outside temperature of 15°C), the convection heat transfer Inside coefficients are h. - 60 W/mK and hi 20°C -150 - 30 W/mK. The total wall surface area is 350 m². The temperature inside the house is 20°C (a) Sketch the thermal circuit 10 m -20 mm (b) Find the total heat loss through the wall (c) If the wind blows violently, raising h, to 300 W/mK, find the percentage increase in the heat loss, (d) Which component of the thermal resistance is most important in determining the amount of heat flow through the wall? Which are negligible (less than 1% of the total)? 100 mm