Question

6 m 15 m 10 m 18 cm fiberglass 3.2 cm wood 3.2 cm wood (a) (b) A warehouse in North Dakota is built with the overall dimensions shown in figure (a) above. The temperature inside the warehouse is maintained at 20° C and the outside temperature is 0° C. The walls and ceiling of the building are composed of three layers of material, as shown in figure (b) above, such that the inside material is 3.2 cm of wood, then 18 cm of fiberglass, and finally 3.2 cm of wood again. Calculate the total heat loss per day using a thermal conductivity of wood ( k = 0.16 W/m K ) and that of fiberglass ( k = 0.043 W/m K ). Note: Ignore heat loss through the floor. For simplicity, assume windows and door have same heat loss as concrete.

          6 m
15 m
10 m
18 cm fiberglass
3.2 cm wood
3.2 cm wood
(a)
(b)
A warehouse in North Dakota is built with the overall dimensions shown in figure (a) above. The temperature inside the warehouse is maintained at 20° C and the outside temperature is 0° C. The walls and ceiling of the building are composed of three layers of material, as shown in figure (b) above, such that the inside material is 3.2 cm of wood, then 18 cm of fiberglass, and finally 3.2 cm of wood again.
Calculate the total heat loss per day using a thermal conductivity of wood ( k = 0.16 W/m K ) and that of fiberglass ( k = 0.043 W/m K ).
Note: Ignore heat loss through the floor. For simplicity, assume windows and door have same heat loss as concrete.

6 m
15 m
10 m
18 cm fiberglass
3.2 cm wood
3.2 cm wood
(a)
(b)
A warehouse in North Dakota is built with the overall dimensions shown in figure (a) above. The temperature inside the warehouse is maintained at 20° C and the outside temperature is 0° C. The walls and ceiling of the building are composed of three layers of material, as shown in figure (b) above, such that the inside material is 3.2 cm of wood, then 18 cm of fiberglass, and finally 3.2 cm of wood again.
Calculate the total heat loss per day using a thermal conductivity of wood ( k = 0.16 W/m K ) and that of fiberglass ( k = 0.043 W/m K ).
Note: Ignore heat loss through the floor. For simplicity, assume windows and door have same heat loss as concrete.

Added by Kurt J.

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