An electric kitchen range has a total wall area of 1.40 m2and is insulated with a layer of fiberglass 4.00 cm thick. The insidesurface of the fiberglass has a temperature of 175°C, and its outsidesurface is at 35.0°C. The fiberglass has a thermal conductivity of0.040 W /m . K. (a) What is the heat current through the insulation,assuming it may be treated as a flat slab with an area of 1.40 m2?(b) What electric-power input to the heating element is required tomaintain this temperature?
An electric kitchen range has a total wall area of 1.40 m2and is insulated with a layer of fiberglass 4.00 cm thick. The insidesurface of the fiberglass has a temperature of 175°C, and its outsidesurface is at 35.0°C. The fiberglass has a thermal conductivity of0.040 W /m . K. (a) What is the heat current through the insulation,assuming it may be treated as a flat slab with an area of 1.40 m2?(b) What electric-power input to the heating element is required tomaintain this temperature?
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An electric kitchen range has a total wall area of 1.40 m2
and is insulated with a layer of fiberglass 4.00 cm thick. The inside
surface of the fiberglass has a temperature of 175°C, and its outside
surface is at 35.0°C. The fiberglass has a thermal conductivity of
0.040 W /m . K. (a) What is the heat current through the insulation,
assuming it may be treated as a flat slab with an area of 1.40 m2?
(b) What electric-power input to the heating element is required to
maintain this temperature?
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