An electric kitchen range has a total wall area of 1.40 m2 and is insulated with a

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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 of0.040W/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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Principles of heat transfer

ISBN: 978-0495667704

7th Edition

Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn

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