An oak board (k = 0.2 W/mK) 1m x 1m and 0.625 cm thick floats in a pool of water and is exposed to the sun. The convective heat transfer coefficients between the upper surface of wood and air and between the lower surface of wood and water are 10 W/m2K and 450 W/m2K, respectively. The air temperature is 25 C, and the water temperature is 10 C. The absorbance on the upper surface of the wood is 0.85 and the radiation emitted by the sun is 500 W/m2. Neglecting the radiation from the wood to the surroundings, determine the heat received by the air and that received by the water in a stable state.
An oak board (k = 0.2 W/mK) 1m x 1m and 0.625 cm thick floats in a pool of water and is exposed to the sun. The convective heat transfer coefficients between the upper surface of wood and air and between the lower surface of wood and water are 10 W/m2K and 450 W/m2K, respectively. The air temperature is 25 C, and the water temperature is 10 C. The absorbance on the upper surface of the wood is 0.85 and the radiation emitted by the sun is 500 W/m2. Neglecting the radiation from the wood to the surroundings, determine the heat received by the air and that received by the water in a stable state.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:An oak board (k = 0.2 W/mK) 1 m x 1 m and 0.625 cm thick floats in a pool of water and is exposed
to the sun. The convective heat transfer coefficients between the upper surface of wood and air and
between the lower surface of wood and water are 10 W/m2K and 450 W/m2K, respectively. The air
temperature is 25 C, and the water temperature is 10 C. The absorbance on the upper surface of the
wood is 0.85 and the radiation emitted by the sun is 500 W/m2. Neglecting the radiation from the
wood to the surroundings, determine the heat received by the air and that received by the water in
a stable state.
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