06 (Variable Area, Radial Conduction)

Q w js heat rate per unit length thermal energy

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Unformatted text preview: 0 W/(m2K). The contact resistance between the cylinder surfaces and the heater is negligible. Determine the electrical power per unit length of the cylinder (W/m) to maintain the outer surface of the cylinder B at 5 C. (T∞=-15°C, h1=50 W/(m2 K)), (ka=.15 W/(m K), Ra =20mm), (kb= 1.5 W/(m K), Rb =40mm), To= 5°C Find: q’ for the heater to maintain TO= 5°C Assume: Given: Analyze:...
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This document was uploaded on 01/15/2014.

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