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Unformatted text preview: 2 = 125 mm. The end temperatures are T 1 = 600 K and T 2 = 400 K, while the lateral surface is well insulated. 1.Derive an expression for the temperature distribution T(x) in symbolic form, assuming onedimensional conditions. Sketch the temperature distribution. 2.Calculate the heat rate q x . ChEn 323 – Chapter 3 Problems  Slide 4 Problem 3.29 (continued) ChEn 323 – Chapter 3 Problems  Slide 5 Problem 3.141 Determine the percentage increase in heat transfer associated with attaching aluminum fins of rectangular profile to a plane wall. The fins are 50 mm long, 0.5 mm thick, and are equally spaced at a distance of 4 mm (250 fins/m). The convection coefficient associated with the bare wall is 40 W/m 2 K, while that resulting from attachment of the fins is 30 W/m 2 K. ChEn 323 – Chapter 3 Problems  Slide 6 Problem 3.141 (continued)...
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This homework help was uploaded on 03/26/2008 for the course CHEN 323 taught by Professor Johnbaldwin during the Fall '03 term at Texas A&M.
 Fall '03
 JOHNBALDWIN

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