Thermodynamics HW Solutions 182

Thermodynamics HW Solutions 182 - Chapter 15 Steady Heat...

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Chapter 15 Steady Heat Conduction 3-47 Two cylindrical aluminum bars with ground surfaces are pressed against each other in an insulation sleeve. For specified top and bottom surface temperatures, the rate of heat transfer along the cylinders and the temperature drop at the interface are to be determined. Assumptions 1 Steady operating conditions exist. 2 Heat transfer is one-dimensional in the axial direction since the lateral surfaces of both cylinders are well-insulated. 3 Thermal conductivities are constant. R i R glass R o T 1 T 2 Bar Bar Interface Properties The thermal conductivity of aluminum bars is given to be k = 176 W/m °C. The contact conductance at the interface of aluminum-aluminum plates for the case of ground surfaces and of 20 atm 2 MPa pressure is
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This note was uploaded on 01/14/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.

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