Thermodynamics HW Solutions 160

# Thermodynamics HW Solutions 160 - Chapter 3 Steady Heat...

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Chapter 3 Steady Heat Conduction 3-18 The two surfaces of a window are maintained at specified temperatures. The rate of heat loss through the window and the inner surface temperature are to be determined. Assumptions 1 Heat transfer through the window is steady since the surface temperatures remain constant at the specified values. 2 Heat transfer is one-dimensional since any significant temperature gradients will exist in the direction from the indoors to the outdoors. 3 Thermal conductivity is constant. 4 Heat transfer by radiation is negligible. Properties The thermal conductivity of the glass is given to be k = 0.78 W/m °C. Analysis The area of the window and the individual resistances are A = (. ( . 12 2 24 m) m) m 2 C/W 06155 . 0 01667 . 0 00321
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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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