For a boiling process such as shown in Figure 1.5c, the ambient temperature T in Newtons

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For a boiling process such as shown in Figure 1.5c, the ambient temperature T in Newton’s law of cooling is replaced by the saturation temperature of the fluid Tsat. Consider a situation where the heat flux from the hot plate is q" = 20 X 105 W/m2. If the fluid is water at atmospheric pressure and the convection heat transfer coefficient is hw = 20 X 10W/m2 · K, determine the upper surface temperature of the plate, Ts,w. In an effort to minimize the surface temperature, a technician proposes replacing the water with a dielectric fluid whose saturation temperature is Tsat,d  = 52°C. If the heat transfer coefficient associated with the dielectric fluid is hd = 3 X 10W/m2 · K, will the technician’s plan work?

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Fundamentals Of Heat And Mass Transfer

ISBN: 9780470501979

7th Edition

Authors: Theodore L. Bergman, Adrienne S. Lavine, Frank P. Incropera, David P. DeWitt

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