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A steel tube (k = 50 W/m · K) of inner and outer diameters Di = 20 mm and Do = 26 mm. respectively, is used to transfer heat from hot gases flowing over the tube (hh = 200 W/m2 · K) to cold water flowing through the tube (hc = 8000 W/m2 · K). What is the cold-side overall heat transfer coefficient Uc? To enhance heat transfer, 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. The fins are equally spaced around the circumference of the tube, each having a thickness of 2 mm and a length of 15 mm. What is the corresponding overall heat transfer coefficient Uc?
one would like to find preheat 2 tons h of a solution with a specific heat capacity of 3.35 kj kg k from 15 c to 70
Explain why terminal velocity is used instead of the initial velocity or the velocity before the particles have accelerated due to gravity to the terminal velocity. Then define the yield stress. Then introduce the two step solution to the problem ..
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how does the statistical mechanical definition of entropy allow a reinterpretation of the second and third law of
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