Water at m = 0.02 kg/s and Tm.i = 20C enters an annular region formed by an
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Water at m = 0.02 kg/s and Tm.i = 20°C enters an annular region formed by an inner tube of diameter Di = 25 mm and an outer tube of diameter Do = 100 mm. Saturated steam flows through the inner tube, maintaining its surface at a uniform temperature of Ts,j = 100°C, while the outer surface of the outer tube is well insulated. If fully developed conditions may be assumed throughout the annulus, how long must the system be to provide an outlet water temperature of 75°C? What is the heat flux from the inner tube at the outlet?
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Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
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