Repeat Prob. 1972 for a heat transfer coefficient of 40 W/m 2 K. Combustion gases passing through
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Repeat Prob. 19–72 for a heat transfer coefficient of 40 W/m2∙K.
Combustion gases passing through a 3-cminternal-diameter circular tube are used to vaporize waste water at atmospheric pressure. Hot gases enter the tube at 115 kPa and 250°C at a mean velocity of 5 m/s, and leave at 150°C. If the average heat transfer coefficient is 120 W/m2∙K and the inner surface temperature of the tube is 110°C, determine
(a) The tube length
(b) The rate of evaporation of water.
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Related Book For 
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
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