Long cylindrical steel rods (r = 7833 kg/m3 and cp = 0.465 kJ/kg C) of 10-cm

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Long cylindrical steel rods (r = 7833 kg/m3 and cp = 0.465 kJ/kg • °C) of 10-cm diameter are heat-treated by drawing them at a velocity of 3 m/min through a 6-m-long oven maintained at 900°C. If the rods enter the oven at 30°C and leave at 700°C, determine
(a) The rate of heat transfer to the rods in the oven and
(b) The rate of energy destruction associated with this heat transfer process. Take T0 = 25°C.
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Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

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