A type-304 stainless steel billet, 6 in. in diameter, is passing through a 20-ft-long heat-treating furnace. The
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A type-304 stainless steel billet, 6 in. in diameter, is passing through a 20-ft-long heat-treating furnace. The initial billet temperature is 200°F, and it must be raised to a minimum temperature of 1500°F before working. The heat-transfer coefficient between the furnace gases and the billet surface is 15 Btu/h ft2 °F, and the furnace gases are at 2300°F. At what minimum velocity must the billet travel through the furnace to satisfy these conditions?
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Related Book For 
Fundamentals Of Momentum Heat And Mass Transfer
ISBN: 9781118947463
6th Edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
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