In a ball-bearing production facility, steel balls that are each of 15 mm in diameter are annealed
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In a ball-bearing production facility, steel balls that are each of 15 mm in diameter are annealed by first heating them to 870°C and then slowly cooling in air to 125°C. If the cooling air stream temperature is 60°C, and it has a convective heat transfer coefficient of 35 W/m2 • K, determine the time required for the cooling.
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GIVEN FIND The time required for cooling ball bearing to 1250C ASSUMPTIONS Cons...View the full answer
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Related Book For
Principles Of Heat Transfer
ISBN: 9781305387102
8th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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