A metallic sphere of diameter 5 cm is initially at a uniform temperature of 300oC. Suddenly the
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A metallic sphere of diameter 5 cm is initially at a uniform temperature of 300oC. Suddenly the metal sphere is immersed in a fluid at 30oC. The convective heat transfer coefficient between the surface of the sphere and the fluid is 500W/m2K. Assume k=60W/mK, cp=460 J/kgK, density =7850 kg/m3 , = 1.6 105 m2 /s for the metallic sphere. Calculate at t = 2 minutes - The center temperature after the start of the cooling - The temperature at a radius of 1.5 cm after the start of the cooling - The surface temperature - The energy removed from the sphere during this period of 2 minutes
Related Book For
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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