A 1.4-kg aluminum household iron has a 500 W heating element. The surface area is 0.046 m2.
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A 1.4-kg aluminum household iron has a 500 W heating element. The surface area is 0.046 m2. The ambient temperature is 21?C and the surface heat transfer coefficient is 11 W/(m2 K). How long after the iron is plugged in will its temperature reach 104?C?GIVENAn aluminum household ironMass of the iron (M) = 1.4 kgPower output (QG) = 500 WSurface area (As) = 0.046 m2The ambient temperature (T??) = 21?CThe heat transfer coefficient (hc ) = 11 W/(m2 K)ASSUMPTIONSConstant heat transfer coefficientThe mass given is for the heated aluminum portiononly
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To calculate the Biot number for this problem we must first calculate the cha...View the full answer
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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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