Estimate the time required to freeze vegetables in thin, tin cylindrical containers 15 cm in diameter. Air
Question:
Estimate the time required to freeze vegetables in thin, tin cylindrical containers 15 cm in diameter. Air at ??12?C is blowing at 4 m/s over the cans, which are stacked to form one long cylinder. The physical properties of the vegetables before and after freezing may be taken as those of water and ice, respectively.GIVENThe freezing of vegetables in thin tin cylindrical cans with air flowing over the cansContainer diameter (D) = 15 cm = 0.15 mAir temperature (T??) = ??12?CAir velocity (U??) = 4 m/sVegetables have the same properties as water and iceASSUMPTIONSAir temperature is constantThermal resistance of the tin can is negligibleThickness of the tin can is negligibleThermal capacitance of the frozen vegetable layer isnegligible
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Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn