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  3. liquid bismuth flows at a rate of 4.5 kg/s through

Liquid bismuth flows at a rate of 4.5 kg/s through a 5.0-cm-diameter stainless-steel tube. The bismuth...

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Mechanical Engineering

Liquid bismuth flows at a rate of 4.5 kg/s through a5.0-cm-diameter stainless-steel tube. The bismuth enters at 415oCand is heated to 440oC as it passes through the tube. If a constantheat flux is maintained along the tube and the tube wall is at atemperature 20oC higher than the bismuth bulk temperature,calculate the length of tube required to effect the heat transfer.For liquid bismuth: ? = 1.34 ?10-3 kg/m· s Cp = 0.149 kJ/kg.oC k =15.6 W/m. oC Pr = 0.013

Answer: L = 1.57 m

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