Water flows through a thick-walled tube with an
Chapter 8, Problem 8.41(choose chapter or problem)
Water flows through a thick-walled tube with an innerdiameter of 12 mm and a length of 8 m. The tube isimmersed in a well-stirred, hot reaction tank maintainedat 85C, and the conduction resistance of the tube wall(based on the inner surface area) is Rcd?0.002 m2?K/W.The inlet temperature of the process fluid is Tm,i?20C,and the flow rate is 33 kg/h.(a) Estimate the outlet temperature of the process fluid,Tm,o. Assume, and then justify, fully developed flowand thermal conditions within the tube.(b) Do you expect Tm,oto increase or decrease if com-bined thermal and hydrodynamic entry conditionsexist within the tube? Estimate the outlet tempera-ture of the water for this condition
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