A hot fluid passes through a thin-walled tube of
Chapter 8, Problem 8.60(choose chapter or problem)
A hot fluid passes through a thin-walled tube of 10-mmdiameter and 1-m length, and a coolant at T??25C is in cross flow over the tube. When the flow rate ism??18 kg/h and the inlet temperature is Tm,i?85C,the outlet temperature is Tm,o?78C.m = 18 kg/hTm,i= 85CCoolantHot fluidT= 25CTube, D = 10 mm,L = 1 mTm,o = 78COven exhaust gasesOutlet Diameter,0.5 mInletStack baseStackHeight, 6 mOvenBuildingThermal plumeAssuming fully developed flow and thermal conditionsin the tube, determine the outlet temperature, Tm,o, if the flow rate is increased by a factor of 2. That is,m??36 kg/h, with all other conditions the same. The thermophysical properties of the hot fluid are ??1079 kg/m3, cp?2637 J/kgK? , ??0.0034 N?s/m2, an? .261 W/m?K
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