A thin-walled concentric tube heat exchanger of 0.19-m
Chapter 10, Problem 10.62(choose chapter or problem)
A thin-walled concentric tube heat exchanger of 0.19-m length is to be used to heat deionized waterfrom 40 to 60?C at a flow rate of 5 kg/s. The deionizedwater flows through the inner tube of 30- mm diameterwhile saturated steam at 1 atm is supplied to the annulusformed with the outer tube of 60-mm diameter. Thethermophysical properties of the deionized water are??982.3 kg/m3, cp?4181 J/kg?K, k?0.643 W/m?K,??548?10?6N?s/m2, and Pr?3.56. Estimate theconvection coefficients for both sides of the tube anddetermine the inner tube wall outlet temperature. Doescondensation provide a fairly uniform inner tube walltemperature equal approximately to the saturation tem-perature of the steam?
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