Physics Help Forum Heat exchanger

 Thermodynamics and Fluid Mechanics Thermodynamics and Fluid Mechanics Physics Help Forum

 Jul 9th 2019, 06:13 AM #1 Junior Member   Join Date: Jul 2019 Posts: 1 Heat exchanger At work, we have a tube and shell heat exchanger. The fluid to be heated is water and the other fluid is steam. -------------------------------------- Theoretical ... Btu / h: 136.1 x10 ^ 6 Flow Steam: 136,000 pph (I think it's pound per hour) Ti of the steam: 312 F To the steam: 212 F Psi steam: 65 psi Water flow: 3110 USGPM (us allon per minute) Water Ti: 70 F to water: 158 F Psi of water: 100 psi Area: 3800 ft ^ 2 LMTD (corrected): 148 ----------------------------------------- 1. The strange thing is that our steam line can only have 14,000 kg/h of steam and according to the equation Q = m * Cp * dT, the steam flow should be above 1,000,000 lbs / h? 2. What I would like to do: The exchanger is not always in use. When not in use, I would like to give him 530 kg of steam to heat the water. What is the flow of water needed to increase the dT of it by 3 F? Thank you so much , JohnMitchell

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