Seeking advice on designing heat exchangers at HTRI.
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When I was using HTRI to design a thermosyphon reboiler, I encountered the following issues; I would like to ask for your advice: 1. Is the operating pressure of the cold fluid in the reboiler the inlet pressure or the liquid level pressure at the bottom of the tower? I see that the inlet pressure for Aspen EDR is the bottom of tower liquid level pressure plus 30 KPa. Which value does it refer to in HTRI? 2. When using double-arch baffle plates, how should the overlapping number of tube rows be understood? Where can I set the window area to not have pipes? 3. The operation results show that the bundle entrance velocity exceeds the critical velocity; how can this warning be eliminated?
1 is the pressure at the liquid surface； 2. The baffle is set to NITW; 3. Specify the large pipe diameter
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3. What does it mean to specify the large pipe diameter? I’ve run into this problem too; I don’t know how to solve it