Issues regarding the heat transfer coefficient of negative pressure steam condensation
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Dear experts, the materials are dehydrated and dried under negative pressure, with the water vapor being condensed using a shell-and-tube heat exchanger. The gas flow rate in the shell side is as follows: 130 kg/h of air from system leaks, 200 kg/h of water vapor; the vacuum level is 15 kPa (with the water vapor temperature at 53.5 degrees). The designed outlet water temperature is 38.9 degrees. Piping: Water, 0.4 MPa, inlet temperature 30 degrees, outlet temperature 35 degrees. How is the heat transfer coefficient calculated in this case....... Thank you!
For this, heat exchanger selection calculations should be carried out first, to determine the diameter, the number of heat exchange tubes and their arrangement, as well as the baffle plates, etc. You haven’t specified the inflow flow rate for your pipe train. It’s possible to do this by hand, but it’s too slow; using Heat Exchanger Master should make it much faster. May I ask @wiseboy for advice?