Ask about the design of steam heating heat exchanger. Thanks!
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Let me ask you a question. When I used HTFS 2006+ to calibrate the heat exchanger for steam condensation and heating of pure water, for the steam side, the inlet vaporization fraction was set to 1, the outlet was set to 0, and the set pressure was 0.8 kg. There was no problem in operation. But there is a sentence like this in note.: one or more input or vapor property data points for stream 1 (referring to my steam logistics) at 0.7848bar have been rejected, because they are either duplicate or incomplete. Does it mean that my data does not correspond? For saturated steam, if I input the steam pressure arbitrarily, this sentence will appear in both the temperature and the vaporization fraction. How do you explain this change? I don't understand very well, please give me some advice, thank you!
It should be a warning message caused by the inconsistency between the saturated vapor pressure you entered arbitrarily and the physical properties of water in the database. You can import the data and try not to enter the physical properties yourself.