How is the dew point calculated for Aspen?
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As the title suggests, which module should be used? I asked several people and each gave me a different answer. Also, is there any difference in the methods for calculating the dew point of pure substances versus mixtures?
There are already answers to this question on the forum; please refer to http://bbs.hcbbs.com/viewthread.php?tid=377027&page=1#pid1998483
Using the flash model, simply set the gas phase or liquid phase to 0, and the calculated temperature will be the desired value
I think there is a simpler way: find the simplest module, such as a mixer, with one flow stream for inlet and another for outlet. Enter the composition of the material system for which you want to determine the bubble point (a mixture or a pure substance) in the inlet stream, specify the pressure, and then set the vapor fraction to 0 (for bubble point calculation) or 1 (for dew point calculation). No special settings are required for this module – just click once, and the status will automatically turn blue. Run it and check the temperature in the calculation results; that is the bubble point or dew point of the material system in question.