What is the difference between the Rating mode and the Simulation mode in heat exchanger simulation? Which mode’s results should be used to calculate the heat exchanger?
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I would like to ask the experts: When using Aspen to analyze heat exchangers that are already in use, there is a significant difference between the results obtained from the Rating mode and the Simulation mode. I want to determine the amount of cooling medium required for the heat exchanger; I’m not sure which mode should be used to get accurate results
It should be the rating mode
Simulation mode: Using a pre-designed heat exchanger (with some margin), and under the given inlet process conditions, the entire heat exchange area is utilized to simulate and calculate the outlet conditions. At this point, the entire area is utilized, so the remaining area is 0 (area ratio = 1)