Seeking help regarding Aspen HeatX heat exchange unit
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* WARNING: The calculated feed temperature for the cold side (4.6747826D+02) is inconsistent with its inlet stream value (2.9100000D+02). Probable cause: loose flash tolerance, or an upstream block with different phase specifications or property methods. The calculated value will be used in calculations. I keep encountering such warnings when using the Aspen HeatX unit; the property methods for this heat exchanger are the same as those of the upstream components. The heat flow stream in this heat exchanger uses utility steam; there are no issues when using the heater unit, but the above warning appears when switching to the HeatX unit. Does anyone know what to do? Not very grateful! Below are the data for the flow rate before and after passing through the heat exchanger:
There isn’t enough information to determine this, but it’s likely not due to inconsistencies in the property calculation methods; the temperature differences indicated are quite large. Inconsistencies in such methods usually result in differences of only a few degrees at most. Please provide more input details – are there any other sub-streams involved? Or upload a file