FLASH FAILED FOR HOT STREAM - Aspen plus error?

03 August 2021 1 9K Report

As a part of my system, there is a heat exchanger.

Hot stream - water vapour - comes in at 17.12degC, 0,00714648 bar, completely in the vapour phase

Cold stream - refrigerant R1234ze in a saturated liquid state. The properties of HEATX is given below in the image. I get this error - ** ERROR T-LOOP NOT CONVERGED IN 37 ITERATIONS. FLASH FAILED FOR HOT STREAM DURING ENERGY BALANCE CALCULATION

I would be grateful if someone could clarify what this error could be due to. Thank you.

Daniele Buongiorno

Hi,

It can be a numerical problem. You can try to increase the number of cycles for the convergence from the different setups for the convergence; after you have to reinitialize your simulation and so you have to run.

bye

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