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Why is there always no liquid on the first tray in the Aspen absorption/desorption cycle stream?

2015-06-05View Original

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In the Aspen absorption/desorption cycle simulation, why is there no liquid on the first tray all the time? What does setting initial values mean anyway? Is it necessary to perform some preliminary calculations before using the Radfrac model? Is that the case? It’s so frustrating; it finally converges, but as soon as the conditions are changed, it stops converging. There’s no flexibility at all :(

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