Could an expert help me understand what this message means?

2011-07-19View Original

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When I’m performing dynamic simulations using HYSYS, the following message appears in the Trace Window: \"Heat Exchanger E-100-2 has an excessively low calculated Ft Factor. This value is limited to 0.2 (internal value) as the applicable range of the correlation formula has been exceeded; this situation may also lead to dynamics instability. If this message continues to appear during dynamic simulations, consider reducing the UA value. This message will appear only once per session for this unit operation, unless Trace Verbose is enabled.\" Although I can look up the meaning of words I don’t know, I’m not experienced in the chemical engineering field and I’m also new to using HYSYS, so I don’t quite understand it. Could someone who is more knowledgeable help me explain what this means exactly? What went wrong?

Reply #22011-07-19

If UA is too large, reduce its value

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Could an expert help me understand what this message means?

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