4 replies to this topic

[ashetty]

Hello all,

Does anyone know if there is any way to generate an adiabatic heat curve in HYSYS.Requirement is for a 2 phase line wherein i`d like to know the % vaporized progressively along the line (Maybe at around 5 points along the line), and also the properties of vapour & liquid at these points.I have attached a similar table for your reference.

Thanks,

A.Shetty

Attached Files

•  Example.xls   24KB   84 downloads

[Zauberberg]

You can do it the other way round: use pipe segment (Unit Op from HYSYS), specify adiabatic flow regime and set as many increments/points as you want for your pipeline. Then, after convergence, for each step/point you can read pressure and temperature values.

Make another stream which has the same composition as the stream you want to analyze and apply these P,T parameters in order to calculate vapor fraction, phase properties etc. at each point.

Dear Shetty:

Zauberberg's suggestion is nice. I also prepared heat curve before with similar way. Pls find the attached Hysys file for your reference.(You can change the composition as you preferred, and rerun case study)
Hope it helps.
Pls change the file extension to "hsc" after downloading.

Best regards,
P.Wang

Attached Files

•  HeatCurveCalculation.txt   44.61KB   98 downloads

[ashetty]

Hello guys,

Thank you for the inputs.

Verylazybird, unfotunately i could`nt open your file, but i executed it as suggested by Zauberberg.I was actually checking the static head of a two phase line running up a column which was almost 100 mts.There is another stream tying in midway along the line.Was worried if the pressure balance performed earlier, using only data at the top, and the inlet control valve outlet at the bottom of the column.So the intention was to divide the piping into segments, obtain the property data from the simulator and feed it into our spreadsheet to recheck the pressure profile.I know this defeats the pupose of using the simulator....but i wanted to recheck a few things.

Thanks again.

[Zauberberg]

If this is a flashing stream (column bottoms, downstream of CV) flowing up to the next tower/column, make sure to size the line in such way you'll avoid slug flow. Otherwise, it can easily result in premature tower flooding in the feed zone.