Frank R Brown III

Why not create an Air Stream from Oxygen, Nitrogen, Argon and some water? That should give you all the properties you will need.

Bad News DWSIM's background is the hydrocarbon industry. It was made to deal with vapour-liquid processes, not electrical phenomena. The fact that DWSIM has been broadened to deal with solids and electrolites is great. It is really a great extension of theory. But it is not a process simulation program for electrical flows etc. Seeing that you have a "dortmond.de" address, you may want to try DWSIM-PRO. it is based in Germany. sincerely, I wish I could help Frank R Brown III Chem Engr (ret.)

Mario: One of the places that the Hea Exchanger software has trouble is when there is a temperature cross. That is when the Cold stream exits at a higher temperature than the Hot stream.

Using Data from the NGPSA Data Book I found the stream to be 7505.76 kJ/kg. Incidently speaking of typos I assumed 0.2% N2 from 0.02 to make the total 100%.

Try deactivating the reactor until you get everything else set the way you want it. Then Activate the reactor. You can Deactivate reactor with a button on the top of the bar or beside the reactor title on the parameter sheet.

Alahmad The DWSIM simulator cannot handle nuclear reaction: yet. maybe some day. The reactions it handles are reactions involving the electonic shells. It is not capable of reactions involving the nuclear core, fusion of protons and neutrons.

Hi ditt: Try summing the Enthalpy of the exiting streams and subtracting the Enthalpy of the entering streams. The difference should equal the Energy stream either positive or negative. Sum the Enthalpy of each component on a mass or mole basis multiplied by the mass or moles as appropriate. The MCpDelta T method may not be accurate if there are large changes in Cp and/or Delta T.

Aicha Boumaiz: So how far have you gotten? I guess you must be able to specify the component fatty acids in Bleached Palm Oil Deodorization. And you have a good idea of how much steam is going to be needed and at what conditions, pressure and temperature. Then you can probably do it with an absorber acting as an extraction column. Finally, since nothing is ever 100% removal you have an understanding of what level of removal is desired. Bear in mind, that different fatty acids will have different...