1 reply to this topic

[pingz]

hello to all, i am currently doing my school project that requires me to simulate a furnace (fired heater) on hysys to heat up my feed before separating. is there any one who can teach me on how to go about modeling it on hysys? i understand that fired heater in hysys is actually for dynamic system but i am unsure if my system is steady state or dynamic. can anyone please kindly advise? it would be great if anyone can suggest any readings on hysys modeling for fired heater as i cant seem to find any. thanks!

[thorium90]

you could read the operations guide. It can be found online. Also it would help if you describe you project. No way to tell if it can be done in steady state or if it is necessary simply by

heat up my feed before separating

That line is not helpful enough.
As a preliminary reply, I would say that since fired heaters are in fact "heaters", just that they are fired, you could model it as steady state if you know the heat input or the stream temperature of the heated stream.
But if you need to know more info like the various sections, heat transfer in the radiant, convection section, stack effect etc, then you would need the fired heater module.
But fired heater module is useful for dynamics mode (play with the flame off and on, try out other excess air), otherwise in steady state, its just as good as using the "heater" module. No difference in steady state.

Edited by thorium90, 28 January 2013 - 09:27 AM.