HYSYS Fired Heater modelling
HYSYS Fired Heater modelling
(OP)
Hello and good day to dear Engineers,
First of all, I am new to this Engineering forum. I believe that I can be given some good guidance and references from you all through this forum.
I was given a task to model the existing steam generator with a fired heater using HYSYS program. I have not done this fired heater with HYSYS model before. So, i would like to post my question to get some ideas to start my work.
1. I have tried to model this with the simplified model and after I specified all the inputs, the output temperature does not change (T in = T out). Why does the Temp. the same?
2. How can I specified the Air and Fuel input?
3. How can I identified the impact of the Temp. Change to tube (tube expand)?
Appreciate your support in this regard.
Thanks,
First of all, I am new to this Engineering forum. I believe that I can be given some good guidance and references from you all through this forum.
I was given a task to model the existing steam generator with a fired heater using HYSYS program. I have not done this fired heater with HYSYS model before. So, i would like to post my question to get some ideas to start my work.
1. I have tried to model this with the simplified model and after I specified all the inputs, the output temperature does not change (T in = T out). Why does the Temp. the same?
2. How can I specified the Air and Fuel input?
3. How can I identified the impact of the Temp. Change to tube (tube expand)?
Appreciate your support in this regard.
Thanks,





RE: HYSYS Fired Heater modelling
take care that fired heaters are not simple to model,
with a different software (Prode Properties) I model separately combustion (solving a reactor or starting from HC heats of combustion) and water/oil side (as heat exchanger),
I do this in Excel or Matlab (with Prode library) and results are about accurate (for a realistic simulation one should consider really a lot of different parameters...)
Consider also these aspect when evaluating your results...
RE: HYSYS Fired Heater modelling
I am posting this basically to gain some guidance from this forum (I assuming that some one might have done this before).
From the model I have built, I want to know how much heat I can transfer from radiant zone to convective zone (to make convective zone equal to 350 deg C). However, from my model even i have increase the Temperature and the flow rate of the flue gas the outlet from convective zone doesn't change at all. (Convective Tin = Tout)?
If someone has done or used the HYSYS software to simulate fired heater, would be great I can get you thoughts.
RE: HYSYS Fired Heater modelling
if you wish that software estimates heat transfers with sufficient accuracy you should also define the geometry and several other parameters (as I do in Excel / Matlab with Prode),
if input form for fired heaters has all these fields probably it's only a matter to enter the correct data... some other member can help.