4 replies to this topic

[omaroma1]

Please can you help me how can I solve a heat exchanger? I mean what is the required data to solve the exchanger?

Thanks

[Zauberberg]

Omaroma my friend,

Please put at least some minimum effort to describe what is your problem exactly. Doing this way, there is no person in this Universe who can give you any valuable answer. And most of them will not even bother to guess what can be the issue here.

Are you sizing heat exchanger in some industrial software? What are your input (known) data, and what are the targets and constraints? What is given as process input in your calculations?

Please come with more detailed information.
Best regards,

[smuk]

Dear Omaroma,

I presume you are trying to find out required of a heat exchanger, or you want to know outlet temperatures of hot and cold streams, pressure drop, fouling etc. If o specify, the metod can be given.

smuk

[omaroma1]

Thanks every one
I wannt to use Hysys to get the duty of heat exchanger(stabilizer reboiler)shell and tube.
The hot side is a Hot oil and the cold side will be condensate with 130 C to be heated to 170 C.

[Zauberberg]

Hi Omaroma,

Basically, you don't need HYSYS in order to calculate exchanger duty. What you need is:

- Hot oil mass flowrate
- Hot oil average heat capacity (average for inlet and outlet conditions)
- Hot oil temperature change (inlet - outlet)

Based on hot oil properties (you must have some data supplied), you can use any technical reference book (API, GPSA, Perry) for finding heat capacity of utility stream. As rough estimate, you can guess a value between 2.3 and 2.7 kJ/kg.C

If you want to do it for other purposes, bulding a stabilizer tower model with accurate feed and products data, operating conditions and exact tower configuration should yield in very accurate reboiler duty estimate, within +/-5% error.

Best of luck,