saving . . . saved HE-01: PH Flash has been deleted. HE-01: PH Flash has been hidden .
HE-01: PH Flash
invalid result temperature did not coverage 

DWSIM Shell-and-Tube-Heat-Exchanger 12-13 min 20-30 sec 19-02-21, 12:56 p.m. kSABER


In the latest version, change the following values of the shell and tube side properties as mentioned below:

Shell Inlet Diameter from 1000 to 1000000
Baffle Spacing from 250 to 250000
Tubes Internal Diameter from 15 to 15000
Tubes External Diameter from 20 to 20000
Roughness from 0.05 to 50
Tube Spacing from 25 to 25000

In other words, all the parameters of the shell and tube side which have units displayed as mm have been multiplied by 1000. This is due to a recent change in the source code of DWSIM where the unit of the above-mentioned parameters is considered to be in micrometer during the calculation. While this tutorial was created, the unit system used in the source code was millimeter.

However, you might see a slight variation in the results. This is due to some minor bug fixes in the shell & tube heat exchanger code.
19-02-21, 12:57 p.m. priyamnayak

19-02-21, 1:06 p.m. kSABER
You have entered the following incorrect input values:

The pressure of "Methanol In" material stream is entered wrongly as 1 bar instead of 5 bar.
Roughness has not been changed as mentioned earlier from 0.05 to 50

Enter these two values correctly and try re-simulating the unit.
19-02-21, 1:15 p.m. priyamnayak

Login to add comment

Log-in to answer to this question.