Dears I am reaching out to seek guidance regarding an issue I encountered while using DWSIM to develop a flowsheet for a CCU (Carbon Capture and Utilization) project. Specifically, when attempting to modify the values of pressure, temperature, and feed in the simulation, I encountered an error message. I kindly request your advice on how to successfully simulate the CCU process with varying temperature, pressure, and feed flow rate. If there are specific steps or procedures that I should follow, I would greatly appreciate your guidance. I look forward to your response.
Hi Jeremy, great work on the tutorial. I work in the grain whisky industry and I'm looking to build a simulation of the process taking into consideration the granular/particulate physical composition of the feed stock to the distillation column; can I represent this physical composition in DWSIM and how do I do it. Thanks
Sorry for the delayed response, in general process simulators don't handle solids in liquid streams at all. that being said if seen some workarounds. I'd have to know more about your setup.
How can i make tee pipe? There are only one inlet stream and one outlet stream that has connection to the pipe. I want to make pipe that connected to 3 streams.
When I follow the step at time 11:02 in the spreadsheet I get the error: " ERROR: the given key was not present in the dictionary." I double check my Master property table in and confirm that I have selected and can see the Mass flow. Furthermore, it also does not work when i request other properties from the spreadsheet eg .."temp, pressure"
If you look for the pinned comment, where Daniel Wagner replied and post your question there perhaps Daniel can help, he is one of the developers of DWSIM.
Both pressure and temperature decreased, the pressure went from 2 atm to 1.96 atm and the temperature from 111.48 C to 111.47 C. The signs on the pipeline block callout are incorrect but this was fixed in later edition of DWSIM.
Hi Jeremy, I'm writing you because i need your help. I have to make a simulator with DWSIM about Transalkylation of toluene to obtain benzene and p-xylene. could you help me ? my name is Gerard and i need it
Hi great tutorial! When I open the "Configure Simulation", the database DWSIM will not be shown. I can only see the database from Chemsep, Coolprop, Electrolytes and Biodiesel. Can you help me? Thanks
hocam merhaba ben bitirme tezim program similasyonu ama youtube ogretıcı degil yorumlarda bitek siz türk vardınız:) yardımcı olursanız bu konuda çok sevinirim
@4D Tutorial TV, can you create a tutorial for a rigorous simulation of a distillation column. Your videos are very helpful. Thanks in advance for the efforts.
Everything seems to work except on my version 4.3 using linux I cannot seem to get the "Activate Simultaneous Adjust Solver" to work and my output stream on the mash is ~661 g/s with a mass flow of 645 g/s
I have an anomaly in my solution for volumetric flowrate. The mixture density shows up as 1.42 g/cm3 in the mixer outlet but that's impossible. I'm running version 4.2 using mono on arch linux. Could there be an error in the property tables?
Thank you very much for the informative videos! Very helpful indeed! Can you please let me know from when I can gain access to your remaining videos on DWSIM?
Same problem here, have you found a way around this problem? Sometimes it calculates it with a negative pressure and a huge decrease in temperature, sometimes the pressure goes below 0 and i receive an error :/
I changed the number of segments in the hydraulic menu to 10 from 5. This enabled me to run the Lockhart method for calculating pressure drop. Also, notice he didn't put a thickness in the insulating material. I calculated a ~9.8 degree Celsius drop across the pipe 0 cm thickness of polyurethane and ~7.4 degree Celsius drop across the pipe with 10 cm thickness polyurethane. My pressure drops were between 0.4 and 0.6 atm for the simulations.
If you plot the Temperature vs Pressure for the pipe segment, there is a linear correlation. I'm not familiar enough with the mechanics of the equations to understand why that would be the case, however, it shows that your hydraulic model will directly determine your overall heat transfer coefficient calculations utilizing this method; that is - the lower the pressure drop the lower the temperature change
Lockhart & Martinelli is not recommended for two phase flow. With an elevation of 100 cm the liquid will vaporize as a result of the pressure drop. You should use the Petalas-Aziz correlation instead.
try to go back and follow the video exactly. pay attention to the lower and upper limit values for your first independent variable. upper limit should be greater than 0, I used 500.
