CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

co2 concentration inside room

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 24, 2023, 16:50
Default co2 concentration inside room
  #1
New Member
 
morteza hajati
Join Date: Mar 2013
Posts: 6
Rep Power: 13
gashti is on a distinguished road
Hi guys,
I intend to model the distribution of CO2 in a room. I have written the governing equation for CO2 concentration, but I have the CO2 production rate in the room in units of L/s. How can I convert this production rate to ppm/s?
gashti is offline   Reply With Quote

Old   July 24, 2023, 20:56
Default
  #2
Senior Member
 
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,758
Rep Power: 66
LuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura about
Divide by the volume over which the production occurs (the entire room?) and then multiply by 1 million
LuckyTran is offline   Reply With Quote

Old   July 25, 2023, 00:11
Default
  #3
New Member
 
morteza hajati
Join Date: Mar 2013
Posts: 6
Rep Power: 13
gashti is on a distinguished road
Thank you for responding.

The production of CO2 occurs through the breathing of individuals present in a room. Shouldn't we divide the rate of CO2 production by the exhaled air rate of individuals and multiply it by one million to obtain the ppm (parts per million) value?
gashti is offline   Reply With Quote

Old   July 25, 2023, 00:24
Default
  #4
Senior Member
 
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,758
Rep Power: 66
LuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura about
well that would certainly depend on whether your rate in L/s is for one person or one thousand. When you say you have the rate, I have to assume that you actually have the rate.
LuckyTran is offline   Reply With Quote

Old   July 25, 2023, 14:52
Default
  #5
New Member
 
morteza hajati
Join Date: Mar 2013
Posts: 6
Rep Power: 13
gashti is on a distinguished road
The concentration of CO2 is not dependent on the number of individuals. If we divide the CO2 production rate in L/s by the exhaled air rate in L/s, whether it is for one person or one thousand people, the CO2 production rate will remain constant in ppm/s (parts per million per second).

Now, my question is how to convert the CO2 production rate from L/s to ppm/s, regardless of whether there is one person or one thousand people.
gashti is offline   Reply With Quote

Reply

Tags
co2 concentration, hvac, openfoam

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
CO2 and Age of Air b.simpson OpenFOAM Running, Solving & CFD 1 September 16, 2022 07:08
DPM Steady Local Collection Efficiency and Concentration Cells Error Manathan Fluent UDF and Scheme Programming 0 April 8, 2015 13:06
concentarationof gas inside room hanid Main CFD Forum 0 August 7, 2008 04:30
initial concentration in multicomponent mixtures isidro Siemens 0 April 26, 2004 08:40
simulate the contamnate concentration in a room jejuneye FLUENT 2 July 28, 2003 04:43


All times are GMT -4. The time now is 11:56.