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Old   July 24, 2023, 15:50
Default co2 concentration inside room
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morteza hajati
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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?
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Old   July 24, 2023, 19:56
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Divide by the volume over which the production occurs (the entire room?) and then multiply by 1 million
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Old   July 24, 2023, 23:11
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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?
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Old   July 24, 2023, 23:24
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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.
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Old   July 25, 2023, 13:52
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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.
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