How can I calculate crass-ventilation on the basis of CO2 concentration?

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Yvan Dutil

In theory you could use mixing ratio to calculate flux balance, but you need some sort of prior knowledege of the CO2 production rate.

Kuppu Samy

Dear Duitil,

thank you very much for your valuable ans

can you give me the any reference for the calculation

Bin Zhao

It depends on if there are CO2 generation source indoor. If there are, you may need to know the generation rate of CO2, which is usually generated by human bodies. If there are not, you only need to know the initial CO2 concentration and the decay curve.

Good luck.