Dear All, I would like to model CO2 concentration in such situation: - Single family house (wooden), - Outside concentration: 350 ppm (constant), - Initial inside concentration: 700 ppm, - No sources, no sinks, - Air node connection are defined (between thermal and external air nodes). I defined CO2 with molar mass 44.01 kg/kmol, and I put 0.0007 kg/kg CO2 in each zone. But what value of decay (contaminant definition and zone definition) should I use??? What does it depend on? Regards, Karol ----------------------------------------- mgr inż. Karol Bandurski Instytut Inżynierii Środowiska Politechnika Poznańska www.put.poznan.pl/~karol.bandurski |