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How are CO2 concentration values initialised? [closed]

asked 2020-11-09 10:36:30 -0500

Adrien's avatar

I added a ZoneAirContaminantBalance object to my model and noticed that the zones with occupancy but without natural nor mechanical ventilation systems have a very high CO2 concentration value since the first timestep (between 6000 and 10000 ppm). Where come those values from? It looks a bit as if energyplus sizing initialized those values with the accumulation of CO2 for about a year instead of using the outdoor concentration. Is that the case?

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Closed for the following reason the question is answered, right answer was accepted by Adrien
close date 2020-11-12 05:54:54.441127

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answered 2020-11-12 05:54:25 -0500

Adrien's avatar

I found the cause for the abnormally high CO2 concentration initialisation values and created an enhancement request here:

Regarding this topic's main question: I guess the answer is "Yes", values are initialized with the sizing results. Thus I will close this, but feel free to comment if you can give me more details :-)

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Asked: 2020-11-09 10:36:30 -0500

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Last updated: Nov 12 '20