I’ve been trying to understand how natural ventilation is working by correlating air flow volume and zone temperature results from ‘Honeybee_readEP Results’ and I’m noticing few issues that I’m not too sure why they’re happening.
To give you a bit of context, I have the minimum indoor tempt for nat vent in the natural ventilation component to 22°C (as shown in the image below) and I understand that air flow volume is combining both ventilation through windows and infiltration so I sat infiltration to 0 and what I find slightly strange is that I still get values for air flow volume when the temperature is below 22°C. I would assume air flow volume to be 0 in that case.
Also, I’ve tested that for all types of temperatures (air temperatures, mean radiant temperature and operative temperature) as I wasn’t too sure which temperature the natural ventilation component is referring to, however still the same case, air flow volume is not 0 when temperatures are below 22°C.
Please note that the zones are set to be unconditioned.
Any ideas what is the reason for that?