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I'm assessing indoor thermal comfort (Fanger model) with natural ventilation (ZoneVentilation:WindandStackOpenArea) through doors and windows using EnergyPlus. The model is a single thermal zone (3 m x 3m x 3m), windows placed on north and west facade, and door on south facade. Surface area of the door is 2 m2 and window is 1 m2. A total of 8 people are arranged in the thermal zone with light activity level as120 W/m2, work efficiency as 0.5 and clothing as 0.6. The simulation is made run for summer weather conditions (May month) in India. Now the problem is whenever I closed the doors or windows (Schedule:Compact) mostly during night time, the indoor relative humidity in the zone reaches 100%. Also, this only happens when I've applied InternalGains:People for thermal comfort assessment. I am not getting what is wrong, please guide me.

I'm assessing indoor thermal comfort (Fanger model) with natural ventilation (ZoneVentilation:WindandStackOpenArea) through doors and windows using EnergyPlus. The model is a single thermal zone (3 m x 3m x 3m), windows placed on north and west facade, and door on south facade. Surface area of the door is 2 m2 and window is 1 m2. A total of 8 people are arranged in the thermal zone with light activity level as120 W/m2, W/person, work efficiency as 0.5 and clothing as 0.6. The simulation is made run for summer weather conditions (May month) in India. Now the problem is whenever I closed the doors or windows (Schedule:Compact) mostly during night time, the indoor relative humidity in the zone reaches 100%. Also, this only happens when I've applied InternalGains:People for thermal comfort assessment. I am not getting what is wrong, please guide me. me.