Let's say I have a room with a HVAC system and I'm trying to keep objects in the room at a constant body temperature. My HVAC system maintains a constant air temperature, but the relative humidity in the room varies by several percent. Would the objects in the room maintain the same constant body temperature as the air temperature, despite the changes in humidity? Assume the objects are relatively small, like marbles, and don't have much heat storage, so they equilibrate in temperature relatively quickly, and also that temperature and humidity conditions are close to typical room temperature values.

  • $\begingroup$ It's possible making the air drier will cause water to evaporate from some objects and evaporatively cool them, at least temporarily. They will eventually match the air temperature again $\endgroup$
    – RC_23
    Commented Aug 22, 2023 at 13:46
  • $\begingroup$ So the objects' body temperatures could temporarily be cooler than air temperature due to evaporation? $\endgroup$
    – KAE
    Commented Aug 22, 2023 at 20:50
  • $\begingroup$ I would say so. Though I don't have specific data to back that up. $\endgroup$
    – RC_23
    Commented Aug 23, 2023 at 3:04

1 Answer 1


With the increase of humidity, the moisture does not effect non-porus objects. Porus objects on the other hand will absorb the water content of the air.

  • $\begingroup$ You haven't even mentioned temperature here, which is basically the whole question. $\endgroup$ Commented Aug 22, 2023 at 13:38
  • $\begingroup$ Because the temperature is not affected $\endgroup$
    – StefanW
    Commented Aug 22, 2023 at 13:59

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