(09-16-2014, 11:57 AM)Galactus Wrote: I know that the water needs to be heated to get the vapor in the air to maintain the humidity, but I never found the air to be "heated", the air always seems to me to be about the rooms temperature heat. In the winter if the bedroom is cold the air is cold and when hot in the summer it seems hot. I find when I turn up the humidifier it gets moister but not really hotter. Am I missing the boat there? Can only describe how it feels to me. But if my info is incorrect please feel free to correct me so no one gets wrong info.
From the laws of physics and what little ASHRAE info I have been exposed to down through the years, when you add specific heat energy to water and it causes the water to evaporate, the heat you applied is contained in the water vapor as latent heat. That means it cannot be measured with a thermometer and will not feel any warmer when breathed. It just increases the total energy contained in the air without increasing its specific temperature.
As a side note, people with lung deficiency problems will not like moisture laden air since it contains less O2 per unit volume.