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Re: Curious on room humidification


Posted by Baz on September 27, 2000 at 04:34:07:

In Reply to: Curious on room humidification posted by Scott C. on September 27, 2000 at 03:47:12:

Scott:
I am reading this while on holiday and don't have the time for a full reply. However, I did post something on the physics of relative humidity about 2 forums ago which partly answers your question.

Room humidifiers will only be useful where you also increase the temperature of the room, unless you are in an area where ambient night temperatures are around 22-25 deg centigrade. This is because only at that temperature can air hold sufficient water vapour to be useful for airway humidification. (Check out the physics of Relative Humdity).

Interestingly, at these ambient (room) temperatures, there is very little problems with condensation, which is caused by the cooling of the tube and mask by a colder room, such that the cooler air cannot hold the amount of water which it can do at a higher temperature, and it condenses on the cooler walls of the tube/mask.

The ultimate answer to condensation is therefore not to humidify the room, but to heat it - I have done this very successfully (or to heat the environment of the tube - eg by running it under the bedclothes).

Regards
Baz

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