*****
It is a simple evaporative device, dribbling small amounts of water across absorbent panels, and as the water evaporates, the air around it is cooled (Latent heat of vapourisation, I seem to recall from Physics classes, from 40 years ago) then sucking the cooled air down inside the house, and pumping it around. You need to have an open door or window to allow the moist air to escape. So, it has a large fan, the evaporative panel, a (small) water supply, and lots of dedicated air ducting. Pretty damned good, and requires none of the nasty chemicals empoyed in Air Conditioning.Appropriate technology rules, OK?
1 comment:
Thanks Anni.
Canberra was cooler today than yesterday, but still clear and dry. A 2 minute squally shower was all they got last evening; not enough to cool the air, even.
This morning, I was watching the Weather Bureau automatic reporting for Moss Vale, and thought it must have been faulty. Anyway, we came back this afternoon, to a lovely misty evening.
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