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Passive Cooling - soaker hose on roof?
#3
Thank for your ideas Noel. I'm renting though so looking for something less expensive.

I did some more research and found an article that says sprinkling the roof for four minutes four times a day cut his A/C use almost in half! And he only sprinkled 50 percent of the roof! It lowered the temperature (not cooled)in his house significantly. He talks about BTU's and energy savings, but then he may not have a pump like those on wells or us on catchment.

http://www.doctajstutoring.com/webdoc22.htm

Most of the house is livable, but my son the nightowl isn't sleeping much at all because he has to have windows shut and no A/C (because of the noise). He was ok a couple months ago - I thought his room felt like an oven then, but now with summer it's horrible. I'll keep researching this then...

The only other option is to find someone who can work on A/C's who can rig it up so it's not in the room, attach a duct to it, run through the wall and add a thermostat. Someone posted to a DIY site on how he did this.

If there was insulation between attic and ceiling it would be on the attic floor, right? I got up there today on the ladder and didn't see any. So since the attic's cooking and doesn't have insulation, it seems cooling the roof would bring the temp down in the attic and then in the house. The living room is open beam so it gets a lot of heat too from the roof, but I'm not too bothered by it, not with our tradewinds and fans.

I'm just not sure how evaporation works in humidity. Maybe I should experiment by spraying the roof for the four minutes at intervals like the guy in the article has his sprinklers set to and see if it makes a difference. I could manage that from the ladder with a good hose nozzle.

Finding something to put on outside of windows to reflect sunlight would help too. I have outside blinds but the inside curtains in his room are very warm to the touch.

Cindy
http://www.CoconutRoads.com
"Taking you to the Heart of Hawaii"
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RE: Passive Cooling - soaker hose on roof? - by Cindy Blankenship - 07-01-2008, 06:46 PM

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