3194Re: [hreg] Nozzle suggestions for roof water spray?
- Jul 31 9:12 AMI just used a couple inexpensive circular sprinklers on the test system, right now I just fire them up and let them complete one revolution wait 10 minutes and repeat. The idea is to wet the roof rather than spray a mist. The misters would have the affect of cooling the air above the roof rather than the roof it self.We will probably run a perimeter 1/2 pvc with small holes drilled in them for a stream spray then add more holes until we get complete coverage. I'm worried about nozzles clogging, the water in San Antonio is quite hard.David----- Original Message -----From: ToddSent: Saturday, July 30, 2005 9:39 PMSubject: [hreg] Nozzle suggestions for roof water spray?I have been reading with great interest the posts about using a
water mist spray to cool the roof. Any suggestions on what nozzles
to use for a 40' wide flat roof? I have a total 4000 square foot of
roof in three sections.
I read somewhere to work on 20' wide sections at a time. I also
understand from previous posts to spray 10 seconds every 10
minutes. What type nozzles?
Flat spray pattern? Round? What spacing between nozzles?
I am going to buy some .75gph nozzles for spray misting my AC
compressor unit. I probably have a functional 8gpm 40psi available
on the roof.
My thought was to use 1" Sch.40 PVC, drilled and tapped for 1/8" npt
nozzles. I haven't yet checked locally for UV resistant PVC.
At work I use pressure washers and application showers. But, I
haven't been involved in nozzle selection for a saturation like this.
Thanks for any suggestions.
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