3246Re: [hreg] Re: Nozzle suggestions for roof water spray?
- Aug 20, 2005Greetings,
There is a complete description of a system on a building 70 ft by 40 ft in
the files section on the HREG home page. One of these days I will find
time to upload the pictures of the system that Lunce kindly took for
me. We use sprinklers, not nozzles. Sprinklers are made to withstand the
At 01:09 PM 8/20/2005, you wrote:
>I understand what you are saying about covering the roof with water
>rather than a mist like on a cooling system around an AC outside
>unit. But what about a house with a ridge and moderate pitch?
>In my work doing industrial cleaning I've worked a bit with nozzles on
>shower booms. You have to balance pressure, static head, nozzle
>spacing and total gallons per minute to get a shower to work. If
>someone has already done the basic design it would help a lot.
>I have a family member with an old house and inefficient AC. But, she
>is on a community water system where she pays a flat rate for her
>water regardless the consumption. Pressure seems fine. Any
>suggestions on a roof water cooling system?
>Her house must be 60 feet or longer across the main ridge.
>By the way, it was built in 1950 on a 125 acre farm. While still
>under construction she planted some hardwoods for shade. The workers
>laughed at her. Now, those are wonderful shade trees which are a
>tremendous help on keeping the house cool. Also, the front porch
>faces South with enough depth to keep shade in the summer.
>Thanks for any nozzle suggestions.
>--- In firstname.lastname@example.org, "David Power" <dpower@h...> wrote:
> > I 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
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