Greetings,
No, we have never bothered to measure the output of the sprinklers.
They are the $1.97 plastic sprinklers that spray out a circle from home
depot. One year we did upgrade to a better quality, it was a big
mistake. The cheap ones work better in the hot sun.
The entire roof gets wet, we have a 1 in 12 pitch.
Actually, we do hear it when something goes wrong, but other than that,
we don't hear it.
Bright Blessings,
Kim
slurryguy wrote:
> During the few minutes that the sprinklers are on, do you know how
> many gallons per minute are used?
>
> How much roof surface area is covered?
>
> I assume you can hear it every time it comes on, but are so used to
> it by now you barely recognize it?
>
>
> --- In papercreters@yahoogroups.com, Garth & Kim Travis <gartht@...>
> wrote:
>> Greetings,
>> Sorry for the confusion. The originator used a public water
> supply, I
>> don't. I use well water. My well tank sits in a tin building, and
> the
>> water comes out of the ground around 80F. A piece of galvalume
> sitting
>> in the bright sun can reach temperatures in excess of 150F very
> quickly.
>> So, even water that is considered warm by human skin standards,
> can
>> still cool a roof very well.
>> Bright Blessings,
>> Kim
>>
>> ElfNori wrote:
>>> Kim has stated the water is coming from the public water source,
> which
>>> means the water lines are under ground and are the mean ground
>>> temperature which, unless you're in a geothermal zone, will be
>>> significantly cooler than summertime air temps. In Texas, near
> Houston,
>>> the average ground temperature should be somewhere between 54°
> and 64°,
>>> so the water is going to be between 25 and 40° cooler than the
> air
>>> temperature in the height of summer.
>>>
>>> ElfN
>>>
>>>
>>> ----- Original Message -----
>>> *From:* Pat <mailto:trax78245@...>
>>> *To:* papercreters@yahoogroups.com
>>> <mailto:papercreters@yahoogroups.com>
>>> *Sent:* Sunday, September 02, 2007 1:24 PM
>>> *Subject:* RE: [papercreters] Cool Roof - was - containers -
> was- Re:
>>> ugly eco home
>>>
>>> Hey Kim,
>>>
>>> You said "Put a piece of hot metal in water, it cools".
> That's true
>>> if the water is cool. If you put cool metal in hot water,
> the metal
>>> heats. Seems to me that the water on the roof would work
> only if
>>> you keep the water cooler than the temperature of the metal
> on the
>>> roof. You'd still get some cooling from evaporation of the
> water
>>> but I don't think it'd be enough to be noticeable. I am
> interested
>>> in the cool roof technique because I was thinking of putting
> the
>>> water storage tanks (from a rain catchment system) underneath
> the
>>> house where it stays fairly cool in the summer and they'd be
> out of
>>> the way there as well.
>>>
>>> Would the cool roof pictures and technical descriptions be on
> the
>>> Yahoo **/Group/*/*/ "HREG" home page? I couldn't find the
> pictures,
>>> etc on the HREG Yahoo Group home page but maybe you have to
> be a
>>> member? I'm really interested in the cool roof since I
> already have
>>> a metal roof….I'm supposing I'll need to install gutters and
> a tank
>>> to catch the run-off and then distribute it to the
> garden/flower
>>> beds/etc. but I've been wanting to build the rainwater
> catchment
>>> anyway… if I caught enough rainwater I wouldn't need to use
> as much
>>> city water, which would be a good thing! San Antonio isn't
>>> **quite** as humid as the Houston area but close so if it
> works in
>>> Houston it should work here.
>>>
>>> Your sprinklers run for 12 minutes/day total….how cool do you
> keep
>>> your house? And how dry is it? Do you notice that your
> towels and
>>> sheets stay damp? These aren't challenging questions… they're
>>> something I'd really like to know before I invest time &
> money in a
>>> system I don't know if I can live with or not. I really can't
>>> **stand** for my sheets to be damp. That's the biggest
> problem I
>>> have with leaving the windows open at night in the spring
> when it's
>>> cool….it's usually also damp and it gets everything in the
> house
>>> damp. EEEEyyyech!!! J
>>>
>>> Thanks!
>>>
>>> Pat
>>>
>>> .
>>>
>>>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
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