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Old 03-11-2016, 07:39 PM   #15
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No water softener needed.

They make what look like filter cartridges that are used for this.

They were originally designed for climate control systems where humidity is controlled by adding water and hard water is a problem.

These are now sold at home depot specific for coll mist systems.

They have a mineral or chemical that dissolves into the water and this material prevents the calcium and magnesium in the hard water from sticking to anything.

Not toxic either.

Cannot remember the name but should not be too difficult to find.

The misters can cool ambient air by a few degrees but the radiated heat of the sun hitting your unit is the highest heat source.

You could add a sun shield if parked for some time which is just something like a sheet of
reflective material setting on bricks on the roof or having the awning out.
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Old 03-12-2016, 12:39 AM   #16
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It got hot here today and the indoor temperature was 87*. I turned on the misters and within 20 minutes it was comfortable enough for me to fall asleep while reading.

The concept works, now to make it more efficient. Eleven mist heads is way too much. The awning collected water -- not good.

Tony, I have a blue Camco water filter on that line, but I'm interested to see if I can figure out the filter you mentioned.

My roof has 4 large Uni-Solar mono-crystalline solar panels stuck to it. They are almost black and hot to the touch on sunny days. That might help increase the inside temperature, and prevents me from covering the roof as Tony suggested.

There's another wrinkle that complicates the situation. Sena, my 18 year old capuchin monkey, likes to play on the roof and will disassemble anything that will easily come apart.
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Old 03-12-2016, 08:06 AM   #17
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Barb, what brand misters are you using?
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Old 03-12-2016, 09:01 AM   #18
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Quote:
Originally Posted by MSHappyCampers View Post
Barb, what brand misters are you using?
Artic Cove -- purchased at Home Depot. From what I have seen on various websites most misters are pretty much the same. The mister heads are a small brass piece with a hole in the middle that is threaded to fit into tubing.
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Old 03-12-2016, 10:01 AM   #19
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The solar panels are collecting part of the heat.

If the solar panels are glued directly to roof then any heat on back is transfered.

If they can be elevated to allow air flow then lots can be blocked.

Or a heat blocker can be added.

When we built our shop the insulation as only about 1/8 inch thick foam with a foil film that was a heat blocker

When rolled out on sunny day the reflected heat was amazing.

Something like that could be placed under your panels to reflect the heat back and away from roof but be certian the panels ate okay with that.
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Old 03-12-2016, 02:53 PM   #20
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Quote:
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Artic Cove -- purchased at Home Depot. From what I have seen on various websites most misters are pretty much the same. The mister heads are a small brass piece with a hole in the middle that is threaded to fit into tubing.

I can't see anywhere that it shows the flow rate per nozzle. I looked on the Artic Cove site and also Home Depot! Where did you find that information?

I found some others that did say about 1/2 gallon per hour.
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Old 03-12-2016, 03:42 PM   #21
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Quote:
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It got hot here today and the indoor temperature was 87*. I turned on the misters and within 20 minutes it was comfortable enough for me to fall asleep while reading.

The concept works, now to make it more efficient. Eleven mist heads is way too much. The awning collected water -- not good.

Tony, I have a blue Camco water filter on that line, but I'm interested to see if I can figure out the filter you mentioned.

My roof has 4 large Uni-Solar mono-crystalline solar panels stuck to it. They are almost black and hot to the touch on sunny days. That might help increase the inside temperature, and prevents me from covering the roof as Tony suggested.

There's another wrinkle that complicates the situation. Sena, my 18 year old capuchin monkey, likes to play on the roof and will disassemble anything that will easily come apart.
87 degrees and then 20 minutes later, able to fall asleep is not very scientific.

The proof is in the numbers.
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Old 03-14-2016, 10:51 AM   #22
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Experimenting with misters to cool Class C

Quote:
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87 degrees and then 20 minutes later, able to fall asleep is not very scientific.

The proof is in the numbers.

The proof is in the slumbers.
Ideas followed by trial and error experimentation is a great science. I have had success with many undocumented kluges.
Barb, I think you are on the right course and will get things tweaked very well. Can't wait to see it!


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Old 03-14-2016, 12:43 PM   #23
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Always fun to learn when folks state cannot be done.

They thought the earth was flat..;-)
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Old 03-14-2016, 08:47 PM   #24
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Here are some things you may need

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Old 03-15-2016, 09:20 AM   #25
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The solar panels are collecting part of the heat.

If the solar panels are glued directly to roof then any heat on back is transfered.

If they can be elevated to allow air flow then lots can be blocked.

Or a heat blocker can be added.

When we built our shop the insulation as only about 1/8 inch thick foam with a foil film that was a heat blocker

When rolled out on sunny day the reflected heat was amazing.

Something like that could be placed under your panels to reflect the heat back and away from roof but be certian the panels ate okay with that.
The solar panels are a peel and stick variety. I had to lift the edge of one when I swapped out a standard vent for a Max-air fan vent. They are stuck tight!

This is all a learning process. Five years ago when I placed them up there I had no idea that I'd spend this much time in the desert. And this has been a very warm winter for Phoenix. I'm about 10 days from a geographic solution. Time to head north!
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Old 03-15-2016, 09:32 AM   #26
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Are you talking about 1/2 gallon for all 11 nozzles or just one? If you mean all 11 then that means 5.8 ozs./hour. I wish you a lot of luck, but that doesn't seem like much evaporative cooling. JMO
Yes, 11 is WAY too many misters. It helped to cool us quickly, but at 5.5 gallons of water per hour it was water cooling, not mist cooling. It worked where we are now connected to city water, but I'm hoping for a boondocking climate control solution. I'm thinking 3-4 mister heads and starting them before we get so hot will work better.
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Old 03-15-2016, 09:45 AM   #27
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Quote:
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I can't see anywhere that it shows the flow rate per nozzle. I looked on the Artic Cove site and also Home Depot! Where did you find that information?

I found some others that did say about 1/2 gallon per hour.
I'm assuming that all mister heads are about the same flow rate. I don't know how much water pressure affects the flow rate. They are now connected to city water with a Camco flow restricter at the faucet head. When I put the flow restricter next to the Moho I had a cheap water hose explode. We're in a friend's backyard, not an RV park. I put a Y on the faucet that is used by others. I often have to learn things the expensive way
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Old 03-15-2016, 10:46 AM   #28
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I just ordered 4 pvc couplers, a calcium inhibitor and a garden hose fitting from this company

Home page - Patio Misting Systems, Mist Fans, Fog Systems: Aero Mist Outdoor Mist Systems, Outdoor Misting Kit

They sell everything by the piece. I'll be able to place the mister heads at the distance I want them.
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