Building a Pool Cooling Spray Cannon
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- čas přidán 22. 07. 2020
- Instructions for building pool cooling sprayers on a pool.
Notes:
*Works best with a variable speed pump.
*One to two sprayers will work fine for most pools - This pool is 85,000 gallons and benefits from the 4-spray configuration for more evaporation.
*Requires restricting or plugging of other ports on multi-return pipe runs.
*Raises System PSI (for our system, the filter pressure rises from 10PSI normal operating pressure to 12PSI sprayer pressure).
*Raises acid consumption slightly (not too noticeable, but we do use a little more acid as aerating the water tends to make the PH rise in a pool
*Adjust the angle of the spray by loosening the union and aiming the nozzle to the desired location in your pool.
*Video at the end doesn't have the cannons running at full power - but they can spray over the back wall when the pump RPM is high enough.
**CAUTION: Carries risk of deadheading pump and damaging plumbing if you use a fire hose nozzle that will completely close (and inadvertently gets closed while the pump is running). Recommend using two heads or leaving one return just partially restricted to reduce deadhead risk**
For our pool (if left to run without sprayers) it normally rises up over the course of a few days to 93 or 94 degree water temp during the summer months. (It sits in the sun the majority of the day.)
We run the sprayers from 8:30pm to 8:30am each night and it takes the temperature down from a typical 86 (5 degree heat gain from 1 day) down to 80 or 81 degrees by morning.
We pull water 90% from the skimmers and 10% from the main drain - to take the warmest water off the top and throw it through the air for evaporation. This leaves the colder water intact in the lower levels of the pool water column. There is a noticeable "thermocline" during the day as we don't run the pumps much in the daylight hours.
Parts list:
Fire Hose Nozzle: www.amazon.com/dp/B003D7KDKE/...
Fire Hose Nozzle Thread Adapter to NPT: www.amazon.com/dp/B07VYV41PB/...
1.5" x 10' Sch 40 PVC Pipe: Home Depot Item 100135041
1 x 45 degree street elbow: Home Depot Item 100677990
1 x 90 degree street elbow: Home Depot Item 203822499
1 x PVC Union: Home Depot Item 204202883 (This allows the sprayer to be rotated and aimed)
2 x Slip to Thread Adapter: Home Depot Item 100347535
X number of 1.5" plugs: Home Depot Item 100346681 (to restrict flow out of other returns on pipe circuit)
PVC Cement: Home Depot Item 302473009 (This is single step so no priming - and it’s clear)
Cut pipe for connections between street elbows and union using a saw. (Adjust lengths of cut pipe segments to ensure the top of the fire hose nozzle clears the water line by a couple inches.)
Glue pieces together as shown in video.
Thread into wall return.
Plug remaining returns on same return circuit.
Start Pump on low rpm and increase the rpm until the water arcs over pool but doesn't over-spray the edge of the other side of the pool. Save RPM in program and schedule it to come on during the night.
Multiple heads can be attached to single port using pvc fittings shown in video. This is not generally needed with most pools though. If anything, I would recommend putting two single sprayers on opposite ends of the pool on the same circuit for additional cooling on a typical sized residential pool.
Cheers! - Sport
Please Read the video description for parts list and more detailed instructions.
Absolutely one of the best private residence back yard swimming pools I’ve seen in my life! I know you’re all having good times in this pool! 😊
This is the guy that you see at Home Depot in a lambo
they saved their money for 12 years for the pool dude
I need a neighbor like you 😆
Another DIY guy! This is a genius idea! We live here on the surface of the sun aka SE ‘burbs of Phx AZ. I would gladly trade you your 92-94 for our 114-118 during height of Aug! 😂 we have one of these spray devices on our backyard pool but ours is much smaller level and non adjustable. Breaking the surface heat of the water really does make a diif. Also... we have same Pentair equip! Just upgraded this summer. It is very quiet and efficient. Great video / DIY
💯😎👍🏽
He is talking water temps.
You deserve more subscribers!
Been looking for a way to cool our pool done. Air tennis have been reaching 105 here in TN so the water isn't far behind. Can't wait to build this after quarantine! Thanks for the awesome instruction.
How'd the build go?
Here in utah we don't cool our pools in the summer we heat our pools in the Summer.
I grew up in Cache Valley (Northern Utah). Summer meant two weeks of bad skiing.
Same in Ontario
@@robertreese3517 At least you can skii..
that's pretty cool.
If you don’t mind me asking , what do you do for a living ? 🤔
He builds pools, duh. Big business in the suburbs of Houston.
Please do more video on building swimming pools.
They can't just build another pool. They have only one house y'know.
@@starzepher how about their neighbors? Or maybe they can get clients.
@@krv6692 I guess that could work
Thanks for anywhere great vid! Have you considered building some type of roof or coverage offer the entire pool? Would lower temps by deflecting direct sun while helping your swimmers' skin and eyes. There are even these partial tents, basically done without walls, that are used in the oil industry, and would likely be a hit with the HOA. Admittedly, easier for me to suggest than you to design and fund. Anyways, happy swims!
So if the sprayer raises acidity, that means the ph drops which can be buffered more by increasing alkalinity?
Does the spa area receive warm water inlets, or is it just solar heated? Thanks for posting such interesting videos
Spa is connected to natural gas fired pool heater (400k BTU).
How effective are these at cooling the pool? Is it a noticeable/measurable difference?
They do surprisingly well. Our pool is usually up in the 92-94 range this time of year (August). This morning the pool registered 79 at 8am (after running all night).
It’s definitely a cumulative process though. That is the result of it cooling night after night. Not a single nights drop.
My customers love keeping their automatic covers closed during the summer water temp be running around 90 lol. Love your design
Doesn't this aerate the pool and raise the acidity quite a bit?
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Cool
When’s that cookout I think my invite got lost again
what's the best of this pool and how deep is it
What do your work as ?
evaporation must hurt during summer, have a pool cover?
That’s a good question. I actually looked around for a supplier of white thermal covers to reflect sunlight during the summer months but couldn’t find one.
The next cheapest option to keep the water temperature down is to evaporate water - hence the sprayers.
Cooling towers like the “Glacier” brand pool coolers are doing the same thing in a more mechanized and discreet way at the equipment pad. If money were not a factor, a pair of cooling towers would be the way to go for this pool. But even if I installed them on my own and purchased them direct from the manufacturer (CTS), it would run upwards of $7k for the set of 15 ton units. This solution runs roughly $300.
Surprisingly though, it takes less water to maintain the pool level (even when running the sprayers) than it took to keep the grass alive when I had a full yard. In the E. Texas sun, it’s not uncommon to have to burn through 15k, 20k or even 30k gallons of water each month on bigger lots to keep the grass green in the summer. The pool loses a fraction of what it would take to keep the lawn green to evaporation.
@@BackyardLapPool another option could be using liquid blanket... I was doing some research and some people say it helps with evaporation (around 50% less), haven't tried that out but it seems like a good option if it actually works specially for pools with such a big surface
Santiago Salcedo yeah - I’ve seen that on some of the online shops. It is normally used for keeping a pool warm though in the fall / winter. In the summer, the more water that is evaporated, the lower the pool temperature. In the winter, we use the thermal covers at the end of the pool to keep the water temp up and avoid evaporation.
Use black ball like i saw one in the CZcams to cover up the lake to prevent evaporate
I had an odd connection, the 1.5 inch jet coming out( thread on outside) male not compatible with a 1.5 threaded couplings. It seemed like the threads did not match. Metric vs standard?🤷♂️ Yelp
Are you talking about the connection between the sprayer and the pool wall, or the connection between the pvc and the firehose nozzle? If it is the latter, there is a brass adapter in the parts list that converts it from NPT thread to firehose thread.
@@BackyardLapPool thanks for the follow up it's a grey looking PVC pipe 1.5 threaded male just the 1.5 inch PVC did not want to connect. The threads were not compatible. Help if you can I'd appreciate it.
It's the pipes coming back from the equipment/jet line it was we call it if they sounds right.
@@jepirules1 It might be something similar to this fitting adapter. It has what appears to be an NPT thread that expands to a nozzle thread. (Trouble Free Pool Link) www.troublefreepool.com/threads/pool-return-line-thread-mystery.143959/
I think you have to remove the adapter in order to plug a male NPT thread into the socket on the side of the pool (My best guess based on the picture on the forum link.
Cooling cannon? Let's see some pace 50s
Is your water saltwater or chlorine?
This is Chlorine. We use Trichlor up until the CYA hits 50ppm, then switch to industrial bleach to maintain 5ppm FC. It is fed through chemical injector pumps into the return line at dusk each day.
Backyard_Lap_Pool thank you for your reply, would love to see a video of your system someday!
Watch foreigners in phillipines
Spraying chlorine mist is that really good