Need Help with Greenhouse Sprinkler System
 

I am having a difficult time finding a 1/2 inch overhead sprinkler that will spray a mist instead of droplets of water. Looking for heads that will cover a 20 foot diameter circle to dispense a fine mist pattern. If any of you have experience with such an emitter system, I would appreciate a link to such products.

Thanks in advance,

Raybo:)

Look here and see what they have.
You may need to get a drill and tap to connect then to 1/2 line.
Remember radius if 1/2 the diameter.so if you want a 20 diameter you will be looking for a 10 foot radius.

[url]https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&uact=8&ved=0ahUKEwj8j5-Z7r_aAhXJna0KHctUChQQjBAIRTAD&url=https%3A%2F%2Fwww.sprinklerwarehouse.com%2FDrip-Irrigation-s%2F24.htm&usg=AOvVaw1Wn1Os3viLjBfULqWtb--n[/url]

Worth,

Thanks for the link. It looks like they only have foggers which will distribute over a 4 foot diameter pattern. I need something which will emit over a 20 foot diameter. Mini foggers won't work - need something more "industrial strength" to pump out a large mist pattern.

Raybo:)

Keep looking around the site I found one in there some place that would do 20 feet but cant find it again.:evil:
Worth

Worth,

The only one I could find at this store is this one:

[url]http://www.sprinklerwarehouse.com/Fogger-p/07-054-b05.htm[/url]

I will keep looking, as you suggest.

Raybo:)

The one I saw was a mister I cant find anymore.
One thing is if you are looking for a true foggier it is going to be hard to push a fog that far.
The laws of physics are against you.
Can you not just put the heads closer together?
Add more pipe?

Worth

Worth,

"Fogger" is probably the wrong phrase. We need to mist chilled water onto the plants from overhead without having to run hundreds of feet of parallel pipe - so the 10 foot radius (20 foot diameter) seemed to be the optimum design goal. We need "mist" - not large droplets of water landing on the plants. (I keep thinking of your fire suppression work you did up on the North Slope some years ago...)

Raybo:)

I will keep looking for you and see what I can cook up.

Worth

Raybo, I hope you have "soft water". To maintain a mist with a 20' radius is a tall order in a sustained situation as minerals build up inside the emitters.

p.s. Why isn't Marnar world famous?

Charley,

The system will be on City water, so particulate/mineral filtration should be fine.

Regarding MarNar, I just planted out a pair of MarNar F7s last week along with 22 other tomato plants (Dwarf Metallica, Dona, Goose Creek, Carmello, etc.)

Raybo:D

Small particles of water are much more difficult to throw 20' through the air. Mist doesn't really move unless carried by air.

I don't know how small of a mist you need, but about 35 psi is required to make the smallest particle size of mist. A shallow well pump does the trick cheaply. But that mist would need a fan or some other force to move it around.

Try putting spray nozzles in the search box at McMaster-Carr if this link doesn't work.

[URL]https://www.mcmaster.com/#spray-nozzles/=1cg4nss[/URL]

This may be way off base, but I don't understand why you would want mist in your greenhouse, when high humidity creates fertile breeding grounds for all sorts of fungi. I use drip irrigation.

Just wondering...

Steve

Good lord I got lost in a bunch of technical information on misting nozzles I could look at for hours.:lol:

Google pictures of water misting in greenhouses or something.
In none of the pictures did I see anything 20 feet apart.

Not for sure what you want to do with the system or its purpose.



Worth

You might look into micro sprayers that may be what your wanting or could use.
They will put out the diameter you want.
I have used them before too.

One other thing you will want o go to with what they call head to head coverage for most things to get a full coverage.
This means you will still have to go to the heads being around ten feet apart or you will end up with dry spots.
I put my yard sprinklers in with head to head coverage.

With a mist system the stuff just sort of floats around before it hits the plants depending on how high up the heads are.
The water mist I used for fire protection was running off 2000 PSI air tanks.



[URL]http://www.sprinklerwarehouse.com/Micro-Sprayers-s/7841.htm[/URL]

Here are misters attached to fans at Busch Gardens:
[IMG]http://www.eyesofsilverblue.com/wp-content/uploads/2012/06/mistermister.jpg[/IMG]

[url]https://www.aquamisters.com/[/url]

[IMG]https://i.ytimg.com/vi/kuqUtKK5tXY/hqdefault.jpg[/IMG]

Thanks folks for the links - they are very helpful.

Steve - have you ever been in a Greenhouse in Sacramento in August? The project is to mist the plants with cooled water so they wont burn up in the intense heat.

Raybo;)

You need one of these: [url]https://i.ytimg.com/vi/pvb2KTjR5Gs/maxresdefault.jpg[/url]

Cole,

The fan misters in the photo at Bush Gardens is Exactly what we are trying to replicate. The photo link is labeled "mistermister" but a web search turns up no Company with that name. Any idea of where I might source something like these?

Thanks,

Raybo:)

Honestly, I just remember them because I used to live down the street from Busch Gardens and usually had a season pass. I found that pic with google images.

Try this link and explore the different URLs:
[url]https://www.google.com/search?tbm=isch&source=hp&biw=1280&bih=902&ei=kinWWq2mN8qSjwTT_IKICA&q=crowd+mister+cooling+system&oq=crowd+mister+cooling+system&gs_l=img.3...934.7320.0.7620.27.17.0.0.0.0.490.490.4-1.1.0....0...1ac.1.64.img..26.1.490...0.0.6r2WmpFRyEU[/url]

[QUOTE=rnewste;695661]Thanks folks for the links - they are very helpful.

Steve - have you ever been in a Greenhouse in Sacramento in August? The project is to mist the plants with cooled water so they wont burn up in the intense heat.

Raybo;)[/QUOTE]
Got it. I guess moisture from misting would evaporate quickly. (The closest I've been is Huntington Beach, where I lived for a while, and no greenhouse.)

I even have problems with heat in my greenhouse in Norway.

Steve

This might be what you want. Page 37, the Netafim vibro-net misters. Most likely would hang them from 1/2 tubing. You will also need a punch tool to make the hole in the tubing to snap the dripper assembly into it. You would have to hang at least three runs of tubing on 5 foot centers to get 20' of coverage width, as the largest diameter of coverage is 4-6'. If you wanted to guarantee full coverage, you would do for lines on 5' centers.
You would hang a mister assembly every 3 feet along each line. [URL="https://www.rainfloirrigation.com/wp-content/uploads/2017/02/Pages-37-38.pdf"]https://www.rainfloirrigation.com/wp-content/uploads/2017/02/Pages-37-38.pdf[/URL]

Netafim also has true fogger: [URL="http://www.netafimusa.com/greenhouse/products/propagation/foggers/"]http://www.netafimusa.com/greenhouse/products/propagation/foggers/[/URL] This link has layout and specs for spacing etc.

Video of vibro-net mister:
[URL="https://www.youtube.com/watch?v=as_V0X7j-KE"]https://www.youtube.com/watch?v=as_V0X7j-KE[/URL]

Video of coolnet fogger: [URL="https://www.youtube.com/watch?v=PQOPuBsSwfw"]https://www.youtube.com/watch?v=PQOPuBsSwfw[/URL]

Pureharvest,

Those links are very helpful. The CoolNET solution is exactly what would fit the project. Just need to calculate head spacing to give the necessary coverage.:yes:

Thank you,

Raybo:D

I don't know what generation Marnar you sent me, but it was superb, and I am growing out seeds I saved from the ones you sent me. Sorry about the subject jump on your sprinkler thread.


[QUOTE=rnewste;695562]Charley,

The system will be on City water, so particulate/mineral filtration should be fine.

Regarding MarNar, I just planted out a pair of MarNar F7s last week along with 22 other tomato plants (Dwarf Metallica, Dona, Goose Creek, Carmello, etc.)

Raybo:D[/QUOTE]