Misting system for sealed room

[jointventure420]

Hello...I was hoping for some assistance from anyone with experience building a 1000-2000 psi misting/fogging system...Using pumps...not dics/ultrasonic type foggers..
I'd like to be able to put a minimum of 7 gallons per hour per system into the air..
Any thoughts or experience with this type of setup...??..
Pre manufactured or otherwise...??
Btw...spaces are sealed environments

Any information would be of great help...Thank You in advance..
JV420

 

[queequeg152]

like the outdoor misting systems?

they are basically pressure washer PD pumps w/ stainless steel hoses. you would just be buying a misting pump and what ever number of emitters you need.

what are you trying to do.

 

[jointventure420]

Thank you for the quick response...!!...
I run 88- 94° Fahrenheit with 80% to 85% humidity constantly in the rooms...I've used ultrasonic type foggers(that don't keep up with the rooms and don't easily distribute the humidity evenly throughout the space) but need a system that can keep up with the humidity demands of the room...
I was hoping to use RO water to supply a pressure pump type system with misting/fogging nozzles throughout the room...
I hope this information helps...I'm trying not to buy an overpriced system that I could potentially build myself...
Thank You again...


JV420

 

[queequeg152]

the problem i see with these high pressure misting systems is upfront cost and down stream maintenance costs.

afterall they dont sell rebuild kits for pressure washer pumps for no reason... they do wear out.

are you trying to cool this area, or trying to keep humidity high?

 

[jointventure420]

Just trying to keep the rh high...overpowering the hvac and the heat from the lights takes some doing....not to concerned with financial outlay....just trying to see if it can be done in-house..., rather than giving the money to a company...

 

[HarvestMoon303]

Seems like you would have a hard time combating PM, Bud Rot in a room that's 85%+ humidity, all of the time. I've had to DEhumidify 6 plants in a sealed room before. RH was reading 99%. Could you just get your temps in control instead? Have you run 85%+ before with success? I understand that you're going for the high humidity for the high temps and VPD.

 

[Andyo]

size of room

size of room

Bigger room compared to amount of lights , ultrasonic misters would work fine then.
the extra space acts as a buffer for moisture and temperature
Assuming its well insulated.

*ive tried hard not to say this as it deviates from your question.A

 

[moses wellfleet]

What you are looking for is a greenhouse wetwall. A cellulose pad with water drawn through by a fan. Much better than sprayers for raising RH.

It requires space though. But sprayers are going to wet everything in a sealed environment. What are your average lights off temps?

My advice is discuss why you want 85% RH and related issues before you do it, try and avoid pitfalls, there will be many!

 

[Lazyman]

I think your temperature and target RH are both insane.

Pot is happiest at 78 degrees, and 40 to 50% RH. Temps too high and you're frying leaves, flowers, and making heaven for bugs.

Rh over 60% is a guaranteed way to get botrytis, powdery mildew, and lost crops.

You might as well fill that misting sysyem with gasoline for all the good it will do your plants.

 

[queequeg152]

Just trying to keep the rh high...overpowering the hvac and the heat from the lights takes some doing....not to concerned with financial outlay....just trying to see if it can be done in-house..., rather than giving the money to a company...

overpowering the hvac? what do you mean?

adding more moisture to almost saturated air will not gain you much... it will also make your hvac system work alot harder. its called latent heat.

sounds like you need additional capacity?

or is this a greenhouse? i dont really understand your situation to be honest.... if indoors, i SERIOUSLY hope you are doing this in your own home... that much humidity and heat indoors will destroy a home rather quickly.

 

[jointventure420]

Hello everyone and thank you all for the responses...the rh and temp levels are not an "experiment " at this point.. Never any problems with mold or scorched leaves...I could go on about this but I was really hoping for some insight from anyone that's built a high pressure misting/fogger system...
The wet wall system that you mentioned I am familiar with...but...room volume is a constraint...
Temps and rh do get pulled down very gradually towards the end...the hvac is properly sized to do this...the reference about overcoming the hvac system stems from having to put at least enough moisture in the air to meet the hvac's maximum dehumidification capacity...plus what the lights burn off...etc...
I appreciate all comments and insight...
Thank you all again...
JV420