Using ice cold winter air to duct / cool your lights

I use Colorado winter air and it creates mad condensation as of now, both sides of ductwork , i am trying to figure it out... seems as if when i switched to heavier ducting it got worse... dripping on my plants....i use 1000 watt but regular hood not vert... hope this helps

There is only one way other than "pretreating" the OA to stop the condensation. It would take a mad jump in velocity to overcome the temperature differential that causes the condensation. Try to find another place to pull your air from or pretreat it or this issue will be bothersome and/or dangerous, as water and electricity make for dangerous bed fellows.

Peace

Asmallvoice

any time you have a drastic change in temprature your going ot get condensation if you have 3 1000w lights im assuming you have a fairly large grow area i have 1 1000w light and just pull air right out of my grow room and vent it outside the bix and seems to work well

Sounds mad dangerous..

just flip the fan. pullnfrom inside and then exhaust it. it was the only way i could solve it after spending a lot more money to replace the soggy insulation in the ducting.

what if you had a chamber that mixed outdoor/indoor air before it went to your lights?that is weatherproofed

Would it help if you turned the speed of the fan down just a thought?

You dont need to bring cold air IN...you need to get hot air OUT. Place a sufficiently powerful fan inline with the ducting leading out of the grow room, then position the existing ducting next to your lights. This will suck the hot air around your light out of the room, AND draw cooler air up to the lights, ventilating the room. When possible, keel it simple.
And yes, any time you drop air temp significantly, condensation will form. And yes, its crazy hazardous. So dont bring in cold air to begin with. If excess heat from the lights is still a problem after applying the above-mentiomed ventilation, then you need to bring in cool (not cold!) air into the room, but around waist level or lower. This allows it time to warm up as jt rises, provided you have adequate air movement. You'll just have to tinker with the air-in duct to get a size thats just right. (start with 4" and go up from there).

Mad Yo, Mad.... ok i am going to try the y duct 50/50 outside/inside air.... or possibly all inside air tonight... i might let you know how that goes....i am curious what happened during the dark period....

Ran my reflector duct with inside air last night instead of outside winter air... boom no condensation and it stayed just as cool with the 70 degree air... i am using co2 so i keep 85 temp....