How many watts can you run per inline fan you have?

[ShibaSpeak]

Just like the thread title asks how many watts could you cool (All 1000 watt lights) with a single 6" or 8" inline fan like pictured below? Assume 80 degree starting air temps year round and few to no turns in the ducting itself is there a general rule of thumb?

 

[FreeRangeZombie]

I never done it with more than 1 light online but I say 265 cfm+ will cool a hid bulb. If your running more just higher the cfm I would say.

 

[mrwood]

Lot of variables here.
What do mean by cool? X degrees 12" away from glass?
What size area? Lamps do not need cooling, but we need to cool the environment for the plants.
Also, fan size (cfm, not dimensions), lamp wattage, ductwork layout etc.

In gerneral, if you have a light that 'fits' the room, and you have a fan that will provide 1 room change every 3-5 mins, you should be OK.
I have had a couple of different setups (lamps, fans), and this guideline has worked for me.

Now, if you start at 80 F, you are not going to get any colder with HIDs. You may see some high grow temperatures.

 

[ShibaSpeak]

Lot of variables here.
What do mean by cool? X degrees 12" away from glass?
What size area? Lamps do not need cooling, but we need to cool the environment for the plants.
Also, fan size (cfm, not dimensions), lamp wattage, ductwork layout etc.

In gerneral, if you have a light that 'fits' the room, and you have a fan that will provide 1 room change every 3-5 mins, you should be OK.
I have had a couple of different setups (lamps, fans), and this guideline has worked for me.

Now, if you start at 80 F, you are not going to get any colder with HIDs. You may see some high grow temperatures.

My ducting pulls in and vents outside of the flower room so their is no air exchange there. In terms of CFMs most of the fans similar to the Hydrofarm posted above have similar CFMs ~450 for the 6" IIRC

 

[ShibaSpeak]

Also assume 1000 watt lights. Im debating weather I should run 2 or 3 fans through ~6 lights.

 

[Bakatare666]

Just like the thread title asks how many watts could you cool (All 1000 watt lights) with a single 6" or 8" inline fan like pictured below? Assume 80 degree starting air temps year round and few to no turns in the ducting itself is there a general rule of thumb?

View attachment 2485996

If I were you, I would run 1 fan per light, with a duct larger than the fan, connect all ducts into one exhaust.