looking for help on cooling my 1200 watt vert setup

[spaceboy]

Hi IC,

For the last year or so I have been dealing with some major heat problems. Currently have a 8x13x7 room with 2 600hps hung vertically. I've had a can fan and can 100 filter exhausting straight outside with a cfm of about 450-500 and temps have been up to 96 like that, so I added another fan to help exhaust and have it blowing into the other room with no filter about 480cfm. For intakes I have five 6" holes in the wall with flex duct going through to block out the light. Temps are still at 92 degrees.

Anyone have any idea wit I'm not able to cool this room sufficiently with 2 fans? Any other ideas...?

 

[Fly by Night]

6 in vortex exhausts 1200w bare over here. Work on ambients in the lung room, shoot for 66 degrees and you'll be pleased

Peace homie

 

[touchofgrey]

By the numbers you should at less than a 10 degree temperature rise with just the 450 cfm of filtered exhaust so it sounds like something else is going on. It would help to understand your setup a little better.

Is your can fan an 8"? Is there a lot of ductwork length or elbows in the run to the exterior? Do you have a low speed fan pointing up in the center of the doughnut?

Double check the intakes, you should have more than enough area for a passive intake. Sounds like your intake is from an adjacent room. Does that room heat up through the lights on cycle? Your temperature rise will start from intake temps so if they're above 80 you're in trouble. Another possible explanation is the room where the intakes originate is too tightly sealed to provide enough air to offset the exhaust.

 

[spaceboy]

Thank you guys replying, now I know I'm not crazy!!

The only things I can think of is maybe the window I'm blowing the 737 out of is too small (13"x4") or possibly the flex duct intake and fans are not positioned in the right spots to create circulation out of the room?

Would it be better to exhaust my large fan/filter into my lung room, which can then be exhausted outside via 6" 480cfm fan? That way I wont have to force the air out the window and can use the fan to its full potential. I could even use the filter with the smaller fan since it will only be exhausting heat from lung room. This would let me use all 737cfm straight out of the room.


Only other ideas I can think of is hooking the 6" fan up to the other basement window and pull cold air into the room. Thanks again for your input guys, here is my attempt at a blueprint of my room. Peace!

edit... I forgot to mention, the temps are about 70 in the lung room and 75-80 in the veg room so that could be another factor.

 

[Fly by Night]

Nice lookin set...switch around that exhaust like you said. Dump the 8in exhaust into the lung area. Use the 6in fans at the windows, pointed in direction based on season. Blow outside in warm weather, draw in cool air. Peace homie

 

[Phaeton]

4500 watts, 6500 CFM exhaust to the lung room. 4000 CFM from the ceiling and 2500 CFM from the floor.
Inside the room is another 5000 CFM stirring the air (5 fans @ 1000 CFM each).
The lung room heats the house in the winter and has powered exhaust in the summer, CFM varies with outside ambient.

The 2000 watt veg room has similar ratio's as does the 800 watt clone and veg room. The goal is to exhaust the room while stirring the air bottom to top.
A four degree over ambient is achieved in all three rooms as well as 3 degree spread floor to ceiling.

A CFM per watt is the minimum used here, 2 of the rooms are LED, one is HID and all are treated the same, watts are watts.