Cooling Power...

[C21H30O2]

hey guys quick question, how much cooling power (in BTUs) would i need to cool a 3' x 3' x 6' area with a vertically mounted (no reflective hood) and air cooled 1000w MH bulb w/ remote balast. the setup will be run 12/12 during the night to further assist with temp. please no critique of my setup, just want to know how to cool her thx in advance.

p.s. this grow will be sealed with co2

 

[Guest]

3.413 btu per watt x 1000=3413 btu minimum cooling. Allow for equipment, higher ambient temperature(s) in adjacent rooms and exterior heat infiltration in late spring and summer. 5500 btu should do just fine with a little buffer for safety. Don't forget an intake and an exhaust fan.

The Super Sun II has a 3' x 3' footprint, to bad you aren't going with an air cooled hood.

Ty-Stik

 

[20kw dreams]

good answer^

 

[yamaha_1fan]

3.413 btu per watt x 1000=3413 btu minimum cooling. Allow for equipment, higher ambient temperature(s) in adjacent rooms and exterior heat infiltration in late spring and summer. 5500 btu should do just fine with a little buffer for safety. Don't forget an intake and an exhaust fan.

The Super Sun II has a 3' x 3' footprint, to bad you aren't going with an air cooled hood.

Ty-Stik

Hey Ty, is there a formula to use if aircooling the hoods? It probably gets more complicated as the effiency of air cooling is dependant on many variables

I have a 26K BTU A/C for 9K watts but they will all be air cooled.

 

[texasluv]

I have a 6500 BTU A/C unit in a room with 3- 1000W and 2- 600W lights. I keep it set to the "energy saver" setting at 76 and my temps stay between 75-81. Room is 10' x 10'. All the lights are air cooled and vented out of the room.

During the light cycle the condenser stays on about 45 minutes for every hour, during the night cycle the condenser only comes on for 15-20 minutes and hour and the unit frequently turns off since the temp is being maintained due to all the insulation I added around the room.

I would say with air cooled lights you wont need nearly as large an AC unit. According to the calculation posted earlier in this thread I would need a 14,500 BTU AC unit to keep my temps right, and the one I have is 1/2 that size and not even set to run full time. I'm willing to bet I could add another 2-3 aircooled 1000W lights without upgrading the AC unit. I should also mention that my room is built inside of a garage, framed in and insulated with fiberglass insulation and 1" thick foam R6.5 insulation. My room retains hot/cold very well due to the insulation, and is a sealed-air environment.

 

[C21H30O2]

3.413 btu per watt x 1000=3413 btu minimum cooling. Allow for equipment, higher ambient temperature(s) in adjacent rooms and exterior heat infiltration in late spring and summer. 5500 btu should do just fine with a little buffer for safety. Don't forget an intake and an exhaust fan.

The Super Sun II has a 3' x 3' footprint, to bad you aren't going with an air cooled hood.

Ty-Stik

thanks for the tip ill go with the the 5500 btu. im doing an experiment with vertical lighting hence no hood, but the light will be air cooled. thx for all the help guys.