Passive Cooling Question
Greeting all, and thank you in advance for any advice.
I live in a hot humid climate. In my large un-insulated garage I have a 16'x16'office with a window AC. This office, ceiling and walls, is insulated and dry walled. The floor is concrete slab. In this office I have built two side by side closets each with its own bookcase hidden door. Each room is 5x5x8'
Veg room has (4) t8 florescent (32w each x 4) and (1) 180w LED.
Flower Room has (1) 720w led (450w Draw), (1) large carbon filter w/460cfm fan w/6" ducting.
I am currently trying to passively cool these rooms by drawing cool air from the office (74-76 degree) into the veg room thru to the flower room into the carbon filter which exhausts back into the office. The intakes are opposite the filter/exhaust which is located as high as possible. I am running the fan at 1/2 speed. It seems that no matter how many fresh air returns, all 6" ducting, I can't seem to get the rooms below 82-84 when the lights are on.
Yes, I known, no fresh air enters the office at all, no co2 at this time. So.... I'm thinking of exhausting into the garage instead of into the office. If I exhaust air out, creating a vacuum effect, the air drawn in from outside will be 80-90 w/100% humidity. I would probably use a 4" fresh air inlet from the outside and let the rest draw thru on its own. The AC will obviously have to work harder.
I'm just wondering if anyone has any ideas or suggestions to help me get the 2 rooms below 80 degrees. I am currently running the lights at night but around here there is not a big drop
in temp or humidity. The two rooms run between 50-60 % humidity. I know bringing fresh air in is the right thing to do, just don't know how well it's going to work with the current AC. (6000btu), another idea is to draw back in from the garage instead of outside, the exhaust into the garage will act like an AC vent in there however I don't think it will cool the air that much since it's such a large un-insulated space. Well enough rambling, I'm leaving it up to the experts....
Thanks again
Techman
p.s. the plants don't seem to mind the temp as they are growing quite well, I just prefer to grow in a little cooler environment.
Greeting all, and thank you in advance for any advice.
I live in a hot humid climate. In my large un-insulated garage I have a 16'x16'office with a window AC. This office, ceiling and walls, is insulated and dry walled. The floor is concrete slab. In this office I have built two side by side closets each with its own bookcase hidden door. Each room is 5x5x8'
Veg room has (4) t8 florescent (32w each x 4) and (1) 180w LED.
Flower Room has (1) 720w led (450w Draw), (1) large carbon filter w/460cfm fan w/6" ducting.
I am currently trying to passively cool these rooms by drawing cool air from the office (74-76 degree) into the veg room thru to the flower room into the carbon filter which exhausts back into the office. The intakes are opposite the filter/exhaust which is located as high as possible. I am running the fan at 1/2 speed. It seems that no matter how many fresh air returns, all 6" ducting, I can't seem to get the rooms below 82-84 when the lights are on.
Yes, I known, no fresh air enters the office at all, no co2 at this time. So.... I'm thinking of exhausting into the garage instead of into the office. If I exhaust air out, creating a vacuum effect, the air drawn in from outside will be 80-90 w/100% humidity. I would probably use a 4" fresh air inlet from the outside and let the rest draw thru on its own. The AC will obviously have to work harder.
I'm just wondering if anyone has any ideas or suggestions to help me get the 2 rooms below 80 degrees. I am currently running the lights at night but around here there is not a big drop
in temp or humidity. The two rooms run between 50-60 % humidity. I know bringing fresh air in is the right thing to do, just don't know how well it's going to work with the current AC. (6000btu), another idea is to draw back in from the garage instead of outside, the exhaust into the garage will act like an AC vent in there however I don't think it will cool the air that much since it's such a large un-insulated space. Well enough rambling, I'm leaving it up to the experts....
Thanks again
Techman
p.s. the plants don't seem to mind the temp as they are growing quite well, I just prefer to grow in a little cooler environment.