How to lower temp in tent

KonopCh

KonopCh

Well-Known Member
I have temps in my tent 29-33°C. Mostly around 31°C. Room temp is 27-29°C.
I have 280W of COBs, 273 m3/h fan on carbon filter, 185 m3/h fan from room to tent (I've tried from tent to room, but temps are higher) and a big 50cm oscilating fan inside tent.

If I move MW driver (HLG-240H-C1050A) from inside to outside of tent... would be any difference in heat in my small tent (80x80cm)? I've read they put around 20W of heat...

Any other tricks to lower temp below 30°C?
 
chemphlegm

chemphlegm

Well-Known Member
VegasWinner said:
, and just adding AC does not remove heat it makes higher RH%
Click to expand...
a correctly operating air conditioner most definitely removes humidity from the air in the room it is cooling, this is one way it works.



pulls the air into the system and runs it over refrigerant-filled coils to cool the air. After going through the AC process, the cool air is sent back to the room(s) while the heat extracted from the air is expelled to the outdoors.

The evaporator coil dehumidifies the air in the room by pulling in and removing condensation in the room’s air before replacing it with dry, cooler air. ever wonder where the drip drip comes from? I can pull five gallons out with just my ac unit some days with a dehuey operating.
 
KonopCh

KonopCh

Well-Known Member
VegasWinner said:
best to pull air from inside tent; passive drawing from room; and exhaust outside the room. exhausting back into the same room means you have to remove the heat from the room, and just adding AC does not remove heat it makes higher RH% Air is like rope best to pull than push, easier on the back and brain.
Click to expand...
You didn't read what I wrote, did you?
My fan from carbon filter goes from tent ceiling through window outside of house. So I have only 2 holes at the bottom of tent. One is passive intake, other is fan blowing room air (27-29°C) into tent.
Even with this setup I have (room air into tent), I think temp inside tent must be at 27-29°C, but it's not.
 
ANC

ANC

Well-Known Member
You will need to dial the room temp lower so the light make up the balance of the heat required.
Cooling largely depends on the gradient or difference between liquid or gas molecules and the object being cooled.
 
V

VegasWinner

Well-Known Member
KonopCh said:
You didn't read what I wrote, did you?
My fan from carbon filter goes from tent ceiling through window outside of house. So I have only 2 holes at the bottom of tent. One is passive intake, other is fan blowing room air (27-29°C) into tent.
Even with this setup I have (room air into tent), I think temp inside tent must be at 27-29°C, but it's not.
Click to expand...
Yeah I read what you wrote want to fight now. Just WoW. Try treating air like ropw and stop pushing it you did not read. I have no cooling problems you do. Good luck with that attitude
 
canadian1969

canadian1969

Well-Known Member
some guy had a good thread on water cooled COBs and people started to talk about chillers. Dunno if that would help here or not. fwiw
 
visajoe1

visajoe1

Well-Known Member
this isnt rocket science here. there is only two ways to cool the tent, and doing both would be best: cool the room air with a/c, and/or get a higher cmm fan for the tent. your 273cmm fan isnt pulling that through the carbon filter, but it should still be plenty, unless your tent is too large for it. how big is your tent? do you have a fan inside the tent to circulate the air?
 
SPLFreak808

SPLFreak808

Well-Known Member
30c/86f is actually not bad at all for vegging with cobs, just slap a mini-split in there for flower or move more air.
 
KonopCh

KonopCh

Well-Known Member
visajoe1 said:
this isnt rocket science here. there is only two ways to cool the tent, and doing both would be best: cool the room air with a/c, and/or get a higher cmm fan for the tent. your 273cmm fan isnt pulling that through the carbon filter, but it should still be plenty, unless your tent is too large for it. how big is your tent? do you have a fan inside the tent to circulate the air?
Click to expand...
Tent is 80x80 cm. So when I was buying fans I've been told that's plenty and more than enough.
Yes, I have 50cm fan inside tent. Really big as you can compare to my tent.
 
visajoe1

visajoe1

Well-Known Member
KonopCh said:
Tent is 80x80 cm. So when I was buying fans I've been told that's plenty and more than enough.
Yes, I have 50cm fan inside tent. Really big as you can compare to my tent.
Click to expand...
you have plenty of air flow for the size of your tent. you just need to cool your room
 
mefunky

mefunky

Well-Known Member
KonopCh said:
I have temps in my tent 29-33°C. Mostly around 31°C. Room temp is 27-29°C.
I have 280W of COBs, 273 m3/h fan on carbon filter, 185 m3/h fan from room to tent (I've tried from tent to room, but temps are higher) and a big 50cm oscilating fan inside tent.

If I move MW driver (HLG-240H-C1050A) from inside to outside of tent... would be any difference in heat in my small tent (80x80cm)? I've read they put around 20W of heat...

Any other tricks to lower temp below 30°C?
Click to expand...
Making the drivers remote will help a lot with heat. I'm running 300 watts of cobs in a 2x4 tent and I have a hard time keeping my Temps up sometimes, gets up to about 81f and my exhaust fan is on low. Ambient room temp is 74. Hope you get it figured out man good luck.
 
Randomblame

Randomblame

Well-Known Member
You could also use CO² and live with the warmth.
3-5°C temperature difference to ambient is normal.
Taking the driver out of the tent can help a bit and when the tent is full, temps can get even better.
And CO² would make the plants more tolerant against heat.
The lights just run at night can also help a lot.
 

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KonopCh

KonopCh

Well-Known Member
AC and CO2 is last option. As I can see (@Randomblame) I don't need to worry about 30-31°C. Higher RH (min. 70%) would be optimal with that temp.

I rewired my light fixture and put MW driver outside tent. It's at 52°C and little lower on sides of driver. Is that normal? When driver was it tent I didn't notice that much heat (maybe because of ambient temp?).
 
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Randomblame

Randomblame

Well-Known Member
KonopCh said:
AC and CO2 is last option. As I can see (@Randomblame) I don't need to worry about 30-31°C. Higher RH (min. 70%) would be optimal with that temp.

I rewired my light fixture and put MW driver outside tent. It's at 52°C and little lower on sides of driver. Is that normal? When driver was it tent I didn't notice that much heat (maybe because of ambient temp?).
Click to expand...
110 or 220v? The driver runs hotter at 110v because of the effiency difference(datasheet).
 
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