Air cooled lites

stoneric · 05-22-2011, 03:32 PM

Should I have air blowing towards bulb or with?

farmergiles · 05-22-2011, 03:54 PM

Quote:

Originally Posted by stoneric

Should I have air blowing towards bulb or with?

You lost me...

Ideally you'd have air extracted from the light hood/fixture to remove the heat.

However even a fan pointed at the light will cool it and prevent hotspots though this will not lower the temps in the whole growspace.

stoneric · 05-22-2011, 04:34 PM

My intake fan takes air from an adjoining room and blows into the hood while I have an exhaust fan on the other end venting into my attic. I was wondering how the fans should be situated. I'm ignorant on so much shit my questions probably seem childlike.

farmergiles · 05-22-2011, 04:50 PM

Extract air from the light if possible, remove the heat.

valyard · 05-24-2011, 12:41 AM

Hello Stoneric,

Regarding your lights; are they standard hoods, or are you using 'cool tubes'?
If the latter, I would recommend blowing the air through the tubes rather than sucking the heat out, that way you are putting considerably less heat related stress on the internal workings of your fan.

Regards,
Val

stoneric · 05-24-2011, 01:32 PM

It's a standard hood. I have a fan blowing thru one end and another exhausting from the other. My question was whether it mattered which end of the lite the fans were situated. I'm re-configuring my room for the 100th time and I was going to switch the fans around so I'll be exhausting from the opposite end of the lite. It was a dumb ass question on my part.

fenderbender · 05-24-2011, 02:24 PM

i dont know if you answered you own question or not,

Do you only have one fan and are wondering where to put it? I believe fans are better at pulling air than pushing it, so you should put it on the exhaust part.

farmergiles · 05-25-2011, 02:22 AM

It depends on your fan design whether it pushes or pulls better but it probably doesn't matter as long as the duct doesn't have too convoluted a route.

Again, it depends on the fan if it will be ok with pulling the hotter air from the light but most fans sold for this purpose should be fine- the manufactures spec (if you have it) should state temperature tolerances. I've known inline fans to have worked ok like this for years.

05-22-2011, 03:32 PM	#1 (permalink)
stoneric bougeman Join Date: Aug 2004 Posts: 5,646 Thanks: 704 Thanked 1,512 Times in 1,067 Posts	Air cooled lites Should I have air blowing towards bulb or with?

05-22-2011, 04:50 PM	#4 (permalink)
farmergiles Yahookan Join Date: Sep 2006 Location: Sick of the hatred and the lies Posts: 7,807 Thanks: 2,285 Thanked 3,750 Times in 2,554 Posts	Extract air from the light if possible, remove the heat. __________________ Cultivate a stoic calmness *Fuck the Monkeys* Every Kind of Vice

05-25-2011, 02:22 AM	#8 (permalink)
farmergiles Yahookan Join Date: Sep 2006 Location: Sick of the hatred and the lies Posts: 7,807 Thanks: 2,285 Thanked 3,750 Times in 2,554 Posts	It depends on your fan design whether it pushes or pulls better but it probably doesn't matter as long as the duct doesn't have too convoluted a route. Again, it depends on the fan if it will be ok with pulling the hotter air from the light but most fans sold for this purpose should be fine- the manufactures spec (if you have it) should state temperature tolerances. I've known inline fans to have worked ok like this for years. __________________ Cultivate a stoic calmness *Fuck the Monkeys* Every Kind of Vice

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05-22-2011, 04:34 PM	#3 (permalink)
stoneric bougeman Join Date: Aug 2004 Posts: 5,646 Thanks: 704 Thanked 1,512 Times in 1,067 Posts	My intake fan takes air from an adjoining room and blows into the hood while I have an exhaust fan on the other end venting into my attic. I was wondering how the fans should be situated. I'm ignorant on so much shit my questions probably seem childlike.

05-24-2011, 12:41 AM	#5 (permalink)
valyard YaHookan Join Date: Nov 2010 Posts: 17 Thanks: 13 Thanked 6 Times in 6 Posts	Hello Stoneric, Regarding your lights; are they standard hoods, or are you using 'cool tubes'? If the latter, I would recommend blowing the air through the tubes rather than sucking the heat out, that way you are putting considerably less heat related stress on the internal workings of your fan. Regards, Val

05-24-2011, 01:32 PM	#6 (permalink)
stoneric bougeman Join Date: Aug 2004 Posts: 5,646 Thanks: 704 Thanked 1,512 Times in 1,067 Posts	It's a standard hood. I have a fan blowing thru one end and another exhausting from the other. My question was whether it mattered which end of the lite the fans were situated. I'm re-configuring my room for the 100th time and I was going to switch the fans around so I'll be exhausting from the opposite end of the lite. It was a dumb ass question on my part.

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