Aircooling lamp's on the cheap
Posted 22 March 2007 - 09:48 PM
Posted 22 March 2007 - 10:00 PM
Posted 06 April 2007 - 09:33 PM
Posted 03 May 2007 - 01:24 PM
Posted 03 May 2007 - 01:37 PM
I heard that sucking is worse as the hot air is sucked thro the fan, which can damage it. Dont know if this is true or not tho!
no, this is not true as the fans rvk etc, are designed to suck or extract hot/stale/smelly whatever air, that is why they are called extractor fans, also they are designed to stay on or be able to cope with staying on 24/7 365.
and i maybe wrong but i always thought laws of physics states pulling is stronger than pushing, and sucking is stronger or more efficient than blowing.
just my 2penneths worth.
i have my fans both extracting, one extracts heat from hood, and other bigger one sucks through carbon filter
edited for badspell
Edited by Merlin, 03 May 2007 - 01:38 PM.
Posted 23 July 2008 - 07:40 PM
Ducting air in from outside makes a huge difference to cooling ability ( the easiest way is normally through a wall vent or through the ceiling to a vent in the loft under the facia boards) The only thing to watch there is that the air goes through some sort of a filter to ensure its not damp for obvious reasons.
we've toyed with a few different setups over the years just to see what can be done really, one of the best was pumping the nutrient soloution through a water jacket around the reflector then out through an old intercooler and back around again, might aswell put the soloution to use and the tubing needed to cool the lamp with water is soooo much smaller than with air!
another interesting way is a hiltsch tube cooler, easy to make if your handy on a mill and to be honest just uber cool to play with while your waiting for stuff to grow B) you need a compressor which is a bit of a bumer but the plus side is the tube can cool well into the minus figures so you can keep your grow room at exactly the temps you want using the two outputs and the light as heaters/chillers
Has anyone got any idea what the led panels are like on the heat they kick out?
Posted 15 January 2009 - 12:59 PM
Hi thre im on my first 250 w set up ! Have been having some pritty high temps 30+ OMG! I know.But thats when my grow tent /plastic greenhose is fully zipped up.I was going to buy an air cooled tube thingy for the summer months as ive now managed to get temps around 26.0c But im deffinately going to Maplins to get me an PC fan, are there both fans for blowing and sucking?, or do you just use the same fan, and use the other end.? For blowing and sucking .will let you know how i get on thanks.
see page 2 for more info
this is how i solved mine, cheap and easy,
the first thing to do is mark a 3" circle on top of your lamp
and drill it full of hole's (the more the better) and mount a
4" computer fan over the hole's and screw it to the metal reflector
make sure it's sucking air out not blowing in
a glass shield is very usefull if you use this method
the pic's will explain the rest
hope this help's
Posted 09 June 2009 - 07:52 AM
would have never thought wood was safe but thanks to this thread I have put it to use.
this is a 400w mh construction light $25 usd that was taken apart and converted to remote ballast.
Posted 09 June 2009 - 08:00 AM
It works really freaking well. Im surprised. you can put your hands directly on the glass and its barely even warm.. absolutely no heat can be felt inches bellow the glass. i think I might be able to put this 5inches away from plants without even breaking a sweat.
the total cost for the used light and home made reflector came to 40 usd. not bad. thats about 25 British pounds.
If you want to see more chip DIY goodness... check out my grow. its going on right now. =D
Posted 28 June 2009 - 05:31 PM
Posted 21 July 2009 - 11:10 PM
But I'd use an old tower PC PSU. Its low output but can handle a lot of fans as a fan uses a fraction of the power of the CPU.
Alternativly you could use a cheap variable plug in transformer from your local supermarket, you can vary the speed on these as well, probably good for 2 to 3 fans each.
Posted 16 November 2012 - 08:22 PM
Posted 22 January 2013 - 04:53 PM
all i did to cool my 600w hps is screw a 80mm case fan directly under the bulb to the socket/fitting and with the addition of another fan (200mm) blowing across the canopy i can have my light as close as 10" in a 4ft x 1ft cupboard and keep temps at a steady 75 degrees!
Hope this helps steer some people away from wasting money on cool tubes. The way i see it if your struggling to keep temps low your better off getting a lower wattage bulb than a cool tube, as you would most likely end up with roughly the same lumen output anyway. I know a new light kit is more expensive than a cool tube but it would save you money on electric in the long run.
hopefully you can all make sense of this as it sounded right in my head
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