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Offlineblurt
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Registered: 03/14/10
Posts: 149
Last seen: 11 years, 3 months
LEDs and heat.
    #14213347 - 03/31/11 04:45 AM (12 years, 9 months ago)

Now I know from adverts that LEDs do not produce much heat however how much is not much  heat. Is there any maths to it?

If I have a 200x200x200/cm room and im going to kit it out to the max, hypothetically (so no moaning and telling me it's not a good idea or whatever, be productive)

Total LEDs 55M (120 per metre)
Total wattage 869w

74 Lumens per Watt
9 Lumens per LED



Would anybody be able to take a guess at the heat coming off of that? Not including FAE or coolers ect.

Or is it going to be the same heat as a 1000w MH? Therefore pointless....


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InvisibleDoc_T
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Posts: 42,395
Loc: Colorado Flag
Re: LEDs and heat. [Re: blurt]
    #14213349 - 03/31/11 04:48 AM (12 years, 9 months ago)

55,000 LEDs? :whoa:

Far less heat than any other source of lighting, for sure.

But,

Your power supply is going to be white hot.


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Offlineblurt
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Re: LEDs and heat. [Re: Doc_T]
    #14213439 - 03/31/11 05:43 AM (12 years, 9 months ago)

Its actually 6600 LEDs so total just under 60,000 lumens. The wattage come to just under 1000. Its not a huge deal but heat wise what do ya reckon?


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InvisibleDoc_T
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Re: LEDs and heat. [Re: blurt]
    #14213452 - 03/31/11 05:50 AM (12 years, 9 months ago)

About like having 1000 watts of anything else going, I think.
Some heat but not near as much as other sorts of lighting.

Is this a serious thing? Or just brainstorming?


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You make it all possible. Doesn't it feel good?


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Offlineblurt
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Re: LEDs and heat. [Re: Doc_T]
    #14213634 - 03/31/11 07:39 AM (12 years, 9 months ago)

Ive been looking at the idea of hi-intensity LEDS aftertalking to ekyldog, found the supplier to buy them in to the UK in bulk to sell on. So will be soon using these for mushrooms. However, after thinking of an old idea of LEDs & SOG, the heat is the issue you see because my mushroom room stays around 20C with a cold space and AC so there are no severe IR sigs. If I was able to keep another room between 20c-30c then happy days.

So before I wasable to attempt it I would like to get an idea of what I would be dealing with heat wise. Once I have the rolls of LEDs I can just test before selling on.


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InvisibleDoc_T
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Re: LEDs and heat. [Re: blurt]
    #14213641 - 03/31/11 07:42 AM (12 years, 9 months ago)

It's a plausible amount of heat, I don't think you'll get spotted by satellite or anything.


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Offlineiluvfungi
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Re: LEDs and heat. [Re: blurt]
    #14213725 - 03/31/11 08:12 AM (12 years, 9 months ago)

Quote:

blurt said:
Now I know from adverts that LEDs do not produce much heat however how much is not much  heat. Is there any maths to it?

If I have a 200x200x200/cm room and im going to kit it out to the max, hypothetically (so no moaning and telling me it's not a good idea or whatever, be productive)

Total LEDs 55M (120 per metre)
Total wattage 869w

74 Lumens per Watt
9 Lumens per LED



Would anybody be able to take a guess at the heat coming off of that? Not including FAE or coolers ect.

Or is it going to be the same heat as a 1000w MH? Therefore pointless....




I ran a 120W Led light with 1W Led's and a 300W unit with 3W leds.
The 300W unit was not crazy hot, but much warmer then the 120W.
It's hard to compare, but the 3W LED unit with 300W raised ambient temps by about 5-10 degrees. VS. 800W of MH, it's cooler.

I run 3 1000W HPS in my grow room now, if I had 3 600W LEDS it would less hot, and more light to the plants.


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Offlineblurt
The New Guy
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Registered: 03/14/10
Posts: 149
Last seen: 11 years, 3 months
Re: LEDs and heat. [Re: iluvfungi]
    #14213821 - 03/31/11 08:51 AM (12 years, 9 months ago)

Quote:

iluvfungi said:
Quote:

blurt said:
Now I know from adverts that LEDs do not produce much heat however how much is not much  heat. Is there any maths to it?

If I have a 200x200x200/cm room and im going to kit it out to the max, hypothetically (so no moaning and telling me it's not a good idea or whatever, be productive)

Total LEDs 55M (120 per metre)
Total wattage 869w

74 Lumens per Watt
9 Lumens per LED



Would anybody be able to take a guess at the heat coming off of that? Not including FAE or coolers ect.

Or is it going to be the same heat as a 1000w MH? Therefore pointless....




I ran a 120W Led light with 1W Led's and a 300W unit with 3W leds.
The 300W unit was not crazy hot, but much warmer then the 120W.
It's hard to compare, but the 3W LED unit with 300W raised ambient temps by about 5-10 degrees. VS. 800W of MH, it's cooler.

I run 3 1000W HPS in my grow room now, if I had 3 600W LEDS it would less hot, and more light to the plants.






Thats exactly what I wanted to know, I nice simple comparison thanks. Doc_T, its not so much satalite but when there are regular reports of rabbit hutches getting raided cause of the IR sigs then that would really suck also my mushroom lab is in-line with choppers and very close to the police station. Im pretty sure there is no local FLIR but id rather not take that risk for a "hobby"


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