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is anyone using 100watt or high single diode leds yet?

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camplo

New member
Is anyone using 100watt or higher, single diode leds yet? If not, wtf is the hold up. I'm on the fence about buying either 1 - 500watt led or 5 100wat leds.

And stop calling your multi led light fixtures 400 watt led, and 100 watt led, and 200 watt led when you really have 200 1 watt leds or 400 1 watt leds etc etc. Its really confusing. If you dont have 400 or 300 or 200 or whatever watts coming out of one single led diode...then you don't have it....You have multiple 1watt or 3watt or 5 watt leds .....whatever....but lets keep it real....
 
hempfield

hempfield

Organic LED Grower
Veteran
Did you ever played with this type of LED lights to see what are them capable of ?

I don't recommend using 100W or higher LED matrix ( is not a single die LED, but a matrix of 1W chips connected on series and parallel on the same thermal substrate ) if you don't know how to handle such light source, as huge amount of heat will be generated and have to be moved away from it very quickly.

Using multiple low power LEDs distributed over the entire grow space assure a better coverage, even the penetration is not so good as in the case of HIDs.

And what will you do if your 100W or 500W LED dies ? Don't put all of your eggs on the same basket ....

:2cents:
 
PetFlora

PetFlora

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Yes, small multi-panels is awesome for small growers, but as hemp says, would not recommend a single 10- 100.... watt chips

Just finishing a led grow of ~ 80w (one-watt diodes) tested against > 300 HOT5 watts using aquarium bulbs

If interested, click on my sig
 
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PetFlora

PetFlora

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OK, single point source emitted light intensity will not be the same at the perimeter of it's effective range, whereas, small ~ 20w panels scattered around the plants provide broader and better balance of spectrums where the plants need them most
 
medmaker420

medmaker420

The Aardvarks LED Grow Show
Veteran
PetFlora said:
OK, single point source emitted light intensity will not be the same at the perimeter of it's effective range, whereas, small ~ 20w panels scattered around the plants provide broader and better balance of spectrums where the plants need them most
Click to expand...

I still want to see a christmas tree style of LED grow light strand where you can put them all over the plant. That would be sweeeet.
 
PetFlora

PetFlora

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Thinking more on this, what if...

a single chip, but multi-nms was suspended and aimed backwards into a curved reflector? I suspect that the various nm chips would blend better. The heat sink could be a long cylinder (someone has done that part on IC) so as not to block the light.

Better still (I think) would be ~ 10-20watt chips in smaller reflectors scattered around the plant/s.

I (as well as many others) have proven that ~65- 80w of one watt leds does a damn good job

See my thread for pics. Harvested her last week
 
S

SonnynGeechi

Member
"if you don't know how to handle such light source, as huge amount of heat will be generated and have to be moved away from it very quickly"

Its called a heatsink. In my case I will be using a passive heatsink so I don't have worry about a fan failing and frying a my lights....

And yes they make heatsinks for high powered leds. I mostly find heatsinks made for 300watt diodes so I'll probably get 2 300watt diodes..
 
hempfield

hempfield

Organic LED Grower
Veteran
SonnynGeechi said:
"if you don't know how to handle such light source, as huge amount of heat will be generated and have to be moved away from it very quickly"

Its called a heatsink. In my case I will be using a passive heatsink so I don't have worry about a fan failing and frying a my lights....

And yes they make heatsinks for high powered leds. I mostly find heatsinks made for 300watt diodes so I'll probably get 2 300watt diodes..
Click to expand...

I never seen before a heat-sink for a 300W LED and I am very curios how it looks. If you have the opportunity, please show us some pics with such heat-sink. I am very curious how big and heavy is and what is the working temperature.

Was this heat-sink designed by the LED producer or some third party company based on LED specs ? :chin:
 
PetFlora

PetFlora

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I bet the 50s can burn your retinas out. Are you growing in a high bay warehouse?
 
hempfield

hempfield

Organic LED Grower
Veteran
guvoo said:
the heatsink for 300W
weight: 6.6 kg

http://www.hjrch.com/en/html/products/707.html

Leds for this heatsink
http://www.snowdragonledhk.com/new-led-high-power-50w-100w-300w.htm
Click to expand...

Thanks for sharing this info !

But that heat sink ... is huge !

We must mention, for those who don't know that, that this LEDa are not actually high power diodes, but clusters or matrix of 1W chips, mounted on the same thermal pad, connected in strings which are linked on parallel or series, depending on model.

Using this high power LEDs without adequate driver and heat sink will cause them to burn and die very quickly.
 
T

trem0lo

localhero said:
am I missing something here, or shouldnt everyone be goin bananas over these? that 80w looks like its split into 4, 20 watts each i guess. 80 1 watt leds would cost much more than the $124 price tag on that. right?
Click to expand...

I think they'd be difficult to heatsink. Also the beam angle is not too wide so they'd burn a hole through your plants at close range.

Lower powered LEDs spread out over a wide area would give much better coverage.

Unless, as PetFora pointed out, you're growing in a high bay warehouse.
 
hempfield

hempfield

Organic LED Grower
Veteran
Can't be more intense than a 250w HPS, but no IR spectrum which mean less heat stress on plants. With just 4 of this LEDs a entire square meter could be easily flooded for good yields.

Hard to keep cool, indeed, but a 100W CPU cooler (with heat pipes) could help keeping the temperatuses low even on high power.

L.E I think this type of heatsink could be a good canditate for a quiet grow room (especially if the driver is placed inside the cooler to a more compact fixture) :

nof-cr95c-01.jpg
 
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W

WeedIsGod

Member
Viewing angle on most of these are ~140-160 degrees. There are no primary optics. They will not burn your plants.

Cooling is easy. CPU coolers and 12v wall warts to power the fans is all that's needed. That Enermax there can cool 120W pretty easily I would imagine (.09 degrees Celsius/Watt). The passive NoFan CPU cooler hempfield is talking about has a thermal resistance of 0.51 °C/W. I wouldn't go past 50W on that thing.

Shouldn't people be going crazy over these? I sure as hell think so.

50W Warm White (45mil chip) LED, 60W Mean Well driver, Super Micro SNK-P0034AP4, ~$1/W. Heat sink barely seems to budge from room temp. Still trying to figure out the right panel height, I don't know how that little tomato plant is handling it, it doesn't look happy about the change. Before today there was one of those ~30W supplemental panels you see there hung over it.
p1120334zpsd47e29f3.jpg
 
PetFlora

PetFlora

Well-known member
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hempfield said:
Can't be more intense than a 250w HPS, but no IR spectrum which mean less heat stress on plants. With just 4 of this LEDs a entire square meter could be easily flooded for good yields.

Hard to keep cool, indeed, but a 100W CPU cooler (with heat pipes) could help keeping the temperatuses low even on high power.

L.E I think this type of heatsink could be a good canditate for a quiet grow room (especially if the driver is placed inside the cooler to a more compact fixture) :

View Image
Click to expand...

Yeah but they are $88 a piece, at least for the copper ones, which may also dissipate more heat.

Hope someone builds some and does a thread. Could be the simplest solution yet.
 
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