LED Companies w/ LINKS

Red1966

Red1966

Well-Known Member
stardustsailor said:
Mine has started some ~5 years ago ....
Trying to built my first LED grow light ...

Using a CV 12 VDC PSU and plenty of these ...
View attachment 3170597

and these...
View attachment 3170598

And I was really impressed when I was using ~50 Watts in total .....
And actually ,managed to grow a WhiteRussian plant and yield ...~40grms !!!!!
(0.8 gpw )

Until then ,I was growing with a 400W HPS ...
My best yield ever was ~280 grms ...
(0.7 gpw ) ...

Of course I sold eveything of my HID equipment and parafernalia ,the very next day ...
I needed ASAP 'funds' to support my new research and projects .
Risked ,everything ,by starting a journey to the 'unknown ' ...

Never really have regret it,for doing so ...
Never will.
That journey is endless.

Cheers.
:peace:
Click to expand...
Maybe I'm missing something, but going from 280gm to 40gm doesn't sound like an improvement.
 
stardustsailor

stardustsailor

Well-Known Member
Red1966 said:
Tell me that two weeks from now when that 40gm is gone and I'll point to the 240gm you could have still had. I grow pot to grow pot, not to save electricity.
Click to expand...
By all means ..You 've every right to do so ...
As also I 've every right to do my thing ...
I grow pot,to yield as close to 280 grams from as close to 50 W ..
I hope you do not mind ...

Maybe to you(and plenty of others ) it seems rather something impossible ..
And that's the problem with me ..
I do not know,the exact meaning of that word ...

" Impossible ! " ....
WTF is impossible ,anyway ?


Cheers .
 
spazatak

spazatak

Well-Known Member
there is always a place for both you guys in this world of weed...

People like SDS are the reason we are able to refine how methods to get maximum yield for minimum bang and its the mad gardeners all over the world growing weed in the homes who sometimes come up with something special that we all end up adopting or finding useful in the process of this hobby that involves so much joy and time..

I wasnt around when "weed" went inside but from what I have read people laughed at that idea too..... look at how far its come since then....
 
Red1966

Red1966

Well-Known Member
stardustsailor said:
By all means ..You 've every right to do so ...
As also I 've every right to do my thing ...
I grow pot,to yield as close to 280 grams from as close to 50 W ..
I hope you do not mind ...

Maybe to you(and plenty of others ) it seems rather something impossible ..
And that's the problem with me ..
I do not know,the exact meaning of that word ...

" Impossible ! " ....
WTF is impossible ,anyway ?


Cheers .
Click to expand...
Even at 100% efficiency, you're not going to get 280gm. Now, 350w would apparently get you there. I just can't see spending 3-4 months growing just to get a couple weeks worth of smoke. If you want to be a pioneer in growing with LEDs, more power to you. I just differ with the idea of such a small grow. Go buy 6 more lamps! That's an order!
 
FranJan

FranJan

Well-Known Member
Bayer is looking to change the game a bit by showing manufacturers how to use their Makrolon polycarb as a heatsink to cut down on manufacturing costs, especially in the assembly department. What's cool is you're talking about an entire, (waterproof?), case acting as a heatsink, even lenses made from this stuff could be used for cooling. Very cool ;).

From LIGHTimes
http://www.lightimes.com/documents/view/sectornews.php?id=124132&sector=ledcomp#top

Thermally Conductive Plastics from Bayer MaterialScience Can Make Cost-effective LED Heat Sinks

June 5, 2014...One of the significant barriers for the mass adoption of LED lighting is its higher cost than the incumbent technology. Bayer points out that conventional materials used for LED packaging can require complicated and costly assembly. Therefore, LED manufacturers are seeking better material solutions to help streamline LED assembly. Bayer MaterialScience LLC showcased its thermally conductive Makrolon® TC8030 polycarbonate to replace aluminum in heat sinks during ITherm on May 28th. Bayer contends that its Makrolon polycarbonate heat sinks can reduce assembly steps and cost per unit in applications, such as parabolic aluminized reflector lamp (PAR) or multi-faceted reflector (MR) configurations.

As part of the LED Packaging session, senior scientist Nicolas Sunderland; principal engineer Jim Lorenzo; and principal engineer Terry G. Davis, all of Bayer MaterialScience LLC, presented a paper about using polycarbonate heat sinks for efficient thermal management. Dr. Sunderland detailed tests and simulations he conducted to compare the thermal properties of polycarbonate replacement materials to aluminum in LED heat sinks. Sunderland concluded that the thermally conductive Makrolon® TC8030 polycarbonate can successfully replace aluminum as a heat sink material. Furthermore, Sunderland found that Makrolon can reduce assembly cost and create features and shapes that are not possible with aluminum.

More Makrolon info for you complicated peeps :).
http://www.plastics.bayer.com/en/Products/Makrolon.aspx
http://www.sheffieldplastics.com/makrolon_family.cfm
 
FranJan

FranJan

Well-Known Member
And speaking of Lumigrow, does anyone know if Lumigrow has ever admitted it's using OSRAM LEDs? Lumi's site has no info on what it uses but OSRAM is saying they're using "Oslon SSL hyper-red, Oslon Square 450 nm deep blue, and Oslon Square warm white LED" according to an article on LIGHTimes. I never knew what they were using and it definitley moves Lumi a bit higher on my personel list but what I would really love is to get my hands on some of their drivers so I could use that software of theirs.

C'mon Lumigrow, start a custom driver department!!!
 
SupraSPL

SupraSPL

Well-Known Member
As far as I can tell, thermal conductivity of Makrolon TC8030 is about 22W/(m·K) versus aluminum at at least 200W/(m·K). I am wondering how they could make that work?
 
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Rooster99

Well-Known Member
SupraSPL said:
As far as I can tell, thermal conductivity of Makrolon TC8030 is about 22W/(m·K) versus aluminum at at least 200W/(m·K). I am wondering how they could make that work?
Click to expand...
Considering that that 22W/(m·K) is still significantly higher than even the best TIM, do you think that it may be a case of the whole thermal system being somewhat limited to the component with the lowest W/(m·K) rating? Thoughts? I'm no expert on this at all but its something I've wanted to know.
 
SupraSPL

SupraSPL

Well-Known Member
The way I see it, it is OK to have a low thermal conductivity if the gap is very small. Or if you have a TIM with a high conductivity it is OK to have a large gap or a thick layer (like the pads). Of course for the efficiency-obsessed we like to have both in our favor. But if the heatsink itself was only 22W/(m·K), no matter how large you make the heatsink the temperature gradient would be much higher than with a thick aluminum base plate. That would lead to much higher Tj especially for COBs.

The only way I can see it as a viable replacement is in the case of super cheap LEDs that have huge gaps, low quality aluminum or even in some cases non-aluminum heatsinks. In some cases they don't even bother with a thermal paste. So for those cheapos, maybe they could actually do a better job with injected molded plastic and get a better Tj.

Another way it could be useful is if an aluminum or copper base plate was fitted with a huge amount of plastic fins. That might actually work but the interface between the aluminum and the plastic would have to be precise and it might just be cheaper to go with extruded aluminum all the way.
 
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Rooster99

Well-Known Member
Yeah I forgot that most Led applications are for diodes that push nowhere near what we are asking of our cobs. 50w is a huge amount compared to the more reasonable 1-5w that we would usually see with smaller and more common emitters.
 
kmog33

kmog33

Well-Known Member
spazatak said:
just got a response from the company...

from the email.

The following are the list prices for each of our systems:
L4A Series 10 - 4820 EUR
L4A S20 - 5925 EUR


LX60 Series - 1675 EUR

Click to expand...
So the lx60 covers 6ftx6ft from 6ft above the canopy? Thats pretty intense if accurate.

Sent from my LG-LS980 using Rollitup mobile app
 
spazatak

spazatak

Well-Known Member
the 602 does I think...

so they say..50,000 hours and a 1 year warranty...for 1600 EUROs....

my pockets arent that deep...




check out their page.. heliospectra
 
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