12xCXB3590 Passively Cooled

Netherfly

Well-Known Member
First off, hi from the Netherlands!! I read all my info off this forum I wanted to share my build with you guys:

2 x HLG-240H-C1050A
12x CBX3590 3500K
12x Aluminium heatsinks (105mm in diameter, height 60mm) rated for 40 watts

http://hzlangteng.en.alibaba.com/pr...inum_extrusion_led_street_light_heatsink.html

47x47x78 inches growtent

Now i'll just bombard you with all the pictures :bigjoint:
IMG_20160116_162610_zpsazokgu5l.jpg

IMG_20160116_162636_zpskpomjphl.jpg

IMG_20160123_200237_zpsbbrldsm7.jpg


IMG_20160126_075445_zpsfllcwjb4.jpg

IMG_20160127_072931_zpsk642jr6l.jpg

IMG_20160127_072955_zpszcxn34hh.jpg


IMG_20160127_213515_zpspc6jclr8.jpg

IMG_20160127_213526_zpsvqweetze.jpg

IMG_20160127_213600_zpsxwbqfrl7.jpg

IMG_20160127_213738_zpscooovm5l.jpg

IMG_20160203_215839_zpsjopm2mom.jpg

IMG_20160203_215937_zps1dludhzm.jpg

IMG_20160203_223406_zpsfjjlbeky.jpg

IMG_20160203_223433_zpst6iagt7k.jpg

IMG_20160203_223339_zpsjkbgmqmm.jpg

IMG_20160203_223448_zpsq4farmxe.jpg

IMG_20160206_232228_zpsua7ddy65.jpg

IMG_20160206_232207_zpsrhjqqgpo.jpg

IMG_20160206_233639_zps1zgbxpyu.jpg

IMG_20160206_232124_zpsmbg8f9hj.jpg


First grow will be 7 feminized seeds: Black Jack by Sweet Seeds :weed:

http://en.seedfinder.eu/strain-info/Black_Jack/Sweet_Seeds/
 
how much were those particualr heatsinks, i assume they came black anodized? what sort of temps are you seeing at their rated wattage?
 
Hello Netherfly , really nice build. What I like is this is stripped down to where you are spending money on the photons, instead of fans that you don't need and the standard heatsinks . Can I ask where you found the square tube frame, and also the hardware bolt/wingnut for mounting cobs to the frame? thanks:hump:
 
One of the best designs I have ever seen! I love the flexibility to be able to tilt the COBs! Awesome job, Netherfly!
 
Glad you guys like it!

@bobby g:

Here are the temps of the heatsink, and ambient temps with LED's at full power, and ventilation ON (tube vent on lowest setting with carbon filter and 2 clipon fans in the tent)
I spend a lot on a supersilent tube ventilator, this tent is very stealthy :)

IMG_20160209_192110.jpg IMG_20160209_194500.jpg

@ALASKAN boy:

I bought the tubing + connectors at a local shop which builds aviary's.
Here is the link to their website, hopefully you can get a hold off it in Alaska :)
http://www.volierezelfbouw.nl/c-2399678/hoekverbinders-voor-koker-25x25x2mm/

Look who decided to show up!

IMG_20160209_195844.jpg
 
Last edited:
Nice build. Im also interested in building a LED using passive cooling. Judging on what I have read so far, it seems like those heatsinks might not be enough for those cobs but I suppose its hard to calculate surface area for pin style instead of fin style sinks.... Is that heat measurement of the air above the sink, or the actual metal? I saw on a youtube video you should have 17 square inches of surface for each heat watt being generated by the cob. Is that fairly accurate?
 
@thetr33man:

If you follow the link in my first post, on alibaba, you can find the specs of every dimension heatsink they offer.
The pins create a big surface area.
These are rated for 40 watts, according to Growmau5's calculations for this setup, my COB's dissipate 35 watts
I measured with the meatprobe touching the base of the heatsink.

@Sativied: Danku Danku :)
 
I wonder how those heatsinks will hold up in the summer?very close to max................. nice & simple industrial build, tilting angles is a great idea on the perimeter

good luck and will follow this run...
 
Back
Top