jeepster1993
Well-Known Member
The big cola.
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- Thread starter project fuoro
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jeepster1993
Well-Known Member
Will weigh it out when it dries. It is fairly heavy, fairly dense, but not hard.
I'm guessing...
More than a gram per watt. A gram a watt would be a half pound, there is more than that.
I'm guessing...
More than a gram per watt. A gram a watt would be a half pound, there is more than that.
GroDank101
Well-Known Member
Can someone help me calculate how many lumens, or lumens per watt, will result from pairing hlg240-1750 with 4 (36v) cxb 3590? Thanks, I'm trying to get an idea how bright it would be compared to my 4 (36v) cxb 3590 at 1400mA. Thanks
MrTwist1
Well-Known Member
It's an extra 25% power minus a bit of efficiency... so say somewhere in the region of 22% more light.
JorgeGonzales
Well-Known Member
With your DIY chops, you should forget the 3590s. At least if you build like your last light, wasn't that just bare cobs, and bar heatsinks? That avoids any of the usual difficulties using the Citizen 1825 or 3618s, and they are both better choices to run above 50W.
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jeepster1993
Well-Known Member
Did I make a mistake???
Got this going on.
My new light.
4 3590's and all the mounting stuff.
Those heatsinks?
I got 140mm heatsinks, thinking the 140 was high...not wide. Shoulda checked...oh well too late now.
Those heatsinks are huge.
Can I use them? They are not too big? I can always build accordingly.
Got this going on.
My new light.
4 3590's and all the mounting stuff.
Those heatsinks?
I got 140mm heatsinks, thinking the 140 was high...not wide. Shoulda checked...oh well too late now.
Those heatsinks are huge.
Can I use them? They are not too big? I can always build accordingly.
verticalgrow
Well-Known Member
are u running drivers @ 1400ma?Did I make a mistake???
Got this going on.
My new light.
4 3590's and all the mounting stuff.
Those heatsinks?
I got 140mm heatsinks, thinking the 140 was high...not wide. Shoulda checked...oh well too late now.
Those heatsinks are huge.
Can I use them? They are not too big? I can always build accordingly.
should be fine
VG
coreywebster
Well-Known Member
Don't know your area so used 4 square foot on the calc
1400mA
CXB3590CD36V3500K 4 COBS @1.4A ON 1.813 PROFILE HEATSINK
4 SQ.FT. CANOPY 96% EFFICIENT DRIVER @11 CENTS PER KWH
Total power watts at the wall: 203.13
Cobs power watts: 195
Total voltage forward: 140
Total lumens: 35595
Total PAR watts assuming 10% loss: 99
Total PPF: 460.35
PPFD based on canopy area: 1238.79
PAR watts per sq.ft.: 24.75
Cob efficiency: 56.34%
Power watts per sq.ft.: 48.75
Voltage forward per cob: 34.89
Lumens per watt: 182.54
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 85
umol/s/W / CRI: 4.65 / Estimated
1750mA
CXB3590CD36V3500K 4 COBS @1.75A ON 1.813 PROFILE HEATSINK
4 SQ.FT. CANOPY 96% EFFICIENT DRIVER @11 CENTS PER KWH
Total power watts at the wall: 258.33
Cobs power watts: 248
Total voltage forward: 142
Total lumens: 40573
Total PAR watts assuming 10% loss: 118
Total PPF: 548.7
PPFD based on canopy area: 1476.54
PAR watts per sq.ft.: 29.5
Cob efficiency: 52.87%
Power watts per sq.ft.: 62.0
Voltage forward per cob: 35.49
Lumens per watt: 163.6
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 117
umol/s/W / CRI: 4.65 / Estimated
Cob Calculator https://www.rollitup.org/t/diy-cob-led-calculator.890214/page-9#post-12844403
Latest working link with infinite cob number selection https://www.dropbox.com/s/hqgj9n5qxb9xrei/DIYCOBLEDCalculator.jar?dl=0
JorgeGonzales
Well-Known Member
No mistakes there. That's awesome. Remember the better you cool the more efficient your cobs run, so enjoy the 140mm overkill.
daone
Well-Known Member
I have a question for you sir .They have several different iceLED coolers which one do you recommend for the clu058?
nevergoodenuf
Well-Known Member
That would depend on how hard you plan on running them?
GroDank101
Well-Known Member
yeah and that is also how I plan to build these next 2 lights for my 4x4' tent. I will check into those citizen cobs. thanks @JorgeGonzales @MrTwist1 @coreywebster
how many citizen 3618, would replace 8 cxb 3590s given the same current and voltage? or would I have to run the citizens at a lower current?
edit: looking at the specs of the CLU058 3618, looks like it needs to run at like 1050mA or 700mA, it needs a low current right?
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dro-man80
Well-Known Member
looks familiar lol....looking good broThe big cola.
nevergoodenuf
Well-Known Member
This should help you
MrTwist1
Well-Known Member
I really like the look of the CLU048 1825... in fact my next build will utilise 8 of them run at 1400mA for around 72W each, and around 580W total. At this current they are approximately the same efficiency as CXB3590 putting out 50W. They cost about the same price as the CXB, so it's a no brainer really. I plan to run this in 4x4 using 3 x HLG-240H-C1400 or similar.
I actually assumed you had already bought the CXBs for this build, otherwise I would have told you about these COBs sooner. Peace
coreywebster
Well-Known Member
The CLU058 actually work out cheaper for me. £31.75 each. vs £26.92 + 20vat because I cant get them anywhere near that price within Europe. The CLU058 1825 I can get in my own country for the above price so no VAT and should save on delivery charges on top of that. From Primelight if any Europeans are interested.
MrTwist1
Well-Known Member
Sorry my bad... I actually meant the CLU058 1825. Early tests show them to be really good COBs. If u can get them cheaper than 3590 I'd say you'd be a fool not to grab them. This way you can run close to 600W from only 8 COBs, which I think was what you were really wanting to do, right?
coreywebster
Well-Known Member
Yeah my aim is to replace my 600w hps in my 4x8, its actually a 1.2mx2.4m but 4 x 8 is close enough. I have 1800w of hps in there.
This is my flower tent, so my aim is to replace those with cobs and reduce power. I don't have to hit the same PPFD. Originally was looking at 16 cbx3590s ran soft in half of my tent. Until everyone started talking about these bad boys.
I just bought 30 of the earlier gen 1212s too to get some build practice in and I will build my mate something, he runs my old veg tent which is 2x4, he has a 250w hps(veg) so the coverage is crap. Me using those older 1212s will help both me and him. He can get better coverage, a bit better efficiency too and I will get some practice in. That's if they arrive. I wont count my chickens till they hatch.
If I go with these 1825s the cost of heat sinks is pretty good, 3 drivers at around £60 each and 9 cobs, it all looks rather appealing.
Will try one set up against a 600w and then build another. Check temps and if all is well then could add another bar of 3. See how much I can push it within manageable temps.
