alesh
Well-Known Member
Correct.
Wrong.
If 100% of energy were radiated, the LED would put out 325lm/W. As it puts out 162.5 lm/W we can estimate it's 50% efficient, that is 50% of energy is radiated as light and the rest is dissipated as heat.
COB efficiency Spreadsheets
- Thread starter nogod_
- Start date
If 100% of energy were radiated, the LED would put out 325lm/W. As it puts out 162.5 lm/W we can estimate it's 50% efficient, that is 50% of energy is radiated as light and the rest is dissipated as heat.
AquariusPanta
Well-Known Member
Hmm? I'm now confused.
robincnn
Well-Known Member
Had a question about COB efficiency in another thread
Did not want to confuse the guy on that thread so I posted in 'COB efficiency Spreadsheets' thread.
AquariusPanta
Well-Known Member
I'm digging your new avatar - would make for a sweet logo for a certain company...
Mrsmokestacks
Well-Known Member
I've struggled to find an efficiency chart that shows the cxb3590 3000k CD 36v at 1.05a. I am trying to decide between those and the cxb3070 3000k Ad at 1.05a. If anyone can guide me to one it'd be awesome! TIA!
nevergoodenuf
Well-Known Member
I think the cxb 3590 will need 1.4a. And they will be more efficient than the cxb3070 @ 1.05a.
Mrsmokestacks
Well-Known Member
You can't run 36v cxb3590 @1050 ma?? That sucks because I was gonna run 5 per hlg 185 c1050!
littlejacob
Well-Known Member
Bonjour
You can put 4 cxb3590 on a hlg-185-1400.You could run them at 1050mA by dimming them.I don't think 5 would fit the 1050mA hlg.
Have a great day★
You can put 4 cxb3590 on a hlg-185-1400.You could run them at 1050mA by dimming them.I don't think 5 would fit the 1050mA hlg.
Have a great day★
Mrsmokestacks
Well-Known Member
Thanks lj. You have a great day too. I'm still a bit confused. I'm running 5 36v cxb3070 on that driver. If the cxb3590 is 36v also then wouldn't it work at 1050 mA too, but just more efficiently? That's why I want to go with the cxb3590 cd 36v over the cxb3070 ad... effeciency. And I also want to use holders and reflectors this time around. I don't know tbh though I'm just a beginner! I am running 28 cxb3070s with hlg 185 c1050's and c1400's and was wanting to increase effeciency when I put in a larger order. Thanks guys
alesh
Well-Known Member
You can. 5 of them will fit the driver easily. The efficiency will be around 55% for the CB bin and slightly higher for the CD bin.
Mrsmokestacks
Well-Known Member
Thanks alesh! That's exactly what I was wondering! Cheers!
bicit
Well-Known Member
You can drive the CXB all the way down too 230ma as far as I've tested. Probably lower if need be.
SupraSPL
Well-Known Member
Probably better to repost this here. With driver costs taken into account this is how the Vero18 stacks up. More efficiency = less heat to get the same job done along with some electrical savings.
It seems there are no perfect-match drivers for running Vero29s hard. The closest thing is probably Mean Well HLN-80H-36, puts out 2.55A but ~$40 ea. When you take driver cost into account it changes the picture. HLG-185H drivers $64 each. From lowest cost/PAR W to highest:
(5) Vero13 4000K @ 1.05A = 182W
33.2% efficient
60.4 PAR W
$36 + $64
$1.66/PAR W
(10) Vero10 4000K @ 700mA = 197W
32.4% efficient
63.8 PAR W
$44 + $64
$1.69/PAR W
(4) Vero18 4000K @ 1.4A = 168W
38% efficient
64 PAR W
$50 + $64
$1.78/PAR W
(1) Vero29 4000K @ 2.55A = 98W
39% efficient
38.2 PAR W
$28 + $40
$1.78/PAR W
(6) Vero18 4000K @ 1.05A = 184W
40.6% efficient
75 PAR W
$75 + $64
$1.85/PAR W
(4) Vero29 4000K @ 1.4A = 200W
44% efficient
88 PAR W
$113 + $64
$2.01/PAR W
(4) CXB3070 3000K AD @ 1.4A = 200W
48% efficient
96 PAR W
$150 + $64
$2.24/PAR W
(4) CXB3590 3500K CD @ 1.4A = 196W
56.2% efficient
110 PAR W
$190 + $64
$2.31/PAR W
So it looks like the Vero10/13 don't save much $ and sacrifice a lot of efficiency. The Vero 18 and 29 setups seem like good compromise for value and efficiency. If you want to prioritize efficiency for heat reasons or if you have very high electrical costs where you live, might be worth paying the extra for CXB3070 or waiting for the CXB3590 3500K CDs to land.
It seems there are no perfect-match drivers for running Vero29s hard. The closest thing is probably Mean Well HLN-80H-36, puts out 2.55A but ~$40 ea. When you take driver cost into account it changes the picture. HLG-185H drivers $64 each. From lowest cost/PAR W to highest:
(5) Vero13 4000K @ 1.05A = 182W
33.2% efficient
60.4 PAR W
$36 + $64
$1.66/PAR W
(10) Vero10 4000K @ 700mA = 197W
32.4% efficient
63.8 PAR W
$44 + $64
$1.69/PAR W
(4) Vero18 4000K @ 1.4A = 168W
38% efficient
64 PAR W
$50 + $64
$1.78/PAR W
(1) Vero29 4000K @ 2.55A = 98W
39% efficient
38.2 PAR W
$28 + $40
$1.78/PAR W
(6) Vero18 4000K @ 1.05A = 184W
40.6% efficient
75 PAR W
$75 + $64
$1.85/PAR W
(4) Vero29 4000K @ 1.4A = 200W
44% efficient
88 PAR W
$113 + $64
$2.01/PAR W
(4) CXB3070 3000K AD @ 1.4A = 200W
48% efficient
96 PAR W
$150 + $64
$2.24/PAR W
(4) CXB3590 3500K CD @ 1.4A = 196W
56.2% efficient
110 PAR W
$190 + $64
$2.31/PAR W
So it looks like the Vero10/13 don't save much $ and sacrifice a lot of efficiency. The Vero 18 and 29 setups seem like good compromise for value and efficiency. If you want to prioritize efficiency for heat reasons or if you have very high electrical costs where you live, might be worth paying the extra for CXB3070 or waiting for the CXB3590 3500K CDs to land.
Stephenj37826
Well-Known Member
Where would you source the cxb3590 35k cd bin. could you point me to the right meanwell driver that you have specified here?
HydroDC
Well-Known Member
Stephenj37826
Well-Known Member
Thanks so much.
Stephenj37826
Well-Known Member
So your saying to use the 72v version. The guy is suggesting to use the 36v version. What driver would u need to run 4 of those at roughly 200 watts?