CobKits
Well-Known Member
passive pin fins good up to 80-100W
active coolers with fans good up to 300+W
you dont "need" water cooling to run cobs hot
active coolers with fans good up to 300+W
you dont "need" water cooling to run cobs hot
mahiluana
Well-Known Member
I tested ~6500K vs. ~1800K chinise 50W cobs under same conditions and i couldn`t see any significant difference caused by the spectrum. (6th week 18/6)
The space 3x4 covered by 335W seperated in pink1800K and coldwhite6500K watercooled light bars.
Cheapest watercooled solution is for shure a big bucket, little water pump and an old socket.
It helps me to increase humidity. Watertemp. 32°C airtemp. 27°C
Since i installed a heatexchanger (165,-EURO) i save ~50,-EURO on my hot water bill each month. 335W / 18h = 80L hot water or 2 showers.
---> efficiency gain of your lampsystem >100%
running this coolmac system 20 years long i can save a max. of 12000,-EURO
Then i`m 76 and buy a little cabana on the latin pacific coast - for the same money.
CobKits
Well-Known Member
Efficiency (ppfd/W) of current chips stacks up roughly something like this
citi 3618 gen6
citi 3618 gen5= luminus cxm32 = citi 1825 gen6
citi 1825 gen5 =vero gen6 "C" = luminus cxm27
luminus cxm22=citi 1818 gen6
citi 1818 gen5=vero gen6 "B"
cxb3590 = vero gen6 "D"
citi 1212 gen6
citi 1212 gen5
economy (ppfd/$) would prob look something like
citi 1212 gen6
luminus cxm22
vero gen6 "B"
citi 1825 gen6
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VegasWinner
Well-Known Member
With the 3500k you can add additional reds for bloom to be turned on/off and additional royal blue for veg. Build a custom light adding the spectrum you need to your base. For veg I start with 5000k and add more blue. For bloom I start with 3500k and add more red.
KonopCh
Well-Known Member
How you can compare 1818 gen 5 with Vero B? Because you sell them?
152 lm/W vs. 163 lm/W at 1.4A, 3500K, 80 CRI. Vero is much better at the same price (19 for 1818, 21 for Vero).
Same is with 1825 gen 5 vs. Vero C... Vero again wins and is cheaper 1-2 dollars.
CobKits
Well-Known Member
because thats how they test out in real world. veros are good chips i wont dis them at all. B is slightly more efficient than D and is the same price so is prob the best value of the veros imo. The Cs are quite a bit more efficient but also about $10 more so not as good of a value, and also driver availability is more limited at that voltage
CobKits
Well-Known Member
do you have one of those calvin stickers on your car lol?
theyve got about 3-4x as many dies and great heat dissipation so yes they are at the top of the heap as far as i know right now. i just got some 4000k 80s (my official reference spectrum for comparing chips) and will run it against the others soon
Nugachino
Well-Known Member
Don't own a car. So no.
Okay. So the next question is, what voltage. I noticed the (CLU058-3618C4-403M2K1) on Digikey runs at 112v. Where the others are more the normal voltages of between 36v to 69~
Is it something I should consider using. The only things I noticed in the data provided is that it outputs about 5000 lumens more than the lower voltage chips. And that the 150w driver I was looking at, would need to be swapped out for the 185w model.
Okay. So the next question is, what voltage. I noticed the (CLU058-3618C4-403M2K1) on Digikey runs at 112v. Where the others are more the normal voltages of between 36v to 69~
Is it something I should consider using. The only things I noticed in the data provided is that it outputs about 5000 lumens more than the lower voltage chips. And that the 150w driver I was looking at, would need to be swapped out for the 185w model.
Mullumbimby
Well-Known Member
Anyone or any plant, since there is an inverse relationship between wavelength and electromagnetically radiated energy.usable by who?
If I said "more photo-active radiation", would you be happier?
Nugachino
Well-Known Member
Considering I want to run the CLU058-3618C4-403M2K. Do you guys think the PF-250CC-C140-S-DM would be an alright option? I mean it runs at 200mA less than what Citizen test this chip at. That's not going to be that much of an issue right?
Also. I'm not completely dismissing the idea of additional leds to augment the light towards a certain spectrum. I just cbf trying to figure out too much crap right now.
Also. I'm not completely dismissing the idea of additional leds to augment the light towards a certain spectrum. I just cbf trying to figure out too much crap right now.
xX_BHMC_Xx
Well-Known Member
@CobKits you made a recommendation to me a while back to run the 038's rather than the 028's, which I have decided to do in my cab grow. 5 3000k and 5 5000k, both 80 CRI, over a pretty small space. What are your thoughts on this arrangement? Also, at room temp the string of 10 is right at the drivers max of 357v and 249w. Is it safe to run these HLGs topped out like that?