LED COB bar project

bmdiyh

bmdiyh

Well-Known Member
alesh said:
Last time (a month ago) I asked Jerry from Kingbrite, I got quoted @ $28.5 for the AB bin and $36.5 for he AD bin.
HLG-185H-C1050 + 6x Vero18 is another cheap possibility (although not that efficient - ~40%).
Click to expand...
My info is from Jerry, from today.
 
bmdiyh

bmdiyh

Well-Known Member
I'll ask him again, because if you are right I'll get the CXB3070s. It is way better! Otherwise I'll go with the Veros and just Blow them harder ;)
 
P

PurpleBuz

Well-Known Member
alesh said:
HLG-185H-C1050 + 6x Vero18 is another cheap possibility (although not that efficient - ~40%).
Click to expand...
5 x vero29 might work out well on the HLG-185h-c1050. seems to match the meanwell spec really well (5x38 == 190V).

I tested 5 vero18s on an HLG-120H-C1050, and it stayed under 150V (5X30 == 150V).
 
bmdiyh

bmdiyh

Well-Known Member
Same calculations for the CXB3070 AB @ $28.5 (IF)

4xCXB3070 AB x 8 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x CXB3070 AB x 25.68 euro = 1027.20 + 112.67 shipping

1623.94

4xCXB3070 AB x 49.83 Dissp.W@1.4A@45.43% = 22.64 PARW x 4 = 90.55 PARW


If this is the case I'll get those..... +2.4% :D
 
Abiqua

Abiqua

Well-Known Member
bmdiyh said:
Same calculations for the CXB3070 AB @ $28.5 (IF)

4xCXB3070 AB x 8 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x CXB3070 AB x 25.68 euro = 1027.20 + 112.67 shipping
1623.94

4xCXB3070 AB x 49.83 Dissp.W@1.4A@45.43% = 22.64 PARW x 4 = 90.55 PARW


If this is the case I'll get those..... +2.4% :D
Click to expand...
What is the voltage @ 1.4 amps?.....of the CXB 3070 AB :peace:
 
bmdiyh

bmdiyh

Well-Known Member
alesh said:
:)
I tried to hint you that you wouldn't be paying more for few PAR W more but rather for increased efficiency (which means less heat, lower demands on ventilation, etc).
HLG-185H-C1400 + 4x CXB3070 AB (@ $28.5 each) seems like the best compromise to me. I also have some doubts that 4x Vero29 + HLG-185H-C1400 would work at full power, though I haven't tested it.
Click to expand...
CXA 3070 cost 28.5$ not the CXBs
 
bmdiyh

bmdiyh

Well-Known Member
Running the veros29 @1.05A will make them 44.75% efficient. Each will give off 37.7 DisspW, 16.87 of which will be PARW. I'll have to run each bar with a 150W driver. Any suggestions for a driver compatible with the Vero29s?
This will decrease the whole COB consumption from ~1.6KW to ~1.2KW.

But is ~17PARW per square foot enough or is it better to stick with the lower (-1.72%) efficiency and higher overall output, higher temp?
 
bmdiyh

bmdiyh

Well-Known Member
Another thing. I have been in contact with suppliers also for customized heatsinks. I also contacted heatsinkUSA but it was very expensive buying from where I live. So I am waiting now on prices for the following design:
front.jpg

I have made holes for the vero29s and they said that they can pre-drill them so I can just put the COBS on when I get them! :D
bottom.jpg
 
marosa

marosa

Active Member
bmdiyh said:
Another thing. I have been in contact with suppliers also for customized heatsinks. I also contacted heatsinkUSA but it was very expensive buying from where I live. So I am waiting now on prices for the following design:
View attachment 3453426

I have made holes for the vero29s and they said that they can pre-drill them so I can just put the COBS on when I get them! :D
View attachment 3453425
Click to expand...
hi
from where do you buy that in europe? and for how much?
ty
 
bmdiyh

bmdiyh

Well-Known Member
Well I
marosa said:
hi
from where do you buy that in europe? and for how much?
ty
Click to expand...
One thing is for sure now. It's not worth it to buy it from China, unless you're buying 3 tons of the stuff ;)
So I don't know for the hole Europe. I think I have a local supplier or a workshop that specializes in aluminium extrusions. I'll have to speak with them about it.
 
SupraSPL

SupraSPL

Well-Known Member
So are you aiming to cover a 4'X8' or 32 ft²? If so,

bmdiyh said:
Where I live is hot all year round. I cannot deal with heat that well without spending a lot on ventilation. Don't HPS have this as a con, the excessive heat?
Click to expand...
Since heat is an issue, the efficiency (and efficacy) may affect your grow more than the direct electrical savings of the lamp. To compare heat in your 4'X8':

----------------------------------------------------------
2X 1000W HPS DE bare, 40.8% efficient =
960 PPFD
1184W of heat

-----------------------------------------------------------
4xVero29 x 10 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x Vero29 x 24.79 euro = 991.60 + 112.67 shipping
1588.34
4xVero29 x 50.96 Dissp.W@1.4A@43.03% = 21.93 PARW x 4 = 87.71 PARW/bar
1230 PPFD
1163W of heat

----------------------------------------------------------
4xCXB3070 AD x 10 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x CXB3070 AD x 32.87 euro = 1314.80 + 112.67 shipping
1977.87
4xCXB3070 AD x 49.83 Dissp.W@1.4A@48.02% = 23.92 PARW x 4 = 95.71 PARW/bar
1346 PPFD
1040W of heat

---------------------------------------------------------
4xCXB3590 CD x 10 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x CXB3590 CD x 41.87 euro = 1674.80 + 112.67 shipping
2271.54
4xCXB3590 CD x 49 Dissp.W@1.4A@56.2% = 27.54 PARW x 4 = 110.15 PARW/bar
1712 PPFD
876W of heat

-------------------------------------------------------------

In this example all the COB setups are very high intensity, maybe too high for a 4'X8'. So if you cut the number of CXB3590s in half to 980W, you get:
856PPFD
438W of heat

So that is equal intensity/efficacy as the 2000W of HPS but one third the heat.
 
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bmdiyh

bmdiyh

Well-Known Member
SupraSPL said:
So are you aiming to cover a 4'X8' or 32 ft²? If so,



Since heat is an issue, the efficiency (and efficacy) may affect your grow more than the direct electrical savings of the lamp. To compare heat in your 4'X8':

----------------------------------------------------------
2X 1000W HPS DE bare, 40.8% efficient =
960 PPFD
1184W of heat

-----------------------------------------------------------
4xVero29 x 10 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x Vero29 x 24.79 euro = 991.60 + 112.67 shipping
1588.34
4xVero29 x 50.96 Dissp.W@1.4A@43.03% = 21.93 PARW x 4 = 87.71 PARW/bar
1230 PPFD
1163W of heat

----------------------------------------------------------
4xCXB3070 AD x 10 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x CXB3070 AD x 32.87 euro = 1314.80 + 112.67 shipping
1977.87
4xCXB3070 AD x 49.83 Dissp.W@1.4A@48.02% = 23.92 PARW x 4 = 95.71 PARW/bar
1346 PPFD
1040W of heat

---------------------------------------------------------
4xCXB3590 CD x 10 bars
10 x HLG-185H-C1400B x 43.90 euro = 439 + 45.07 shipping
40 x CXB3590 CD x 41.87 euro = 1674.80 + 112.67 shipping
2271.54
4xCXB3590 CD x 49 Dissp.W@1.4A@56.2% = 27.54 PARW x 4 = 110.15 PARW/bar
1712 PPFD
876W of heat

-------------------------------------------------------------

In this example all the COB setups are very high intensity, maybe too high for a 4'X8'. So if you cut the number of CXB3590s in half to 980W, you get:
856PPFD
438W of heat

So that is equal intensity/efficacy as the 2000W of HPS but one third the heat.
Click to expand...
First of all thank you for the "back to reality" post. Actually I was planning on running 8 of the bars in the 4x8 flower area and the other two in the 4x4 veg area. From what I understand at the end you are saying that I could cover the 4x8 with 20 CXB3590 (980 DisspW) and it will be equal to having 2 1000W HPS lights. I presume this will be sufficient light for the space filled with a lot of short, small(let's hope) plants? If that's the case buying the CXB3590s will be almost as much as the Vero29s if I go with the 32 + 8 and the whole thing will be cheaper. Again that is only if I'll be able to flower adequately with the 20 of the CSB3590. I know shit will get real serious when I start for real, but I really want to make sure of as much as I possibly can before I start.
 
SupraSPL

SupraSPL

Well-Known Member
Yes 856 PPFD is high intensity great results even if they were tall ladies, so 20 3590s would do the job with minimal heat. That also reduces your driver and heatsink cost and partially make up for the higher cost of the CXBs.

If you went with 20 Vero 29s you get 615 PPFD and 581W of heat. Not as high intensity as the 3590 or 1000W DE HPS setup but since they will be short ladies I think you would still get good results and half the heat.
 
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