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Water cooled COB Build/pic heavy

Discussion in 'LED and other Lighting' started by Godfather420, Jan 10, 2017.

  1.  
    Godfather420

    Godfather420 Well-Known Member

    Still working on a water-cooled production line?
     
    ttystikk likes this.
  2.  
    ttystikk

    ttystikk Well-Known Member

    Still trying to get it right first.
     
  3.  
    CobKits

    CobKits Well-Known Member Rollitup Advertiser

    ill loan a li-cor
    nothing needs water cooling lolol
     
    ttystikk likes this.
  4.  
    Godfather420

    Godfather420 Well-Known Member

    Hmmmmmm.....Actually yes, lots of things need water-cooling... in fact. how much water did you just drink while shoveling that snow off you driveway? Yes, watercooling.... And how bout that car you're digging out of the snow? Unless its a VW or porsche, most likely it's water cooled as well... ; )
     
    mahiluana likes this.
  5.  
    Godfather420

    Godfather420 Well-Known Member

    Hear ya there, well stay tuned. I'm going balls deep in this.
     
    ttystikk likes this.
  6.  
    Godfather420

    Godfather420 Well-Known Member

    Water cooling for me, like you ain't so much about cooling these chips. It about efficient heat and dehumidification removal as well. And furthermore, on the gorilla tip, keeping those peeps in places where its still illegal, armed with the best to tech to defeat the man! No infrared scan will pick up my future water-cooled grow. But water-cooling will always be more expensive upfront.These things cost money to establish.
     
    Maersk, Organic Miner and ttystikk like this.
  7.  
    Godfather420

    Godfather420 Well-Known Member

    UGH.... So many cobs, so many choices :wall:
     
    ttystikk likes this.
  8.  
    Godfather420

    Godfather420 Well-Known Member

    So what cobs you running? If i remember correctly it was 3590's ?
     
    ttystikk likes this.
  9.  
    Godfather420

    Godfather420 Well-Known Member

    It's looking like 1818 are the bang for the buck, Any naysayers?
     
  10.  
    Godfather420

    Godfather420 Well-Known Member

    or maybe the cxb's....... and then there are the cheap 1212's what will i ever do.
     
  11.  
    SSGrower

    SSGrower Well-Known Member

    I hate you. JK :clap:
     
    Godfather420 and ttystikk like this.
  12.  
    ttystikk

    ttystikk Well-Known Member

    Done. Let's do this asap before I reconfigure my setup and it becomes much harder to do.
     
  13.  
    ttystikk

    ttystikk Well-Known Member

    Cree CXB3590 3500K 80 CRI CD bin 72V, four to a Meanwell HLG-185H-C700B driver with the dimming leads capped so it pulls 8% over max, for a total of 54W per chip x 4 chips = 216W, driver adds the difference to get a Kill-a-Watt verified 225W from the wall. King Brite glass 80 degree lenses round out the optics package.
     
  14.  
    qballizhere

    qballizhere Well-Known Member

    For me the decision was easy I have 96 sq feet of flowering canopy and if i choose the 1212 I would need 71 of the 1212 cobs @1.4A to equal 48 of the 1818 @ 1.4A
    so 1212= $923
    1818=$1056
    Ok $125 difference so far
    Drivers I wanted built in software dimming. so that leaves you with the elg drivers right now. Soon the hlg will be available with built in software dimming.
    so 1212 uses 36v I would do elg-240-36-d2 you would need approx 18 drivers drivers but the best efficiency is below 50W max amperage is 2.7A
    The 1818 uses 54v and need 16 drivers best efficiency is below 150w max amperage is 4.1A
    so the difference would be $25 paying $50 a driver. for me it would come down to less drilling and screwing in heat sinks mounting cobs and wiring. With the driver I listed it puts out 4.45A so its easy math figuring out how many per driver yes its wired in parallel so if you lose a cob the other 2 are still fine. this is the main reason I switched from 2.1A to 1.4A by just adding 3 cobs per driver instead of 2 I didnt want anything to happen if a cob went down and it got the full 4.45A would it still run sure but I didnt want to run at full power
     
    Joe34 likes this.
  15.  
    Godfather420

    Godfather420 Well-Known Member

    Nice use of space on that driver.
     
    ttystikk likes this.
  16.  
    ttystikk

    ttystikk Well-Known Member

    I cribbed the combo from right here on RIU.

    The bar shape and layout were my idea.
     
  17.  
    Godfather420

    Godfather420 Well-Known Member

    So I guess I'm kinda going at this backwards then. I started with what layout I want 3x3 cob. Then I broke down the power from the wall I wanted use. Max 650w. Then i tried to make it as efficient and moderately priced from the calculators.

    When you say that you would need 71 of the 1212 vs 48 to equal the same 1818's, in what measurement are you referring to?


    1212 3000K80Min 108 COBS @1400 mA ON 1.813 PROFILE HEATSINK
    192 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
    Total power watts at the wall: 5909.92
    Cobs power watts: 5555.33
    Total voltage forward: 3968.09
    Total lumens: 833255.69
    Total PAR watts assuming 10% loss: 2286.37
    Total PPF: 12346.41
    PPFD based on canopy area: 692.16
    PAR watts per sq.ft.: 11.91
    Cob efficiency: 45.73%
    Power watts per sq.ft.: 28.93
    Voltage forward per cob: 36.74
    Lumens per watt: 149.99
    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: 2999.88
    umol/s/W: 2.22 LER: 328.00 QER: 4.86
    Heatsink length passive cooling @120cm^2/heatwatt: 3566 inches
    Heatsink length active cooling @40cm^2/heatwatt: 1189 inches
    COB cost dollar per PAR watt: $0.57
    Electric cost @12/12 in 30 days: $180.84
    Electric cost @18/6 in 30 days: $271.27
    Cost per cob: $12.0
    Heatsink cost per inch cut: $0.66
    Total cobs cost: $1296.0
    Total heatsink passive cooling cost: $2353.56
    Total heatsink active cooling cost: $784.74


    1818 3000K80Min 108 COBS @1400 mA ON 1.813 PROFILE HEATSINK
    192 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
    Total power watts at the wall: 8516.97
    Cobs power watts: 8005.96
    Total voltage forward: 5718.54
    Total lumens: 1226849.87
    Total PAR watts assuming 10% loss: 3366.36
    Total PPF: 18178.32
    PPFD based on canopy area: 1019.11
    PAR watts per sq.ft.: 17.53
    Cob efficiency: 46.72%
    Power watts per sq.ft.: 41.70
    Voltage forward per cob: 52.95
    Lumens per watt: 153.24
    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: 4243.16
    umol/s/W: 2.27 LER: 328.00 QER: 4.86
    Heatsink length passive cooling @120cm^2/heatwatt: 5044 inches
    Heatsink length active cooling @40cm^2/heatwatt: 1681 inches
    COB cost dollar per PAR watt: $0.74
    Electric cost @12/12 in 30 days: $260.62
    Electric cost @18/6 in 30 days: $390.93
    Cost per cob: $23.0
    Heatsink cost per inch cut: $0.66
    Total cobs cost: $2484.0
    Total heatsink passive cooling cost: $3329.04
    Total heatsink active cooling cost: $1109.46
     
  18.  
    Godfather420

    Godfather420 Well-Known Member

    As for dimming, definitely be running type b's. Just finished up our custom pcb that will control 4 channels of drivers and 2 fans.
     
    ttystikk likes this.
  19.  
    Godfather420

    Godfather420 Well-Known Member

    Now on to color and cri....
     
  20.  
    Godfather420

    Godfather420 Well-Known Member

    1818 3000K80Min 108 COBS @1100 mA ON 1.813 PROFILE HEATSINK
    192 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
    Total power watts at the wall: 6566.84
    Cobs power watts: 6172.83
    Total voltage forward: 5611.66
    Total lumens: 980036.89
    Total PAR watts assuming 10% loss: 2689.13
    Total PPF: 14521.28
    PPFD based on canopy area: 814.09
    PAR watts per sq.ft.: 14.01
    Cob efficiency: 48.40%
    Power watts per sq.ft.: 32.15
    Voltage forward per cob: 51.96
    Lumens per watt: 158.77
    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: 3209.87
    umol/s/W: 2.35 LER: 328.00 QER: 4.86
    Heatsink length passive cooling @120cm^2/heatwatt: 3816 inches
    Heatsink length active cooling @40cm^2/heatwatt: 1272 inches
    COB cost dollar per PAR watt: $0.92
    Electric cost @12/12 in 30 days: $200.95
    Electric cost @18/6 in 30 days: $301.42
    Cost per cob: $23.0
    Heatsink cost per inch cut: $0.66
    Total cobs cost: $2484.0
    Total heatsink passive cooling cost: $2518.56
    Total heatsink active cooling cost: $839.52


    CXB3590CD36V3500K 108 COBS @1.75A ON 1.813 PROFILE HEATSINK
    198 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
    Total power watts at the wall: 7136.17
    Cobs power watts: 6708
    Total voltage forward: 3833
    Total lumens: 1097429
    Total PAR watts assuming 10% loss: 3192
    Total PPF: 14842.8
    PPFD based on canopy area: 806.9
    PAR watts per sq.ft.: 16.12
    Cob efficiency: 52.87%
    Power watts per sq.ft.: 33.88
    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: 3161
    umol/s/W / CRI: 4.65 / Estimated
    Heatsink length passive cooling @120cm^2/heatwatt: 3758 inches
    Heatsink length active cooling @40cm^2/heatwatt: 1253 inches
    COB cost dollar per PAR watt: $1.61
    Electric cost @12/12 in 30 days: $218.87
    Electric cost @18/6 in 30 days: $328.05
    Cost per cob: $47.62
    Heatsink cost per inch cut: $0.66
    Total cobs cost: $5143
    Total heatsink passive cooling cost: $2480
    Total heatsink active cooling cost: $826

    Well by this math, I'll take the 1818
     

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