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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

    Thanks SS
     
  2.  
    Godfather420

    Godfather420 Well-Known Member

    Ok TTys, you ready to see version 2? You and Qball seem to be my captive audience... Its showtime.
     
    Jp.the.pope and ttystikk like this.
  3.  
    Godfather420

    Godfather420 Well-Known Member

  4.  
    Godfather420

    Godfather420 Well-Known Member

    : )
     
    ttystikk likes this.
  5.  
    Godfather420

    Godfather420 Well-Known Member

  6.  
    Godfather420

    Godfather420 Well-Known Member

    Ok so next question..Who's got the best deals on citizen chips?
     
  7.  
    Godfather420

    Godfather420 Well-Known Member


    What color and cri are you running on those 1818's? Any opinions or comparisons on those versus hps or other cobs?
     
  8.  
    Godfather420

    Godfather420 Well-Known Member

    @qballizhere Ok so next question..Who's got the best deals on citizen chips?
     
  9.  
    qballizhere

    qballizhere Well-Known Member

    This is what I was referring to using my area and the 2 different cobs The number I am looking at is PPFD


    Citizen.1212C4.3000K 71 COBS @1.4A ON 5.88 PROFILE HEATSINK
    96 SQ.FT. CANOPY 93% EFFICIENT DRIVER @10 CENTS PER KWH
    Total power watts at the wall: 3858.06
    Cobs power watts: 3588
    Total voltage forward: 2563
    Total lumens: 523848
    Total PAR watts assuming 10% loss: 1437
    Total PPF: 6983.82
    PPFD based on canopy area: 783.05 <<<<<<This number here
    PAR watts per sq.ft.: 14.97
    Cob efficiency: 44.51%
    Power watts per sq.ft.: 37.38
    Voltage forward per cob: 36.1
    Lumens per watt: 146.0
    Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
    Heatsink area per inch: 260.01 cm^2
    Total heat watts: 1991
    umol/s/W / CRI: 4.86 / 80CRI
    Heatsink length passive cooling @120cm^2/heatwatt: 919 inches
    Heatsink length active cooling @40cm^2/heatwatt: 306 inches
    COB cost dollar per PAR watt: $0.62
    Electric cost @12/12 in 30 days: $139.39
    Electric cost @18/6 in 30 days: $208.84
    Cost per cob: $12.55
    Heatsink cost per inch cut: $1.74
    Total cobs cost: $891
    Total heatsink passive cooling cost: $1599
    Total heatsink active cooling cost: $532
    Citizen.1818C4.3000K 48 COBS @1.4A ON 5.88 PROFILE HEATSINK
    96 SQ.FT. CANOPY 93% EFFICIENT DRIVER @10 CENTS PER KWH
    Total power watts at the wall: 3756.99
    Cobs power watts: 3494
    Total voltage forward: 2496
    Total lumens: 520606
    Total PAR watts assuming 10% loss: 1430
    Total PPF: 6949.8
    PPFD based on canopy area: 779.24 <<<<<<< here a few points difference less than 4ppfd
    PAR watts per sq.ft.: 14.9
    Cob efficiency: 45.48%
    Power watts per sq.ft.: 36.4
    Voltage forward per cob: 52.0
    Lumens per watt: 149.0
    Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
    Heatsink area per inch: 260.01 cm^2
    Total heat watts: 1905
    umol/s/W / CRI: 4.86 / 80CRI
    Heatsink length passive cooling @120cm^2/heatwatt: 879 inches
    Heatsink length active cooling @40cm^2/heatwatt: 293 inches
    COB cost dollar per PAR watt: $1.08
    Electric cost @12/12 in 30 days: $135.75
    Electric cost @18/6 in 30 days: $203.38
    Cost per cob: $32.08
    Heatsink cost per inch cut: $1.74
    Total cobs cost: $1540
    Total heatsink passive cooling cost: $1529
    Total heatsink active cooling cost: $509
     
  10.  
    qballizhere

    qballizhere Well-Known Member

    Kingbright is $22 each but they are going on holidays until feb 6th and @CobKits may work something out for you depends how many you are getting at once.
     
    Godfather420 likes this.
  11.  
    CobKits

    CobKits Well-Known Member Rollitup Advertiser

    ive got the best selection. you may or may not save a buck or two if you order from china
     
  12.  
    Godfather420

    Godfather420 Well-Known Member

    I was working with vicky at Kingbright and I couldn't get her to budge below 24.50...Digikey has em cheaper....same thing on the power supplies she wanted 3 buck more and i still had to pay freight

    I was trying to work with you, but you seemed to be quite busy the last few days and confused me for someone else... then just fell off............
     
  13.  
    Organic Miner

    Organic Miner Well-Known Member

    I am here stalking you too! I would really like to do a water cooled setup some day; it makes sense (all nay Sayers aside)!

    I think CDI has the best prices but check cobkits.com as well. I got my 1212's last summer for less than $11/cob ( in quantity, I bought 72).
     
    Godfather420 likes this.
  14.  
    Godfather420

    Godfather420 Well-Known Member

    I don't care about the buck or two.. I'd rather support this crew : )
     
    Johnnycannaseed1 and ttystikk like this.
  15.  
    qballizhere

    qballizhere Well-Known Member

    I will also add kingbright only has 3000k and 3500k anything else and you have to order 200 from them
     
  16.  
    Godfather420

    Godfather420 Well-Known Member

    Good looking Organic! How are the 1212's treating you? Color and CRI please?
     
  17.  
    qballizhere

    qballizhere Well-Known Member

    I would go with cobkits as long as you leave 24 1818 in a few days so i can get them
     
  18.  
    Godfather420

    Godfather420 Well-Known Member

     
  19.  
    Godfather420

    Godfather420 Well-Known Member

    Uh Oh... I better get to shopping ; )
     
  20.  
    Godfather420

    Godfather420 Well-Known Member

    What color and CRI are you rocking now and what are you buying in a few days?
     

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