coreywebster
Well-Known Member
Hello.
Im planning on building a light for 4x4 using 12 vero29 4000k@700ma. I hope Its sufficent light with less problem with lightbleach and I can have them about 20" from canopy.
Can I can run them on 1 Meanwell hlg-320-c700b? My main concern is the solderless connectors (pico ez-mate)that are rated at 130v max, ecept for that they seem to fit that driver.
If anyone knows better driving options, plus feel free to post other ideas.
VERO29.V2.0.4000K 12 COBS @0.7A ON 1.813 PROFILE HEATSINK
16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @11 CENTS PER KWH
Total power watts at the wall: 318.09
Cobs power watts: 299
Total voltage forward: 427
Total lumens: 45753
Total PAR watts assuming 10% loss: 127
Total PPF: 586.74
PPFD based on canopy area: 394.73
PAR watts per sq.ft.: 7.94
Cob efficiency: 47.23%
Power watts per sq.ft.: 18.69
Voltage forward per cob: 35.6
Lumens per watt: 153.02
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: 158
umol/s/W / CRI: 4.62 / 80CRI
Heatsink length passive cooling @120cm^2/heatwatt: 188 inches
Heatsink length active cooling @40cm^2/heatwatt: 63 inches
COB cost dollar per PAR watt: $2.3
Electric cost @12/12 in 30 days: $13.1
Electric cost @18/6 in 30 days: $19.39
Cost per cob: $24.38
Heatsink cost per inch cut: $0.66
Total cobs cost: $293
Total heatsink passive cooling cost: $124
Total heatsink active cooling cost: $41
The bold text would suggest its only about half the amount of light you would want in a 4x4.. So only really good for a 2x2 - 2.5x2.5 area.
I'm not sure what sort of price you are paying for the vero29 but the citizen 1212 may well be cheaper and slightly better efficiency. The price on the calculator show the vero been twice the price as the 1212 but the price data may be out of date.
What price are the vero29?