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crankz1

crankz1

Well-Known Member
The driver's efficiency rating. How well it converts power. I'm not the authority on this stuff either. Just a good general grasp...
 
RandomHero8913

RandomHero8913

Well-Known Member
AlexHarryy said:
about 60...

what do you mean not efficient? i am compleate 0 in physics as you can see =)
Click to expand...
The efficiency of the driver is basically how much of its energy it going to the LEDs and not to heat/conversion. Here is some examples, look at the power watts at wall and power watts at COB numbers & Cost. Small amount of cost but think about an exponentially larger grow

100% Efficient Driver

1212 2700K90Min 1 COBS @1500 mA ON 1.813 PROFILE HEATSINK
1 SQ.FT. CANOPY 100% EFFICIENT DRIVER @10 CENTS PER KWH
Total power watts at the wall: 54.50
Cobs power watts: 54.50
Total voltage forward: 36.33
Total lumens: 6199.80
Total PAR watts assuming 10% loss: 16.96
Total PPF: 92.71
PPFD based on canopy area: 997.97
PAR watts per sq.ft.: 16.96
Cob efficiency: 34.58%
Power watts per sq.ft.: 54.50
Voltage forward per cob: 36.33
Lumens per watt: 113.76
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: 35.43
umol/s/W: 1.70 LER: 329.00 QER: 4.92
Heatsink length passive cooling @120cm^2/heatwatt: 42 inches
Heatsink length active cooling @40cm^2/heatwatt: 14 inches
COB cost dollar per PAR watt: $0.71
Electric cost @12/12 in 30 days: $1.96
Electric cost @18/6 in 30 days: $2.94
Cost per cob: $12.0
Heatsink cost per inch cut: $0.66
Total cobs cost: $12.0
Total heatsink passive cooling cost: $27.72
Total heatsink active cooling cost: $9.24

80% Efficient Driver

1212 2700K90Min 1 COBS @1500 mA ON 1.813 PROFILE HEATSINK
1 SQ.FT. CANOPY 80% EFFICIENT DRIVER @10 CENTS PER KWH
Total power watts at the wall: 68.13
Cobs power watts: 54.50
Total voltage forward: 36.33
Total lumens: 6199.80
Total PAR watts assuming 10% loss: 16.96
Total PPF: 92.71
PPFD based on canopy area: 997.97
PAR watts per sq.ft.: 16.96
Cob efficiency: 34.58%
Power watts per sq.ft.: 54.50
Voltage forward per cob: 36.33
Lumens per watt: 113.76
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: 35.43
umol/s/W: 1.70 LER: 329.00 QER: 4.92
Heatsink length passive cooling @120cm^2/heatwatt: 42 inches
Heatsink length active cooling @40cm^2/heatwatt: 14 inches
COB cost dollar per PAR watt: $0.71
Electric cost @12/12 in 30 days: $2.45
Electric cost @18/6 in 30 days: $3.68
Cost per cob: $12.0
Heatsink cost per inch cut: $0.66
Total cobs cost: $12.0
Total heatsink passive cooling cost: $27.72
Total heatsink active cooling cost: $9.24
 
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