hi i was thinking about eb gen2 or eb gen3 ... am i thinking right?PeteR_1 wrote: ↑Mon Feb 01, 2021 1:31 pmTen (10) Bridgelux 280 mm EB Gen2 LED Strips can provide adequate PPFD coverage of your 0.225 sq m area with your 60 Watt LED Driver (10 Strips, 3500K, 10500Lm, 157 PPF) will be running relatively "Soft", requiring minimal heatsinking and some stiffening support, an Aluminum Sheet or Baking Pan?.FREESCRAVEN wrote: ↑Mon Feb 01, 2021 10:29 am... I'm starting a new microgrow project in a space : 50 x 45 x 60H cm
Lately I have always used 60w quantum boards, but some chips have burned out and I have neither the knowledge nor the time to repair them, so I would like to replace them with cobs or strips using the driver I have
The Meanwell LPF-60D-24.
Which cobs or strips configuration do you suggest with this driver? The goal is to have a lamp that doesn't get very hot.
Thank you all!
Good Luck and you're welcome.
For Comparison an HLG 65 V2 LED Light... https://horticulturelightinggroup.com/c ... cts/hlg-65
28 x 24 cm, 4000K, 10800Lm, 156 PPF (umol/s)Some Calculations:
0.50 m * 0.45 m = 0.225 m2
a... 0.225 * 800 (PPFD Flower CO2 enriched) = 180 PPF req'd (min)
180 PPF / 2.5 PPE (PPE/W) = 72 Watts
b... 0.225 * 600 (PPFD Flower) = 135 PPF req'd (min)
135 PPF / 2.5 PPE (PPE/W) = 54 Watts
Selected Driver:
LPF-60D-24, 14.4 - 24V CC Region, 2.5A @ 24V, 60W, Dim 10 - 100%
MeanWell LPF-60D-24 Datasheets... https://www.meanwell.com/Upload/PDF/LPF ... D-SPEC.PDF
Strip selections:
Bridgelux Gen2 BXEB-L0280Z-3500K, 280 x 24mm, 80CRI, 1195Lm, 17.9 PPF, 175Lm/W, 2.625 PPE, 350mA, 19.5V, 6.825W
180 PPF / 17.9 PPF/Strip = 10 Strips (11950Lm, 179 PPF, 68.25 Watts)
2.625 * 60 Watts (Driver Output) = 157 PPF
60 / 0.89 (Driver Eff) = 67.4 Watts Input (at wall)
10 - Bridgelux Gen2 BXEB-L0280Z-3500K ($28.00 US)... https://www.digikey.com/en/products/det ... pxEgC6AvkA
Other Bridgelux 280mm and 340mm LED Strips... https://www.digikey.com/en/products/fil ... nmtIOpqakA
Notes:
1. Grow Lights should be "Sized" by Grow Area and Plant Specific Growth Stage... download/file.php?id=4438
2. Older "Watts per sq ft sizing" was based on ~ 1.7 PPE (1000W HID / 25 sq ft)... e.g., 40 Watts / sq ft ~ 68 PPF / sq ft (680 PPF / m2)
3. Nominal Efficiency of current LED Strips is ~ 2.5 PPE. The LED Driver "Sizing" factor or multiplier used is 1.25 (125%) of the LED's Watts for "Reserve Capacity".
4. The -AB suffix XLG and HLG series Meanwell Drivers can be "Current Limited" down to 50% (-A) and then Dimmed between "0 or 10 - 100%" (-B), e.g., HLG-480H-AB can be current adjusted down to 240 Watts (-A, 50%) and then also Dimmed 0 - 240 Watts (-B, 0 - 100%) with a connected 100K Ohm Pot. The -B suffix Drivers are a more versatile alternative than the -A suffix Drivers, can be dimmed down to 0 or 10% (0 Watts for the HLG-480H-48B) with the added 100K Ohm Pot and (IMO) should be the only other alternative to the -AB suffix drivers if dimming is required.
5. Samsung and Bridgelux LED Strips run below 50% max current require minimal to no heatsinkining...
Samsung LT-F564B... viewtopic.php?f=32&t=5872
Bridgelux Vesta 2750G... viewtopic.php?f=32&t=5761
tell me please ..
