I also got some new data concerning the LED modules that I am currently using for this grow.
As you guys might know, I've built my own full spectrum quantum board and I've been testing these lights on this grow. My design works way more efficient and produces way more light compared to the industry standart Atreum boards and 240W Meanwell drivers.
I've compared the PPFD results on the same wattage and they can be considered close eventhough my lights are providing at least %15 more. I've measured the heat of drivers and LED's as well as the heatsinks.
As you guys can see, my heatsink is huge compared to Atreum's or any other quantum board manufacturer's. Let me share the results with you guys;
As you can see, drivers are almost running at the same heat but there is a great difference on heatsinks and LED's themselves. This is where performance and lifetime of these LED modules differ. ELG-240 is a better driver than XLG-240, since the ELG has dual transformers while the XLG has a single one, and this explains the heat difference on these different drivers. I deliberately used the better driver for Atreum boards to emphasise the game changing factor on these passive cooling LED designs, which is a greater heatsink.
My choice of a bigger heatsink explains the temperature difference between these LED's. My design allows the diodes to operate six degrees Celsius cooler. That is huge but since I have limitations on my driver, I am not cranking this module all the way up. This puppy provides a hell lot more light with ELG and HLG series drivers but I don't recommend cranking these that much on summer. Tent is around 30 degrees and I am counting on my strong ventilation for this bloom period.
When your LED's operate at a lower temp. they don't want to pull more current than they should. If a diode gets hotter, then it needs more current and six degrees difference is huge if we are talking efficiency. Lifetime of the diode will also increase because it is mostly about the amount of current flowing through the diode.
My final design will be here in a month. I've added Osram Oslon 660nm deep red and upgraded the module to 300W. I will be using Osram drivers instead of Meanwell. I think these are slightly more efficient than Meanwell's and has more lifetime. My friend in the industry told me that Osram drivers are tier 1 drivers, while Meanwell's are considered tier 2. I asked him about the Inventronics and he advised against these as well. I will be using 360W driver for that module but I'll drive the board just enough to get 300W actual from the wall. I've also designed a 150W version of the same module, to be driven with a 180W Osram driver. I can't wait to get my hands on the final product and share it with you guys.
Cheers