yeah buddy. Green Gene championed the 90 deg LEDIL angelinas back in the day, so check out his vids too for comments on their performance.
I am going to copy and paste a response that I sent to someone via email this morning. check it out and see if it applies to you. Any others that read it, make sure my numbers and calcs are correct. my feelings wont be hurt to make edits or corrections.
I would recommend a universal bar type system. I am not including shipping in these price estimates, or quantity discounts .
I am going to recommend a slightly higher drive current setup for you to minimize upfront costs while preserving efficiency and flexibility to dim later for higher efficiency once you have enough bars to cover the space fully. This spec will cost you more on heatsinks upfront, but you will get an extra 50w per bar with this setup.
BAR MODEL 250w each wall dissipation @ 51-52% efficient for 130 PAR watts per bar. (120 heat watts per bar)
(4) Cree cxb3590 36volt version : mix of 3500k, 4000k, a couple 5k total. top bins (see incl spread sheet of top bin codes)
suppliers: Kingbrite, Cutter Electronics, Pacific Light Concepts. not sure of current coupon codes, but check!
best price with a discount code from pacific light concepts is $43.02 each
(1) meanwell HLG 240h-c1750b : <--- get the b version here, so you can dim for higher efficiency later runs 4 cobs at 62 watts each
suppliers: Bravo Electronics, Mouser, Online Components.com ($75ea)
(1) 30-34" heatsink for active cooled(with a computer fan on top of each bar), or go 42-48" for a passive setup, heres the math on the heatsink based on attached spreadsheet titled (HeatsinkUSA)
the 5.886"
www.heatsinkusa.com profile has 40.31 in2 of surface area per one inch of length. So to handle the 120 heat watts passively, the bars will have to be pretty long at 42-48" ($75 per bar)
(4) Ideal cree cob holders part# 50-2303CR (
newark.com) ($2.50 ea)
thermal paste
4-40 or 6-32 mounting screws (amazon)
a bunch of 18 gauge solid core wire
Wago connectors for easy connections on DC led & AC plug ends. 222-412 lever nuts ($15 per 50 pack)
So assuming you buy a bunch of wire, connectors, thermal paste and screws, the cost of the components per bar will be approx: $332
Each bar will be the equivalent of a 342watt HPS single end.
ROI Calculations
Each bar will save you 92 watts at the wall over HPS. And 314 BTU of heat per hour over HPS.
Per day savings in a 12/12 flowering room will be (.092 kW)(12 hr) = 1.104 KwH savings per day per bar. @ your rate?? assuming 15 cents/KwH
$0.1656 savings per bar per day. or $5 per month per light over HPS, ($60 per year savings , per bar over HPS)
Lets assume a highend 600w HPS with a nice big air cooled reflector and a digital ballast, hortilux bulb costs $400-500
Two of these bars will crush it since they are equivalent to 684w of HPS, but their cost is $332ea x2 = $664
At $164 price difference you are looking at ROI in 2.73 years based off of only electrical savings, not very impressive right?
when you factor in HVAC savings of 3768 BTU per day, 113,040 BTU per month, 1,356,480 BTU per year, things start making sense.
(impossible to calc BTU savings without knowing your HVAC system and environmental factors)
In closing, I don't know your skill level as a grower, but I can pull around 0.88 grams per watt with 600w HPS. (528g per run)
I can pull 1.5 GPW ++ all day long with cree cobs. If I had these bars, I would estimate 375g per bar per 8-9 wk run. or (750g per pair of bars)
So when you factor in increased production of an extra half pound of bud per pair of bars, all the sudden these LEDs start paying themselves off very very quickly.
I hope this helps and wasnt too confusing. let me know if you have any more questions.
looks fun though.
