3 SqFt Build

[cmar]

If any of you have some input for this i would aprecate it!
I'm setting up a small 24"x18"x18-24"high space to veg some plants.
I will grow out to about 12" before setting outside to flower.

I have an existing light i used for seedlings, and some 24V CV drivers in 60w and 96w I would like to use.
Light: Feit GLP24FS/30W/LED
Drivers:
L.T.F DS60W24VD010RE-0020 60w 24v 2.5a 0-10v CV
AC Electronics AC-A60VD24H2.5 60w 24v 0.25-2.5a 0-10v CV
Jesco DL-PS-100/24-JB-DIM 96w 24v 4.25a triac CV

I will add 3 or 4 LT-F562B strips.

will these operate effectively at 24V CV if the driver current is in range?
This is my math

Capture 2.PNG (5.96 KiB) Viewed 930 times

Left to right is 3x60w, 3x96w, 4x96w
I adjusted the current to get the power in the driver range
the 3x90w volts concerns me, since i have it set to max in the engine

[PeteR_1]

The Calculations look good, adequate for your grow area, but Grow Lights should be "Sized" by Grow Area and Plant Specific Growth Stage... download/file.php?id=4438

Some Calculations:
24" * 18" = 432 sq in / 144 (sq in / sqft) = 3 sq ft or ~ 0.3 m2
3 * 50 (Late Veg PPF/sqft) = 150 PPF (umol/s req'd min.)
[0.3 m2 * 500 PPF/m2 (Late Veg PPFD) = 150 PPF req'd]
150 / 2.5 PPE = ~ 60 Watts req'd

Strip Selection:
F562B, 560mm, 4500 Lm, ~ 64.8 PPF, 24 Vf, 25.8W, ~ 2.51 PPF/W(Calculated)
150 PPF / 64.8 PPF = 2.31 (~ 3 Strips)

Driver Selection:
60 Watts * 2.51 PPE (3 strips) = 150.6 PPF
90 Watts * 2.51 PPE (4 Strips) = 225.9 PPF

BTW, The Samsung Engine Calculator Tool should have more info for better calculated data;
General Data;
Flux - Typical
Vf - Typical

System Configuration;
Driver Efficiency - xx% (actual Driver Efficiency)

Good Luck

[cmar]

The Calculations look good, adequate for your grow area, but Grow Lights should be "Sized" by Grow Area and Plant Specific Growth Stage... download/file.php?id=4438
...

Thanks for the wealth of information and calculations.

My biggest question, concern, being new to LED lighting, is if the 24v cv will work for all these all the combos.
Will pumping 24v at .88 amps be detrimental?

I think I'll start with the 60w, I didn't want to buy a $20us+ triac dimmer for the 96w driver.

If the first grow seems lacking in light I can buy the triac and go to the 3 or 4 strip 96w.


I hope to be able to set up a larger space in the next year or so, so I will be able add to the strips and get an appropriate Meanwell driver.

This project is to get me going cheap for a couple off-season grows, taking advantage of the mild winter temps here.

Thanks
C

[cmar]

So here is the finished (work in progress) product.
Mounted on .063 aluminum sheet ( I would prefer .125, but this was free!)
I goofed on the size. It's 24 x 15 in.
I'll see once I get the ventilation in, but I think I am going to mout a 120mm fan about 1/4" above the light blowing straight down for cooling so the 24x15x24 grow chamber doesn't get to hot. Without ventilation in gets to 95f with the room at 72f.