Grow Project : Sun_burns Every Summer !

Well-well ....
Time has come for another led grow ....

Let me show you folks, some details :


The space : Silverbox Evolution Grow-tent 1 x 1 x 1,6 m ( ~ 3x3x5 feet )
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Exaust : S&P TD Silent 100/160 with selection switch ( set at 100m³/h )

Act.Carbon Filter: CAN

Other :UVC sanitising lamp ( for pre/post cultivation sanitising )
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The light :

1x GD-SDS Box Led grow system .
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Which features :

-36 x Osram Oslon SSL 80 leds
( 24x Warm White 2700° K LCW CQ7P.CC & 12 x Hyper Red 645-660 nm LH CP7P ).

-3x Recom RCD-48 -07 drivers .

-2x 80 mm_3000rpm_Industrial Quality fans .
Each fan => 30-57 Volts operating range . ~1.75 Watt (48 V).Flow:1.027 m^3/min (48 V).Noise: 32.11 dB (48 V).

-MeanWell SE-350-48 main PSU .

-200x160x40 mm 1050 AA heatsink .

-Analog Dimming Control ( 200-710 mA ).

-Power Range *at plug.PSU_Bucks_Fans_leds :
22 Watts *leds at 200mA/fans at lowest setting .
100 Watts *leds at 710 mA/fans at max setting .

-'Thermal Copper Pour' enhanced metal core pcbs.

-Corrosion resistant construction,offering durability to environments with lots of
water vapours and /or high humidity .Resistant to fertiliser/salt/pH regulators & other chemicals spills /droplets/sprays ,used commonly at plant cultivation.

-Main PSU Fan Control :
PSU can supply led box fans , from ~39.8 Volts up to ~ 57,5 Volts ...
(Buck-drivers need minimum ~37 Volts to drive the 36 Oslons ... )
(Psu has it's own cooling fan also ,automatic switched on /off depending on PSU operational temps... )

At 39.8 V ,fans work really silent ...
At 57.5 V fans are kinda noisy !!!
Set a sensor ,at middle fin channel (no rotating fan-blades above it ) of heatsink,
approx above middle mcpcb ....
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-Ambient temp : ~ 18.5 °C
-Leds driven at 710mA.
Heatsink temps when :
Fans working at most silent (s_lowest ) setting (39.8 V ) : 23.8-23.9 °C
Fans working at "normal" setting (48 V ): 23.3-23.2 °C
Fans working at max setting (57.5 V ): 23.1-23.0 °C
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So .....
Worst case :....... Heatsink gets ~5.5 °C above ambient temperature ,leds driven at 710 mA !

To be continued ....

Originally Posted by stardustsailor

Sun ...
....
Here ,I come ....

Hey, the SUN, can you shine a small bunch of light to Amsterdam please? Here has been raining and cold for a long time. Thanks to the LED lamps, or where can I get some pots for entertainment at the coffee shops??