New Experimental Advanced DIY Designs.

stardustsailor

stardustsailor

Well-Known Member
If I knew to answer to that question ,only ......

That's the whole point ....
To find out per overall power used ,how one has to balance the spectrum ,accordingly ....

Spectrum has to change ,if overall powers used change ...(increase/decrease


Sun has about 400 Watt / ^m2 of light PPD ,from 400 to 700 nm ....(max value at Earth surface )
(leave out the complex power/spectral changes during daytime and date ,weather ,ect )
Most of this power is green light ....


So ...
 
stardustsailor

stardustsailor

Well-Known Member
Way complex matter ... Plants utilise light in many different aspects & ways .....

First ,spatially .. Other wls new leaf tissue absorbs most ,other wls older -lower leaf tissue absorbs ... The same plant ,favors absorption of different wls to different parts of plant ....


Second ...By time ...(duration) Some wls that are "scarce" during most of day ,and only for a while they are really abundant ,get absorbed really in high rates ... But not all of their photons used for driving PS ,or even they don't have highest RQE ... Some others that they are always abundant during daytime ,get less absorbed ,but their few harvested photons ,are used at 100 % !!!

Aging also of leaf tissue ... Aged old leaves prefer the always-there-abundant-photons ... Along with the rest ,if possible ...


third: by overall power ... The more powerful the light ? the less the "most wanted" wls (most absorbed ) are utilised as photon energy ....

By direction/angle...

By spectral quality .. ...

plenty of factors to be taken under consideration ....

But still ,the solution to all ,is only , in front of our eyes ....

Every day rising from East ....
 
PetFlora

PetFlora

Well-Known Member
stardustsailor said:
If I knew to answer to that question ,only ......

That's the whole point ....
To find out per overall power used ,how one has to balance the spectrum ,accordingly ....

Spectrum has to change ,if overall powers used change ...(increase/decrease


Sun has about 400 Watt / ^m2 of light PPD ,from 400 to 700 nm ....(max value at Earth surface )
(leave out the complex power/spectral changes during daytime and date ,weather ,ect )
Most of this power is green light ....


So ...
Click to expand...
Could it be this simple?

Example 35w panel X 40% (Green 500-550)= 14w of green, OR, would the 40% only be beneficial if the OVERALL wattage (X 4-5 panels @ 35w) is greater than ~ 100w, 150w...?

BUT, less than 90 total watts < 40%????
 
stardustsailor

stardustsailor

Well-Known Member
He-he-he .....

Plant's use green light ...
Thing is ....

That they are used to really high amounts of green light ....
When under strong & prolonged direct sunlight....

So they've evolved,to utilise it (as the most abundant wls ) in way different ways ,
than human logic specifies as " abundant energy source explotation policies " ....

Way different " explotation & action schemes " ....

Plants probably "eat" all wls .....

When " in need"* they prefer the blue and red ones,which they shallow, without even chewing !!! .....
*(low light conditions )


When in a "everythin's ok ! "** state ..
**(much light !!! )
Then ....
They just try a bit of all ,of what's on the menu ....

Hm...
 
stardustsailor

stardustsailor

Well-Known Member
PetFlora said:
Could it be this simple?

Example 35w panel X 40% (Green 500-550)= 14w of green, OR, would the 40% only be beneficial if the OVERALL wattage (X 4-5 panels @ 35w) is greater than ~ 100w, 150w...?

BUT, less than 90 total watts < 40%????
Click to expand...
Yes ,I think that 40% green is way too much for overall powers under 100 Watt (of light )
Although HPS 400 Watt with 120 Watts of light ,with ~40 % of green ,grows just fine ..Hmmm....

..It's complex ,enough ...

I prefer a 25-30% of green for 4 x 35 Watt ( 140 Watt of leds ..Not of light ...)
Although ,I think that even a 20% would be nice ...(at low light fluxes i.e . ~ 70 Watt as of 4x35 Watt SSL )
 
stardustsailor

stardustsailor

Well-Known Member
......Ok ....
Just .....for fun ...

sun vs SSL 2700 K.jpg

SSL WW 2700 K has all the red wls needed ...
More than enough...

5-6 x NW 5000 K will " rise & widen "( not much though ) the blue / green part of 30x WW curve ...

Approaching-even more - the curve of sunlight ..(at that blue/green area ...)
...
 
PetFlora

PetFlora

Well-Known Member
stardustsailor said:
Yes ,I think that 40% green is way too much for overall powers under 100 Watt (of light )
Although HPS 400 Watt with 120 Watts of light ,with ~40 % of green ,grows just fine ..Hmmm....

..It's complex ,enough ...

I prefer a 25-30% of green for 4 x 35 Watt ( 140 Watt of leds ..Not of light ...)
Although ,I think that even a 20% would be nice ...(at low light fluxes i.e . ~ 70 Watt as of 4x35 Watt SSL )
Click to expand...
Yep, it occurred to me that the basis point would be 400w @ 40%. Whether everything less is a simple fraction is well... who knows? Perhaps < 100 w of light ~ 20% green
 
stardustsailor

stardustsailor

Well-Known Member
Dimmable ...
&
Adjustable CRI (red/white channels ) ....

Product Nominal voltage Nominal wattage Beam angle Color temperature Luminous flux
LEP -800-930-HD-C999.00 V ( ???? )9.00 W130 °3000 K800 lm
LEP -800-840-HD-C999.00 V9.00 W130 °4000 K800 lm
LEP-3000-930-HD-C999.00 V39.00 W130 °3000 K3000 lm
LEP-2100-840-HD-C999.00 V25.00 W130 °4000 K2100 lm
LEP-2100-930-HD-C999.00 V25.00 W130 °3000 K2100 lm
LEP-3000-840-HD-C999.00 V39.00 W130 °4000 K3000 lm
LEP -2100-830-C999.00 V34.00 W130 °3000 K2100 lm
LEP -2100-840-C999.00 V31.00 W130 °4000 K2100 lm
LEP-1500-930-HD-C999.00 V17.00 W130 °3000 K1500 lm
LEP-1500-840-HD-C999.00 V17.00 W130 °4000 K1500 lm


Family data sheet





More info : http://www.osram.com/osram_com/products/led-technology/light-engines/prevaled-core-hd/prevaled-core-hd/index.jsp


Purchase Online Stores :

http://www.led1.de/shop/lng/en/osram-led-solutions/osram-prevaled-core/

http://www.led1.de/shop/lng/en/osram-prevaled-core-lep-3000-930-hd-c-warm-white.html

http://www.led1.de/shop/files/Osram/PrevaLED/OSRAM_PrevaLED_Data_Sheet.pdf
 
HiloReign

HiloReign

Well-Known Member
This is pure speculation, though, much like plants control exudates to attract bacteria/fungi for their benefit (also controlling pH...), I believe that they can tune what WLs they "eat". By controlling what WLs they eat (part of their "diet"), they maintain a healthy "diet", granted they have a full course menu. Much like nutrients, too much or too little (of this WL or that...) can cause harm, deficiency or become something stressful for the plant that a gardener may or may not know about (it may not show blatant signs, because plants are hardy and cope with what they must).

Now, more often than not with indoor lighting, the plant is thrown under what someone hopes to be light that is "good enough" and is left to grow its entire life there. Sure, the plants do good and in lots of cases many people come out of their gardens with some top quality herb. But think for a moment: If we gave plants exactly what they need rather than some or most of it, the results can be better. An indoor environment can be fine tuned to match or even surpass an outdoor environment (but it will be a long time before that happens...).
 
PetFlora

PetFlora

Well-Known Member
This brings up a question that has been rolling around my brain- watts per diode. The above is rated at 9w, so each diode is only ~ 0.23w

Is the bottom line lm/w which in this case is 88
 
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