Why do some guys wats to still use mono led with cobs?

[febisfebi]

Hey BG! Not sure I understand this comment. Efficiency in converting electrical energy to light + heat is where LEDs shine (pun intended!). 1000 watts of LEDs at 61% efficiency produces 390 watts of heat, while an 1000 watts of HID at 35% produces 650 watts of heat. Even considering the conversion of some photons to heat, the difference is significant. Not sure about toasters, but since little of their output is light I would guess that the vast majority of wattage is heat. I must be missing something?

I was thinking the same thing, in fact I typed up a post almost identical to yours, but my computer crashed before I could post it and I didn't want to retype at that time. I am still curious about this though.
Also, how do you get 61% efficiency? I thought 56% at 50w was the highest efficiency.

 

[ttystikk]

Hey BG! Not sure I understand this comment. Efficiency in converting electrical energy to light + heat is where LEDs shine (pun intended!). 1000 watts of LEDs at 61% efficiency produces 390 watts of heat, while an 1000 watts of HID at 35% produces 650 watts of heat. Even considering the conversion of some photons to heat, the difference is significant. Not sure about toasters, but since little of their output is light I would guess that the vast majority of wattage is heat. I must be missing something?

All that light lands on something and turns to heat. One way it turns to heat is when the plant transpires and thus the heat becomes additional humidity.

 

[JorgeGonzales]

Hey BG! Not sure I understand this comment. Efficiency in converting electrical energy to light + heat is where LEDs shine (pun intended!). 1000 watts of LEDs at 61% efficiency produces 390 watts of heat, while an 1000 watts of HID at 35% produces 650 watts of heat. Even considering the conversion of some photons to heat, the difference is significant. Not sure about toasters, but since little of their output is light I would guess that the vast majority of wattage is heat. I must be missing something?

All you are missing is "Even considering the conversion of some photons to heat, the difference is significant." Change "some", to "all" and there you go.

All light heats up a sealed plant-free room, but in an unsealed room HID heats the canopy up directly, whereas most heat from the LEDs is whisked away by ventilation before it raises temperatures. Plus photosynthesis.

 

[ttystikk]

All you are missing is "Even considering the conversion of some photons to heat, the difference is significant." Change "some", to "all" and there you go.

All light heats up a sealed plant-free room, but in an unsealed room HID heats the canopy up directly, whereas most heat from the LEDs is whisked away by ventilation before it raises temperatures. Plus photosynthesis.

RH is a big factor.

 

[The Green Griffin]

I was thinking the same thing, in fact I typed up a post almost identical to yours, but my computer crashed before I could post it and I didn't want to retype at that time. I am still curious about this though.
Also, how do you get 61% efficiency? I thought 56% at 50w was the highest efficiency.

You can run CBX 3590s at 25 watts with a 700 ma driver, as I recall that is 64% efficiency. Gets expensive quickly as sqft ramps up though......I'm planning on running 1050 ma (~40 watts and 61% efficiency) and still wince at the number of cobs needed.....and the $$$.

 

[ttystikk]

You can run CBX 3590s at 25 watts with a 700 ma driver, as I recall that is 64% efficiency. Gets expensive quickly as sqft ramps up though......I'm planning on running 1050 ma (~40 watts and 61% efficiency) and still wince at the number of cobs needed.....and the $$$.

I went with 50W per COB and it was still plenty spendy.

 

[RuRu.The.Half.Elf]

All those videos in thread and not one explains mono+cob lighting.

It's obviously required if one wants to achieve plaid.

Also: I have nothing intellegent to contribute to this thread. LoL

 

[Big smo]

All those videos in thread and not one explains mono+cob lighting.

It's obviously required if one wants to achieve plaid.

Also: I have nothing intellegent to contribute to this thread. LoL

I'll post some photos of my recent mono-cob experience if you like .It was by far my best run yet. I don't know all the techy bs but it makes sense to me. Adding a few more watts in a wider spectral range. Who wouldn't do it? Unless money was an issue cause it does get pricey adding them in.

 

[RuRu.The.Half.Elf]

I'll post some photos of my recent mono-cob experience if you like .It was by far my best run yet. I don't know all the techy bs but it makes sense to me. Adding a few more watts in a wider spectral range. Who wouldn't do it? Unless money was an issue cause it does get pricey adding them in.

I was just making a joke at the disco effect Mono's have. I myself was thinking about putting a sink on an aluminum pie dish with some Mono's like a 3(630)1(730)4(660) for a fun pun pi pie.

 

[ttystikk]

I was just making a joke at the disco effect Mono's have. I myself was thinking about putting a sink on an aluminum pie dish with some Mono's like a 3(630)1(730)4(660) for a fun pun pi pie.

Nothing I've grown under COB LED has acted like it needed any supplementation at all.

 

[OneHitDone]

I could be way off and not have a clue what I am talking about but I kinda doubt anyone's plants are seeing a uniform spectrum mixing cobs with mono's.
Someone needs to figure out a way to have all the different colors under 1 big lens?

 

[REALSTYLES]

 

[Big smo]

Nothing I've grown under COB LED has acted like it needed any supplementation at all.

It's also not hurting anything. I just chopped some of the largest buds I have seen in my life under the mono-cob lights. I used the monos for veg and cobs and monos for flower.

 

[Big smo]

Dude you are the least organized person I have ever seen. Lights looking good but my OCD would t let me finish the video. Lol keep up the good work. Oh and I also ran my angle the other way arounds with the sides up. Don't thing it matters

 

[BM9AGS]

You're the man realstyles.

When are your heatsink and driver prices gonna be online?

 

[REALSTYLES]

You're the man realstyles.

When are your heatsink and driver prices gonna be online?

200w kit $369 and 250w kit $469. I haven't made the Massive Passive kit yet but will once a make a light that requires that sink.

 

[ttystikk]

200w kit $369 and 250w kit $469. I haven't made the Massive Passive kit yet but will once a make a light that requires that sink.

What are those kits comprised of?

 

[REALSTYLES]

What are those kits comprised of?

cobs, holders, reflectors, heat sinks and driver and I'm gonna add the M screws

 

[ttystikk]

cobs, holders, reflectors, heat sinks and driver and I'm gonna add the M screws

If those prices are for top bin CXB3590 and Meanwell drivers, those are some damn good prices. Is that what's in them?

 

[REALSTYLES]

If those prices are for top bin CXB3590 and Meanwell drivers, those are some damn good prices. Is that what's in them?

Yes indeed. I've got Cobalt drill bits that are better than Dewalt as well I can get what ever size you guys need. I used to have a Industrial Tool Supply Co.