731 Watt Cob Led Fixture Design [equivalent/potential Successor] To 1000 Watt Hps De

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h4ppyf4rmer

h4ppyf4rmer

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cccmints said:

This could be really good for you. I don't see where I could have made a mistake (even though its possible of-course) and the efficiency seems to sky rocket at higher drive currents which is not strange to me with the specific COB you're using. The Vero 29 is known to perform best at higher currents. You could be pushing your fixture harder while significantly increasing your efficiency at the same time.
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for me to drive my lights harder to get a better efficiency number would cost me a lot in new/more drivers and in my electrical bill, as well as producing more heat. I consider myself doing well at over a gram/watt ( 964grams/900 watts). More than I thought I would ever achieve.

if I were starting from scratch, maybe I would consider driving the COBs harder for better efficiency ... but in my humble opinion, we're splitting hairs at this point };-)
 
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cccmints

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h4ppyf4rmer said:


for me to drive my lights harder to get a better efficiency number would cost me a lot in new/more drivers and in my electrical bill, as well as producing more heat. I consider myself doing well at over a gram/watt ( 964grams/900 watts). More than I thought I would ever achieve.

if I were starting from scratch, maybe I would consider driving the COBs harder for better efficiency ... but in my humble opinion, we're splitting hairs at this point };-)
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Hey it's up to you man...I'd convert it to a 12 COB fixture running just 75 watts over what you're doing right now and reap the benefits from a 16% efficiency increase with minimal increase in power draw. If we were talking a 5-6% efficiency increase at the same current or something I could see the whole "splitting hairs" thing but it's 16% @ 30+ more watts per diode. The chips you bought run a lot better at a higher current.

But I digress...I got berated on another forum for talking about LED without having tested it in real life. While I understand their point, I'm a science and math guy, so I thought sharing data was acceptable practice prior to building a fixture. I guess I just got a little too excited. It sucks to see what I've posted here be called, "weedology" and respected members back a comment like that. I'll be silent until I have something y'all want to see.
 
EventHorizan

EventHorizan

15,707
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cccmints said:
Hey it's up to you man...I'd convert it to a 12 COB fixture running just 75 watts over what you're doing right now and reap the benefits from a 16% efficiency increase with minimal increase in power draw. If we were talking a 5-6% efficiency increase at the same current or something I could see the whole "splitting hairs" thing but it's 16% @ 30+ more watts per diode. The chips you bought run a lot better at a higher current.

But I digress...I got berated on another forum for talking about LED without having tested it in real life. While I understand their point, I'm a science and math guy, so I thought sharing data was acceptable practice prior to building a fixture. I guess I just got a little too excited. It sucks to see what I've posted here be called, "weedology" and respected members back a comment like that. I'll be silent until I have something y'all want to see.
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Oh calm down Elroy!
I actually am following along with your posts! Keep making your point and keep giving data to back up your point.
As for the weedology comment, where u think your at Harvard? Most of what we talk is weedology! You know what we like here, big donkey dick size colas. Thats what we respect!
You can design that light with the help of Nasa, and MI3, and still wouldnt mean shit to us, untill you grew a couple twin towers under it!
So dont get your drawers in a pinch, chelax, and build you a light and grow you some mators or peppers, and when you get er done we all sing kum bi ya and revile in the light your designing for me...
Another words, calm down,
And welcome to the farm!
Help me design my 600 watt 4x4 cob array with vero..
Then if i buy this 600 watt cob cree light, i run them against each other.
Im trying to talk the dude down to 700
 
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cccmints

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EventHorizan said:
Oh calm down Elroy!
I actually am following along with your posts! Keep making your point and keep giving data to back up your point.
As for the weedology comment, where u think your at Harvard? Most of what we talk is weedology! You know what we like here, big donkey dick size colas. Thats what we respect!
You can design that light with the help of Nasa, and MI3, and still wouldnt mean shit to us, untill you grew a couple twin towers under it!
So dont get your drawers in a pinch, chelax, and build you a light and grow you some mators or peppers, and when you get er done we all sing kum bi ya and revile in the light your designing for me...
Another words, calm down,
And welcome to the farm!
Help me design my 600 watt 4x4 cob array with vero..
Then if i buy this 600 watt cob cree light, i run them against each other.
Im trying to talk the dude down to 700
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That's uplifting to hear, for sure. I mean no, we're not at Harvard. Maybe somewhere in-between Weedology and Harvard, lOl. I get that for real I do. Y'all will probably see something from me end-October early-November. I am calm lol I'm a tame dude these days I don't think the rest of the town agrees but at-least I know! lol, and thanks! The post really has nothing to do with the farm. It was being called a parasite etc. for sharing my data on another forum with other members hopping on the bandwagon. I don't really got time for shit like that and I don't want to burn any bridges, so I'm just lookin' to not make waves. We good over there too but they just won't be getting any help designing their lights!! At their request, lOl.

I'd love to help you out. I'll look into it later tonight. Peace, thanks for the uplifting words.
 
h4ppyf4rmer

h4ppyf4rmer

863
143
cccmints said:
I'd convert it to a 12 COB fixture running just 75 watts over what you're doing right now and reap the benefits from a 16% efficiency increase with minimal increase in power draw.
Click to expand...

so here is another thing to consider, the fewer lights over the same given area means less uniformity of the light over the canopy. If I were to change my current configuration, I would add more lights and run them closer together versus less lights driven harder but spread more apart just to gain some COB power efficiency.

BTW, I like all the information you're putting out, but for my current state/situation, I can't see spending more up front money to gain some COB efficiency that I may not get a ROI for 10+ years...I could be dead by then };-)
 
EventHorizan

EventHorizan

15,707
438
h4ppyf4rmer said:
so here is another thing to consider, the fewer lights over the same given area means less uniformity of the light over the canopy. If I were to change my current configuration, I would add more lights and run them closer together versus less lights driven harder but spread more apart just to gain some COB power efficiency.

BTW, I like all the information you're putting out, but for my current state/situation, I can't see spending more up front money to gain some COB efficiency that I may not get a ROI for 10+ years...I could be dead by then };-)
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You guys are talking pros and cons..
Exactly what you are supposed to do!
As long as we keep the mentality that know ones wrong, we are discussing not just builds but the pros and cons of driving them harder or more cobs and less push..
All good things that provoke thought which provokes design..
Keep it up you guys are doing a good job.. I make sure we keep it civil to a point lol....
 
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PharmHand

846
143
cccmints said:
@PharmHand The figures I use for HPS bulb degradation are from a member of the farm actually measuring the light output over the course of 3 months and reporting the results. I'm not surprised the manufacturers of these bulbs advertise better than what their product produces, but when you record it in real life with the physical product as opposed to reading what they say it does, you get different numbers.
This could be really good for you. I don't see where I could have made a mistake (even though its possible of-course) and the efficiency seems to sky rocket at higher drive currents which is not strange to me with the specific COB you're using. The Vero 29 is known to perform best at higher currents. You could be pushing your fixture harder while significantly increasing your efficiency at the same time.
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Ok. My screen shots were of a promotional brochure for Philips LEDs, touting its benefits... It makes absolutely zero sense to exaggerate their HPS bulbs life expectancy in that situation...If they lied or even embellished their claims they would lose credibility and business and would not be the biggest lighting company in the world. Some guy on a grow site with a 200$ light meter claims his solistek de lost 28% in 3 months at 12/12 and you take that as fact? You don't think these guys would notice it in their bottom line if they're light depreciated by 10% a month?
IMG 1629
LEDs ARE efficient, and likely the way of the future until something better comes along. Your point would be better well served by stating facts, not perpetuating stoner hearsay
 
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cccmints

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PharmHand said:
Ok. My screen shots were of a promotional brochure for Philips LEDs, touting its benefits... It makes absolutely zero sense to exaggerate their HPS bulbs life expectancy in that situation...If they lied or even embellished their claims they would lose credibility and business and would not be the biggest lighting company in the world. Some guy on a grow site with a 200$ light meter claims his solistek de lost 28% in 3 months at 12/12 and you take that as fact? You don't think these guys would notice it in their bottom line if they're light depreciated by 10% a month?View attachment 745074 LEDs ARE efficient, and likely the way of the future until something better comes along. Your point would be better well served by stating facts, not perpetuating stoner hearsay
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Then neither one of our sources are credible enough. Its not a fact that the numbers for a product advertised by that product's manufacturer perfectly reflect measuring the physical product's performance yourself. They both have reasons for us to believe they are partially credible and reasons to believe otherwise. You need to bring the tone down on your posts a little bit. Which light meter did you use to measure the bulb? What data did you collect? I personally don't trust advertised numbers for this specific product. I'm going to do the tests regardless, but I have a strong feeling these bulbs degrade quicker than the claims. Maybe less than what I've been told, who knows.
 
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PharmHand

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I apologize if I came off harsh, not at all my intention. My point was Philips being the mega corporation that it is would lose more money by embellishing in terms of repeat business than they would gain by tricking people. Bulb degradation is pretty obvious even without a meter, your yield goes down. The testing equipment used is expensive, you will NOT get accurate/consistent results with a meter under 1000$. Again, they were pushing LEDs in that ad lol. I bet their LED life expectancy numbers were wrong too, right?
 
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cccmints

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PharmHand said:
I apologize if I came off harsh, not at all my intention. My point was Philips being the mega corporation that it is would lose more money by embellishing in terms of repeat business than they would gain by tricking people. Bulb degradation is pretty obvious even without a meter, your yield goes down. The testing equipment used is expensive, you will NOT get accurate/consistent results with a meter under 1000$. Again, they were pushing LEDs in that ad lol. I bet their LED life expectancy numbers were wrong too, right?
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All I'm really saying is we're speculating whether the numbers we see are true representations of the product. Until someone buys those expensive meters, and does these tests, we aren't going to really know the truth for sure. I'm working on getting into a position where I can do this.
 
EventHorizan

EventHorizan

15,707
438
h4ppyf4rmer said:
so here is another thing to consider, the fewer lights over the same given area means less uniformity of the light over the canopy. If I were to change my current configuration, I would add more lights and run them closer together versus less lights driven harder but spread more apart just to gain some COB power efficiency.

BTW, I like all the information you're putting out, but for my current state/situation, I can't see spending more up front money to gain some COB efficiency that I may not get a ROI for 10+ years...I could be dead by then };-)
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Link me again to your led thread so i can study your light some more now that im get my 12th grade learnin on....
 
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