Will LED lights ever....

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PurpleBuz

Well-Known Member
Yodaweed said:
We have some of the lowest electrical prices in the nation here in Colorado, a couple hundred more watts for a biggest harvest is worth it 100%.
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that's the only thing you said that makes any sense ....

ie electric rates are low in Colorado, so the ultra efficiency for COBS over HID is not as big a priority for growing in Colorado, as long as a good COB light is significantly more expensive than a top end HID.

Only problem is , the price diff is shrinking for a top end HID
 
chuck estevez

chuck estevez

Well-Known Member
Greengenes707 said:
@chuck estevez A watt is a watt and they all have the same btu output...3.412BTU's per hour no matter what the efficiency of the source is. It the ability to use lower wattage to create the same amount of light that is "creating" less heat. Still needs to be dealt with. But with the ability to produce such high amounts of light per watt will let you drop 35%-40% in heat loads via wattage drop.
For that cx300 at 330w from the wall...x3.412= 1126 BTU/hr including fans, drivers, everything.

Chuck, I know that you do have a real interest...whether you use or plan to use or not...you do want to see the real info and results...I know/feel that of you. I will/do/have treated you as a curious mind open to the info and am not trying to pull anything over on you or anyone, or even forcing the use of them down anyone's throats. Just putting out the info to their successful use for anyone to make their own decision.
I don't mean to come off to you like I do purposefully to the trolls if I have.
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you have been very helpful and have answered all my questions like a real gentleman.
 
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grouch

Well-Known Member
frica said:
Photosynthesis is an endothermic process isn't it?
Light(energy) that's being used for photosynthesis is stored in the biomass and won't become heat energy unless you start burning it.
Not all light output is used for photosynthesis though so a portion of it will become heat energy directly.

In a closed box with no plants, there would be no difference between a 100W light and a 100W heater.
But in a growbox a portion of the energy put out by the light gets stored inside the biomass and won't become heat
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I think this is what we all need to redirect our focus on lol
 
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grouch

Well-Known Member
Something else that hasn't been mentioned much is the ability to remove the heat from an area without reducing light. Typically when you run an air cooled hood with hid lights you lose light output from the glass you must pass through before reaching the plants. Leds ability to use heatsinks can allow this heat to be removed through ventilation without covering the bulb.
 
luv2grow

luv2grow

Well-Known Member
Yodaweed said:
That doesn't change the fact a 1000 watt hps covers a 5x5 and a duel ended gavita covers a 6x4...what are you saying...my 600w hps covers a 4x4...
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I'm surprised no one caught this little info."last sentence"
This is a person talking about grow "ops" and how leds are awful for production.
Hasn't posted a single pic to back himself up. Seen a few from other ppl post production pics using hps and leds and they didn't troll this thread. Just stated the facts.

just saying a troll is a troll. A dense troll is a wall. Who wants to talk to a wall.....
 
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PurpleBuz

Well-Known Member
luv2grow said:
I'm surprised no one caught this little info."last sentence"
This is a person talking about grow "ops" and how leds are awful for production.
Hasn't posted a single pic to back himself up. Seen a few from other ppl post production pics using hps and leds and they didn't troll this thread. Just stated the facts.

just saying a troll is a troll. A dense troll is a wall. Who wants to talk to a wall.....
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:wall::wall::wall:

wow his head must hurt!
 
a mongo frog

a mongo frog

Well-Known Member
luv2grow said:
I'm surprised no one caught this little info."last sentence"
This is a person talking about grow "ops" and how leds are awful for production.
Hasn't posted a single pic to back himself up. Seen a few from other ppl post production pics using hps and leds and they didn't troll this thread. Just stated the facts.

just saying a troll is a troll. A dense troll is a wall. Who wants to talk to a wall.....
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Pretty sure no one caught because its easier not to respond to that dude/girl any more. Every room that was posted he put down. I didn't even know she had a thread. Can you link that up please.
 
Stephenj37826

Stephenj37826

Well-Known Member
grouch said:
Something else that hasn't been mentioned much is the ability to remove the heat from an area without reducing light. Typically when you run an air cooled hood with hid lights you lose light output from the glass you must pass through before reaching the plants. Leds ability to use heatsinks can allow this heat to be removed through ventilation without covering the bulb.
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Like my flagship Lights? Lol
 
cdgmoney250

cdgmoney250

Well-Known Member
Yodaweed said:
We have some of the lowest electrical prices in the nation here in Colorado, a couple hundred more watts for a biggest harvest is worth it 100%.
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The same could be said about the start-up cost of a top of the line DIY COB LED fixture. The light will pay for itself within a harvest if designed properly (keeping in mind we are growing a cash crop).

These COB fixtures are typically under-driven and should easily last between 5-10 years of use without ever replacing a bulb or reflector, while maintaining most of their output.
 
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churchhaze

Well-Known Member
Yodaweed said:
The entropy of a closed system is directly proportional to the work in the system. You are correct watts = heat but not all watts produce the same amount hence a 100watt heater makes more heat than a 100watt light.
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This is wrong. A 100W heater makes the same amount of heat as a 100W light. They both create 100W of heat regardless of the efficiency of the light.
 
GreenSanta

GreenSanta

Well-Known Member
cdgmoney250 said:
The same could be said about the start-up cost of a top of the line DIY COB LED fixture. The light will pay for itself within a harvest if designed properly (keeping in mind we are growing a cash crop).

These COB fixtures are typically under-driven and should easily last between 5-10 years of use without ever replacing a bulb or reflector, while maintaining most of their output.
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50000 hours should be 12 years of 12/12, I'm hoping for 15. If my lights last less than 7 years I will be super disappointed considering how much they cost...
 
cdgmoney250

cdgmoney250

Well-Known Member
That's why I said "while maintaining most of their output" i.e. > 90% or better.
I would suspect closer to 100,000 hours of actual operation under typical grow room conditions, with the COB's being under driven and actively cooled.
 
sureshot138

sureshot138

Well-Known Member
If you "do the math" the sun could be 93,000,000 miles away or 3000 depending on its size. The amazing thing is it would all work the same either way. You would never know unless somebody told you because all our senses lead us to the ladder.
 
ttystikk

ttystikk

Well-Known Member
a mongo frog said:
So it is true 800 watts of cob can do the same/greater than a 1000 watter? And your getting a 5x5 foot print right?
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I'll be putting this to the test starting next week. I replaced 860W CDM lamps with CXB3590 chips, intentionally kept wattage drawn constant both in total and in terms of watts per square foot. Not only will I be lighting the same area, I'll be using the same trellis, RDWC equipment and strains.

At the Kill-a-watt, each pulls 5400W over 72 sq ft = 37.5W/sq ft.

We shall see what they do!
 
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