REALSTYLES 6th DIY CXA 3590 5000k DB bin

REALSTYLES

REALSTYLES

Well-Known Member
PurpleBuz said:
while that statement is true ...

your both full of shit, cause the more usable light produced by a lamp less energy is released as heat into the grow space. which was the whole point of my statement.

the heat of an object is the total energy of all the molecular motion inside that object. Temperature, on the other hand, is a measure of the average heat or thermal energy of the molecules in a substance.
seems guod got it ass backwards.
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Well I can say I'm running 1302 watts in my room and it's cooler than me running 1k HID and I use no AC summer sucks for me but winter I'll turn my lights up full blast and we'll see. tired of just the math behind it and not actually testing to really find out. I have to say is I'm running CXB3590 72v cb and cd bins @ 350ma. Where I live it gets very fucking hot and winter is my best friend lol

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They went through 95-100F temps because it was 95-100F outside what ever the temp is outside it's in my room so 1302 watts of LES= 56 cobs @ 23 watts heat sink temps 86F does run cool
 
bicit

bicit

Well-Known Member
PurpleBuz said:
while that statement is true ...

your both full of shit, cause the more usable light produced by a lamp less energy is released as heat into the grow space. which was the whole point of my statement.

the heat of an object is the total energy of all the molecular motion inside that object. Temperature, on the other hand, is a measure of the average heat or thermal energy of the molecules in a substance.
seems guod got it ass backwards.
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Most of the energy released as light ends up as heat eventually due to scattering(photons transfer energy every time they bounce) and inefficiencies in metabolic processes.

A 1kw power source is going to produce the same temperature in a sealed room regardless of if it's HID, LED, incandescent, or a toaster oven....Light energy is still energy.... Displacing energy in a system(grow room) will increase it's temperature proportional to the amount of energy being displaced.

LED's are not a magic bullet for temperature solutions. As I quickly learned.
 
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PurpleBuz

Well-Known Member
bicit said:
Most of the energy released as light ends up as heat eventually due to scattering(photons transfer energy every time they bounce) and inefficiencies in metabolic processes.

A 1kw power source is going to produce the same temperature in a sealed room regardless of if it's HID, LED, incandescent, or a toaster oven....Light energy is still energy.... Displacing energy in a system(grow room) will increase it's temperature proportional to the amount of energy being displaced.

LED's are not a magic bullet for temperature solutions. As I quickly learned.
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I already posted on this many times, and so have others. while your general principle is correct (energy as electrical watts is all eventually dissipated as heat)

The energy is not all dissipated into heat right away.
About 1-10% of light is fixed and trapped in carbon. Duhhhh Photosynthesis the whole point of the light.
More efficient lights produce more light versus direct immediate heat. the more light the less that is immediately dissipated as heat.
Lights with a better plant usable spectrum will fix more carbon.

so stop the silliness with pure theories of entropies WITHOUT considering the whole picture.
 
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churchhaze

Well-Known Member
PurpleBuz said:
I already posted on this many times, and so have others. while your general principle is correct (energy as electrical watts is all eventually dissipated as heat)

About 1-10% of light is fixed and trapped in carbon. Duhhhh Photosynthesis the whole point of the light.
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So what you're basically saying is that 90-99% of light that hits your plants only serves to heat up the plant tissue.
 
bicit

bicit

Well-Known Member
PurpleBuz said:
I already posted on this many times, and so have others. while your general principle is correct (energy as electrical watts is all eventually dissipated as heat)

The energy is not all dissipated into heat right away.
About 1-10% of light is fixed and trapped in carbon. Duhhhh Photosynthesis the whole point of the light.
More efficient lights produce more light versus direct immediate heat. the more light the less that is immediately dissipated as heat.
Lights with a better plant usable spectrum will fix more carbon.

so stop the silliness with pure theories of entropies WITHOUT considering the whole picture.
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Have you looked at the speed of light lately? For our purposes with the distances light has to travel in the grow room, this is practically instantaneous. Energy doesn't lazily drift from state to state.....

OK so that last part isn't quite true in all situations.... but for this example it is.

Now this is assuming a sealed room. Air extraction changes things considerably.

I tried replacing a 125w self ballasted CFL in a tiny closet with 126 watts of vero 18's with the drivers located outside the room. Same temperature problems despite being over twice as efficient... Had to pull out one of the lights to get the temps where I liked them, even then I still had to leave the door propped open.
 
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benbud89

Well-Known Member
bizfactory said:
I just started flowering on my 200w CXB3070s and have it over 2 plants. I have two plants in the same tent under a chinese panel (Platinum P300). I stopped rotating them after veg. Now the 2 under the CXBs are HUGE compared to the P300. Look a bit healthier too. Makes all the work we put into our lights just that much sweeter to see the performance difference right in front of your face. Haters gonna hate!

P300 in the back obviously, not a good shot to show off the size difference but still cool!
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Hey man! Im planning to make a pretty similar light, if not the same. At least COB- and driverwise. Can you post me some bud shots of what they end up looking like? Nice light ! :)
 
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benbud89

Well-Known Member
REALSTYLES said:
Just 90 at night lol. I live in the San Fernando Valley. It use to be a desert but they put grass and trees and developed the area. I'm in California where it gets hot and one year it was 110F and 95 at night and 95 at 9am
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at least you dont have to deal with humidity, which is a bitch. So I think youre just fine!
 
silvrsurfer77

silvrsurfer77

Well-Known Member
REALSTYLES said:
Why there is no need for me to use 36v 72v gets me 50watt per cob at 700ma instead of 1400ma for the 36v. Just my preference.
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Gotcha, I was just trying to think of making it a little less expensive, but I was pretty baked and wasnt thinking about the power difference lol.

For my 4x4 space Im gonna use 12 cxb3590 36v on 3- hlg- 185h -c1400b on 3- 5.8x36" heatsinks...almost done building them, just gotta do covers and some dimmers. I think your using 200w or so more but your getting more efficiency and light I'm pretty sure. Im guessing you use 2 of your lights for a 4x4 (from your videos) which would be aprox $1250 in materials and mine is about $1000 in materials for the same space.....trying to figure out which is the best bang for the buck, if its worth the extra money doing 16 chips with your layout vs my 12 layout. Im gonna be building for another 4x4 space in the next so Im debating.
 
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PurpleBuz

Well-Known Member
churchhaze said:
So what you're basically saying is that 90-99% of light that hits your plants only serves to heat up the plant tissue.
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I didn't say that, plants have other pigments besides chlorophyll and its pretty clear that in addition to some morphogenic effects its not really known what happens to that energy.

although in a broader sense your right, a great deal of the energy is lost as heat as the photon is absorbed, and the energy is used to fix carbon. more is lost as the plant metabolizes the energy but that doesn't happen right away.

so if we assume worst case (99%) , and assume its a waste of energy, and the heat is unwanted should we turn the light off ? LOL sorry sometimes people get silly when looking at numbers.
 
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PurpleBuz

Well-Known Member
bicit said:
Have you looked at the speed of light lately? For our purposes with the distances light has to travel in the grow room, this is practically instantaneous. Energy doesn't lazily drift from state to state.....

OK so that last part isn't quite true in all situations.... but for this example it is.

Now this is assuming a sealed room. Air extraction changes things considerably.

I tried replacing a 125w self ballasted CFL in a tiny closet with 126 watts of vero 18's with the drivers located outside the room. Same temperature problems despite being over twice as efficient... Had to pull out one of the lights to get the temps where I liked them, even then I still had to leave the door propped open.
Click to expand...
speed of light is irrelevant. light is absorbed by cholorophyll and some of the energy is directly used to fix carbon, except for what energy is lost due to inefficiency the energy is not converted to heat before carbon is fixed.
 
bicit

bicit

Well-Known Member
PurpleBuz said:
I didn't say that, plants have other pigments besides chlorophyll and its pretty clear that in addition to some morphogenic effects its not really known what happens to that energy.

although in a broader sense your right, a great deal of the energy is lost as heat as the photon is absorbed, and the energy is used to fix carbon. more is lost as the plant metabolizes the energy but that doesn't happen right away.

so if we assume worst case (99%) , and assume its a waste of energy, and the heat is unwanted should we turn the light off ? LOL sorry sometimes people get silly when looking at numbers.
Click to expand...
That's not what we're saying at all. Sorry but that's just stupid. The point we're( or at least I, not to put words into churches fingers) trying to make is that a more efficient light source lets you use less overall power displacement in order to achieve the same photon density. Thus reducing the overall amount of load on the HVAC system by reducing the overall power displacement within the room.

You won't reduce the temps of your room by replacing an HID with LED's of the same power displacement. It doesn't matter how much more efficient it is. The amount temperature of the room is DIRECTLY proportional to the AMOUNT of power being displaced within the room. NOT the efficiency of the devices using said power.

Answer me this question. Why does a 400w HID lamp warm up a room less than a 1000w HID lamp? Despite the efficiency of the 1000w lamp being much higher and producing more overall light.

Just because a lamp is producing MORE energy in the form of light does not mean it's adding less overall energy to the system. Just because there is more light does not mean more gets absorbed.

http://www.physicsclassroom.com/class/thermalP/Lesson-1/What-is-Heat
 
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