GrumpyToker
Well-Known Member
Man it's been while. I'll have to see if I can find that one on KODI
LEC - Light-Emitting Ceramic
- Thread starter potroastV2
- Start date
Sire Killem All
Well-Known Member
think it was Nicole Kidmans first movie.. she was so young.
BOBBY_G
Well-Known Member
at some point in the not too distant future cobs will be cheaper than the bulbs you are repalcing
also replacing cobs within a few years would only be done to get a serious performance boost
replacing your bulb after 2 years just restores your diminished light back to level it was 2/4/6 years ago. without doing the math ill bet that if instead of replacing your bulb every two years you burned it for 10 years and bought $100 worth of cobs every 2 years that it would be a wash down the road
ttystikk
Well-Known Member
No it wouldn't. You'd be growing more with the COB LED.
potroastV2
Well-Known Member
That's all well and good, now can we please talk about LEC?
Thanks, the OP.
Thanks, the OP.
BOBBY_G
Well-Known Member
ok now you make me wanna think about it.
lets say it drops 5% a year
year 0 33000 lumens
year 1 31350
year 2 29800
year 3 28300
year 4 26900
year 5 25500
year 6 24300
year 7 23000
year 8 21900
if youre replacing them once every two years you spend $90 average every 2 years and average 31350 lumens (actually prob just under 31000 as these bulbs drop to like 96% luminosity the first week)
diy cobs are approaching the $2/watt mark with drivers and sinks
so youd be buying 45W worth of cobs every two years = 8355 lumens youd be tacking on
so yeah looks like cob is a better investment than even the LEC bulbs alone. youd have to do a little better analysis of lumens/watt since you'd be running the already relatively inefficient LECs at an even lower efficiency at first (and pulling more power with LECs+COBs). so your lumens/watt might dip overall, but as far as lumens/dollar there is no reason to ever buy new LEC bulbs just supplement with cobs instead for the same money and you'll be way way ahead in overall lumens/dollar.
and yes i realize the above numbers are exaggerated because of the 2 factors i mentioned
(running an old inefficient lec bulb into the ground and also adding cob wattage to make more total wattage)
but it also doesn't consider that LEC bulbs are prob close to their price floor, where semiconductor tech should continue to drop 10% in price and gain 10% in efficiency on a 12-18 mo cycle.
maybe ill crunch the numbers later when i have more time i have a feeling that supplementing with cobs will still be way way more economical than spending money on bulbs with such a short relative life
lets say it drops 5% a year
year 0 33000 lumens
year 1 31350
year 2 29800
year 3 28300
year 4 26900
year 5 25500
year 6 24300
year 7 23000
year 8 21900
if youre replacing them once every two years you spend $90 average every 2 years and average 31350 lumens (actually prob just under 31000 as these bulbs drop to like 96% luminosity the first week)
diy cobs are approaching the $2/watt mark with drivers and sinks
so youd be buying 45W worth of cobs every two years = 8355 lumens youd be tacking on
so yeah looks like cob is a better investment than even the LEC bulbs alone. youd have to do a little better analysis of lumens/watt since you'd be running the already relatively inefficient LECs at an even lower efficiency at first (and pulling more power with LECs+COBs). so your lumens/watt might dip overall, but as far as lumens/dollar there is no reason to ever buy new LEC bulbs just supplement with cobs instead for the same money and you'll be way way ahead in overall lumens/dollar.
and yes i realize the above numbers are exaggerated because of the 2 factors i mentioned
(running an old inefficient lec bulb into the ground and also adding cob wattage to make more total wattage)
but it also doesn't consider that LEC bulbs are prob close to their price floor, where semiconductor tech should continue to drop 10% in price and gain 10% in efficiency on a 12-18 mo cycle.
maybe ill crunch the numbers later when i have more time i have a feeling that supplementing with cobs will still be way way more economical than spending money on bulbs with such a short relative life
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BOBBY_G
Well-Known Member
well that didnt take long haha
i used 340W for an at-the-wall draw on the LECs, where with an average 31350 lumens youd be 92.2 lumens/watt
i used 50W for the cob load (efficiency)
i did not factor in price drop and efficiency bump of future cobs
as you can see the first 45W cob upgrade takes you above the (fleeting) lumens/watt of a "perfect" brand new lec bulb and is about 5% more efficient than the average LEC lumens on a 2-year bulb interval.
more importantly, for the exact same dollar investment you are ADDING capacity every 2 years instead of MAINTAINING capacity. even if you were electrical-use sensitive you could run less lights to stay at your original 31000 lumen target (and your lumens/watt would SKYROCKET if you pulled out the old LECs in this case)
moral of the story: those with HIDs need to work with the tech they have but are literally throwing money in the trash
(on even a very short-term economic analysis) every time they reup their commitment with new bulbs....upgrading say 10% of your wattage every two years with cobs is a much better investment
i used 340W for an at-the-wall draw on the LECs, where with an average 31350 lumens youd be 92.2 lumens/watt
i used 50W for the cob load (efficiency)
i did not factor in price drop and efficiency bump of future cobs
as you can see the first 45W cob upgrade takes you above the (fleeting) lumens/watt of a "perfect" brand new lec bulb and is about 5% more efficient than the average LEC lumens on a 2-year bulb interval.
more importantly, for the exact same dollar investment you are ADDING capacity every 2 years instead of MAINTAINING capacity. even if you were electrical-use sensitive you could run less lights to stay at your original 31000 lumen target (and your lumens/watt would SKYROCKET if you pulled out the old LECs in this case)
moral of the story: those with HIDs need to work with the tech they have but are literally throwing money in the trash
(on even a very short-term economic analysis) every time they reup their commitment with new bulbs....upgrading say 10% of your wattage every two years with cobs is a much better investment
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GrumpyToker
Well-Known Member
The LEC puts off such beautiful light! You have to see it in person to appreciate it.
genuity
Well-Known Member
Fortune teller
And I know,just by watching this section, that the plc 300 (I think that's the one) will do the same.
And with the sale,hope it last a Lil longer..I'm grabbing 2 of them,over what I was going to get (that grow beast)for 1200+.
genuity
Well-Known Member
I tried my best,to make it,make sense to me...I don't know what they was thinking.
a mongo frog
Well-Known Member
What kind of veg time are you giving the 2 in the lower part of the picture? Thats super nice!