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| Explain to me the (de?)-evolution of LED lightbulb technology |
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| MK14:
--- Quote from: TimNJ on March 25, 2021, 09:02:20 pm ---Is the fact that you can get an LED lightbulb for $5USD a reflection of the amount of energy it takes to make it? At that price, is it reasonable to think that it really doesn't take that much energy to make one? --- End quote --- That doesn't include the real world/life cost to the planet, on getting rid of the waste LED bulbs that build up over time. |
| TimNJ:
--- Quote from: MK14 on March 25, 2021, 09:09:27 pm --- --- Quote from: TimNJ on March 25, 2021, 09:02:20 pm ---Is the fact that you can get an LED lightbulb for $5USD a reflection of the amount of energy it takes to make it? At that price, is it reasonable to think that it really doesn't take that much energy to make one? --- End quote --- That doesn't include the real world/life cost to the planet, on getting rid of the waste LED bulbs that build up over time. --- End quote --- --- Quote from: TimNJ on March 25, 2021, 08:55:49 pm --- .... The missing pieces are: The energy input required to make each type of bulb and the environmental impact of each bulb when it's chucked in a landfill. I don't think you can put the latter in terms of energy...although maybe you can think of it as the energy required by some poor future human society to un-****-up the world the previous generations left them. .... --- End quote --- I know this. I am talking about how much energy is required to make it. I'm saying that something that is sold for $5 probably can't have a ginormous energy input or else it would be reflected in the price, unless that price is subsidized in some way. Disposal and environmental impact is probably not easily quantifiable. |
| Red Squirrel:
LED bulbs SHOULD be simple and inexpensive and practically last forever, yet they are more expensive and seem to be bad for failing early. Even CFLs were better for life time. The failure mode I seem to often get is lights that just turn on and off. Like a cold solder joint somewhere. I heard that some may do it based on temperature if they overheat, but considering I rarely have my house hotter than 20C I doubt this is what I am seeing. |
| james_s:
--- Quote from: madires on March 25, 2021, 08:24:08 pm ---Then we have to accept that we'll create more e-junk by using LED bulbs which fail early. Is this better or worse than using incandescent bulbs with a higher power consumption in old lamps? --- End quote --- Well like I said, I have not been experiencing this high failure rate. I started buying LED bulbs in 2010 and had fully replaced all the CFL bulbs in my house by 2012. I still have a handful of the original Philips, Cree and Ecosmart bulbs I bought way back then, even several that are in dusk till dawn service in outdoor fixtures. Since 2010 I've had maybe 5 or 6 LED bulbs fail and about that many more that I replaced due to the availability of newer bulbs offering higher efficiency, better light quality or other features like the Hue bulbs that can be set to a whole range of colors. Maybe I'm just incredibly lucky, I don't know, but I had a lot of early CFL failures while LED has been much more reliable. My mother has had a similar experience, in 2011 I put a 600 lumen Cree bulb in the landscape light by her front walkway, it's on a photocell and runs dusk till dawn every night, that same bulb is still working. |
| TimNJ:
--- Quote from: james_s on March 25, 2021, 11:22:51 pm --- --- Quote from: madires on March 25, 2021, 08:24:08 pm ---Then we have to accept that we'll create more e-junk by using LED bulbs which fail early. Is this better or worse than using incandescent bulbs with a higher power consumption in old lamps? --- End quote --- Well like I said, I have not been experiencing this high failure rate. I started buying LED bulbs in 2010 and had fully replaced all the CFL bulbs in my house by 2012. I still have a handful of the original Philips, Cree and Ecosmart bulbs I bought way back then, even several that are in dusk till dawn service in outdoor fixtures. Since 2010 I've had maybe 5 or 6 LED bulbs fail and about that many more that I replaced due to the availability of newer bulbs offering higher efficiency, better light quality or other features like the Hue bulbs that can be set to a whole range of colors. Maybe I'm just incredibly lucky, I don't know, but I had a lot of early CFL failures while LED has been much more reliable. My mother has had a similar experience, in 2011 I put a 600 lumen Cree bulb in the landscape light by her front walkway, it's on a photocell and runs dusk till dawn every night, that same bulb is still working. --- End quote --- Maybe the rest of us are just buying crap. :-DD |
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