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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Incandescent light bulb replacements
This has been my opinion for a very long time, that the waste products of
CFL and LED lighting will end up being serious problems to everyone eventually. Not only the problems associated with disposal of these lighting products, but also the pollution from the byproducts of manufacturing them. How much coal needs to be burned to manufacture an LED or CFL lamp, sort of assessment. Also, as wiseasses will say "don't eat the lamps" however most of the products made in China quickly end up in landfills around the world, although I suppose it's a delightful fantasy to believe that the liners used in those pits will never fail and release all those metals, toxins and plastic residues into water supplies. Wake the **** up. Not only are toxins inside LEDs and the glass tubes of CFLs, but also in the electrolytic capacitors and other components inside these lightling products. As China will very likely be manufacturing all this great new technology will be produced, by the lowest bidder, with the cheapest components available AND with lead-free solder and any other imaginable manufacturing shortcuts.. the reliability of these new lamps will probably be shorter than a decent incandescent lamp. While the sheep flock to buy the new LED products labeled with statements like "30 year life" or "50,000 hours average life" they won't even recall how those thermal windows were pitched as "they'll pay for themselves" when they made the payment of a couple or several thousand dollars for them. As those windows have all fallen apart by now, and been replaced with even more expensive products at higher installation costs, so it's all just water under the bridge. The environmental impact of common incandescent lamps will likely be very small to the problems associated with the newest greatest products. Glass is still being used for CFLs so the manufacturing energy costs can't be significantly less. I have yet to see a CFL lamp last longer than 2 years, and the majority of them that I've owned haven't come cloe to that (I mark the date on the bases when I put them into use). These are CFL lamps of various brands (not the cheapest I could find) that are packaged as 5 year or 7 year useful life lamps. I've found LEDs to be very practical for use in flashlights, but they don't light a room worth a damn. OTOH, I have a portable worklight with 180 LEDs, and it's hardly more useful than a common incandescent flashlight of 30 years ago. Flashlight batteries don't produce power spikes or surges the way AC power sources do, and without good suppression and/or regulation components driving up the manufacturing costs, the LED lamps will likely be too easily damaged to make them practical in many applications. The other advantage to battery power is it's already low voltage which is what LEDs operate on.. dropping spiking/surging 120VAC to a low DC voltage requires stable circuitry.. which is only reliable if better quality components are used, not bottom of the barrel, minimumally adequate components. -- WB .......... "azotic" wrote in message ... A study by UC Irvine's Department of Population Health & Disease Prevention has discovered that LED diodes contain unsafe levels of carcinogenic toxins. While LED's less energy friendly cousin's, CFLs, contain a measured amount of mercury, LEDs are laden with lead, arsenic and a handful of other chemicals that have been linked to different cancers, neurological damage, kidney disease, hypertension, skin rashes and other serious illnesses. Not only are these chemicals harmful to consumers if the bulbs are mishandled or broken, but extracting those toxins from the earth is a destructive process. Study Finds LED Light Bulbs Contain Unsafe Levels of Carcinogenic Toxins | Inhabitat - Green Design Will Save the World Best Regards Tom. -- http://fija.org/ |
#2
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Incandescent light bulb replacements
"Wild_Bill" wrote:
I have yet to see a CFL lamp last longer than 2 years, and the majority of them that I've owned haven't come cloe to that (I mark the date on the bases when I put them into use). I have some approaching the 3 & 4 year marks, but I largely agree. I recently had to replace the last incandescent in that same area. It started out 50/50. I too have started marking the date. These are CFL lamps of various brands (not the cheapest I could find) that are packaged as 5 year or 7 year useful life lamps. Flashlight batteries don't produce power spikes or surges the way AC power sources do, and without good suppression and/or regulation components driving up the manufacturing costs, the LED lamps will likely be too easily damaged to make them practical in many applications. I think that traffic lights are a good model for this. The are essentially screw in bulb replacements, operating off of 120V with no special filtering. They do seem to last, and the failure modes usually seem to be portions of led on the "bulb" rather than total failures. [ But those partial failures seem to be a lot more frequent than they were supposed to be.] The other advantage to battery power is it's already low voltage which is what LEDs operate on.. dropping spiking/surging 120VAC to a low DC voltage requires stable circuitry.. which is only reliable if better quality components are used, not bottom of the barrel, minimumally adequate components. jk |
#3
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Incandescent light bulb replacements
Nearly anything can be manufactured to last, but not at Wham-mart
prices/profit margins. There will be LED products for aircraft or medical equipment which don't die in short periods of time, but for the most part, the crap sold in retail stores is throw-away junk. The responsibility for energy conservation is shoved onto the consumers. The consumers generally only have crap products to choose from, which ends up being expensive for the consumers.. but also increases the number/volume of toxic materials to be disposed of (more expense having it hauled away). Many consumers are too stupid to realize that buying $5 or 50 dollar lightbulbs over n'over again because the cheap crap doesn't last.. isn't saving them money or saving the planet, but only making a few insatiably greedy ****s more wealthy. If anyone was serious about energy conservation, banning holiday lighting would be a good start.. any holiday. Cheaply made CFL and LED lighting products are just another way to stick it to the consumer.. BOHICA. It seems that very few people ever learn anything.. still falling for the "this product will pay for itself" crock a'****. -- WB .......... "jk" wrote in message news "Wild_Bill" wrote: I have yet to see a CFL lamp last longer than 2 years, and the majority of them that I've owned haven't come cloe to that (I mark the date on the bases when I put them into use). I have some approaching the 3 & 4 year marks, but I largely agree. I recently had to replace the last incandescent in that same area. It started out 50/50. I too have started marking the date. These are CFL lamps of various brands (not the cheapest I could find) that are packaged as 5 year or 7 year useful life lamps. Flashlight batteries don't produce power spikes or surges the way AC power sources do, and without good suppression and/or regulation components driving up the manufacturing costs, the LED lamps will likely be too easily damaged to make them practical in many applications. I think that traffic lights are a good model for this. The are essentially screw in bulb replacements, operating off of 120V with no special filtering. They do seem to last, and the failure modes usually seem to be portions of led on the "bulb" rather than total failures. [ But those partial failures seem to be a lot more frequent than they were supposed to be.] The other advantage to battery power is it's already low voltage which is what LEDs operate on.. dropping spiking/surging 120VAC to a low DC voltage requires stable circuitry.. which is only reliable if better quality components are used, not bottom of the barrel, minimumally adequate components. jk |
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