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| PlainName:
--- Quote ---Burning coal to power an incandescent lamp releases more mercury into the environment than throwing away a CFL. --- End quote --- Are CFLs powered by some magic non-coal derived source, then? To put it another way, burning coal to power a CFL surely releases slightly less mercury from the power but an additional dump from the CFL at EOL (which, typically, would be sooner than the incandescent lamp). |
| coppice:
--- Quote from: PlainName on November 04, 2022, 09:46:35 pm --- --- Quote ---Burning coal to power an incandescent lamp releases more mercury into the environment than throwing away a CFL. --- End quote --- Are CFLs powered by some magic non-coal derived source, then? To put it another way, burning coal to power a CFL surely releases slightly less mercury from the power but an additional dump from the CFL at EOL (which, typically, would be sooner than the incandescent lamp). --- End quote --- It takes far less coal to power a CFL, so its still a lower polluter. |
| Bud:
--- Quote from: coppice on November 04, 2022, 08:29:21 pm --- --- Quote from: james_s on November 04, 2022, 08:18:33 pm ---I never saw one[CFL] that was claimed to last 100,000 hours. The best ones were typically rated for 8,000, cheaper ones 6,000. I had some early failures but I also had many that lasted longer than the rated life, largely that came down to how rarely they were started. Lights that came on once in the evening and shut off later lasted much longer than those that were switched off and on often. --- End quote --- I've seen National CFLs run for 10 years in stair wells, where they were never turned off. I think they were only rated for 8000 to 10000 hours, but could massively exceed that. Most of the complaints about the short life of CFLs are due to many warm up cycles (e.g. bathroom use) or use in an enclosed luminaire. Most CFLs are marked as unsuitable for use in enclosed fittings, but people ignore that. They blacken even faster when they can't dissipate their heat well, than when they are turned on and off a lot. --- End quote --- Funny enough, I used a few spare CFLs in my fridge. They only lasted 2 weeks each. Surely there is plenty of cold air in the fridge, so they did not die because of overheating. I still do not know why they died that fast. |
| Ranayna:
I would guess dampness or maybe cracking due to temperature difference? |
| tom66:
--- Quote from: james_s on November 04, 2022, 08:14:10 pm ---That's something I've thought about for a while. Even the most optimistic moon shot climate action proposed predicts results that are still pretty dire as I recall. If we were going to prevent human caused climate change, the window of opportunity for that was decades if not a century ago. As of now we have already passed the point of no return so we may be better off finding ways to mitigate the effects rather than trying to prevent it. --- End quote --- Unfortunately, a bit of both. We need to drastically cut CO2 emissions, but also work to mitigate the worst effects. That means building flood defences, security for energy grids against extreme temperatures (no Texas again, please), insulating existing homes, building *new* homes to be zero carbon, look at genome engineering or at least crop selection to be more rugged to extreme heat/longer droughts -- all of that stuff. There's no scenario in which we don't reduce emissions and only mitigate the badness and survive the long term in any reasonable manner. It'd be a bit like the lung cancer patient smoking 40-a-day after their tumour was excised. |
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