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Re:Return of incandescent light bulbs as MIT makes them more... by jandrese on Wednesday May 25, 2016 @01:35PM (#11771555)
This article read an awful lot like a marketing puff piece and failed to answer some obvious questions. There is way too much "those evil fluorescent bulbs are making your life miserable" in the article.

1. How long are the bulbs going to last? 2. How expensive would they be to manufacture? 3. When could we see these in stores?

Often times there is a long road from laboratory prototype to production, and the supposed cost savings in electricity won't matter if they only last 1,000 hours and cost $100/bulb.

Re:Return of incandescent light bulbs as MIT makes them more... by ams6110 on Wednesday May 25, 2016 @01:52PM (#11771690)
Anecdote time. Those evil flourescent bulbs have made my life miserable.

They don't last substantially longer in the real world. I am routinely replacing them within 12 months.

They cost an order of magnitude more.

They are considered toxic waste with special clean-up and disposal considerations.

The amount of energy they save as a fraction of my total electric bill is inconsequential.

Re:Return of incandescent light bulbs as MIT makes them more... by jandrese on Wednesday May 25, 2016 @04:53PM (#11772984)
Stop buying such shitty bulbs. I moved into my house 8 years ago and replaced the incandescent as they burned out. Most within the first year. Of all of the bulbs I have replaced, not a single one has failed. The only ones that have failed me are some that came packaged in with a new light fixture. Those were the pits.

Worse, the bulbs in the lamps came from my previous home, and have been going strong for a decade now. I've been wanting to upgrade to LED bulbs when they finally burn out, but they've been too damn reliable.

There is a light at the end of the tunnel (hah) with a couple of bulbs that now won't turn on unless you tap them a bit. They're roughly a decade old and have been used for many hours, so I guess it's finally time.

Re:Return of incandescent light bulbs as MIT makes them more... by devbent on Wednesday May 25, 2016 @09:58PM (#11774689)
It also depends on the quality of electricity in one's house. I've lived in places that chewed through CFLs at a rapid pace, and yet the same sourced bulbs would last for years in a different house.
Re:Return of incandescent light bulbs as MIT makes them more... by cmurf on Wednesday May 25, 2016 @02:14PM (#11771850)
Their aging properties are different than incandescent. Incandescent tends to just fail when the filament breaks. There isn't much change in the spectral power distribution, and hence the overall stability of the light source is quite good. Whereas with fluorescent and even LED, there's a decaying of the phosphors, so while it'll produce light for a longer time (probably) the quality of the light will suffer immensely to the point that I think the longevity claims are approximately useless crap unless of course you don't care at all about the quality of light.
Re:Return of incandescent light bulbs as MIT makes them more... by ZenoArrow on Wednesday May 25, 2016 @07:37PM (#11774041)
Fluorescent bulbs have been superceded, LED bulbs are the best ones to get at the moment. There's very little reason to buy fluorescent bulbs anymore, LED bulbs last longer, are more efficient, and are easily affordable.
Re:Return of incandescent light bulbs as MIT makes them more... by overcast on Wednesday May 25, 2016 @03:00PM (#11772219)
I don't know, this may be anecdotal, much like your experience. But I have three fluorescent bulbs that have been running for at least the past five years. One of them runs all night from dusk till dawn, even through New York winters. The other is in the garage, and the other is above a stove, that runs all night as well.
Re:Return of incandescent light bulbs as MIT makes them more... by throwaway84284 on Wednesday May 25, 2016 @04:14PM (#11772715)
There you go, the reason yours last is because you're not switching them on and off 10 times a day everyday, like one would their bedroom light.
Re:Return of incandescent light bulbs as MIT makes them more... by Grishnakh on Wednesday May 25, 2016 @04:48PM (#11772952)
I wonder how much is also because they might be comparing apples to oranges: the guy with long-lived fluorescents sounds like he's using the traditional long tube kind, which are indeed known for very long lifespans, which is why they've been used in offices for many decades. The other guy complaining probably used CFLs, which are notorious for the cheap ones having very short lifespans, not because of the fluorescent bulb itself, but because of the cheap, crappy electronic ballast packaged inside. These bulbs almost always fail because of the electronics. On a traditional fluorescent system, the bulbs are just bulbs, with no electronics at all, and the ballast is a separate part that's built to last decades (the life of the fixture). Only the bulb is routinely replaced. When they went to CFLs, this changed, since they were trying to retrofit CFLs into sockets meant for incandescent bulbs, so they packaged a small electronic ballast into the base of the bulb assembly. And of course, to keep costs down, they massively cheaped out on the ballast electronics. With high voltages (needed to ionize the gas), it's easy for marginal components to fail early.
Re:Return of incandescent light bulbs as MIT makes them more... by ars on Wednesday May 25, 2016 @02:22PM (#11771919)
> They don't last substantially longer in the real world.

Yes they do, I have a lot of them and I write the installation date on the bulb - they have failed more or less inline with what the package said.

> They cost an order of magnitude more.

They cost $1. There is no reason they need to cost more than that.

> They are considered toxic waste with special clean-up and disposal considerations.

That isn't true, it's one of those urban myths that spread by email.

> The amount of energy they save as a fraction of my total electric bill is inconsequential.

What are you spending so much on electricity on?

Re:Return of incandescent light bulbs as MIT makes them more... by MOARDONGZPLZ on Wednesday May 25, 2016 @03:49PM (#11772544)
>> They are considered toxic waste with special clean-up and disposal considerations.

>That isn't true, it's one of those urban myths that spread by email.

It can be hazardous waste, you can't categorically say that it isn't true. Both of you are technically wrong. While it's correct that low mercury bulbs can be disposed of in dumpsters according to EPA, some states have stricter rules with respect to even low mercury bulbs. I believe CA, WA, and VT all require specific recycling of low mercury bulbs, for example.

Beyond that, looking at bulbs that are NOT low mercury, those DO become regulated hazardous waste after they burn out according to federal laws. So those MUST be recycled properly to comply with federal and state laws.

In any case, 100% of fluorescent bulbs contain mercury, which is really bad for the environment. So even if you're legally allowed to throw them in dumpsters, it's really not something you should be doing if you care about the environment or the people in it.

Bottom line: Depending on the bulb and jurisdiction, a spent/broken bulb might be classified as hazardous waste legally requiring special cleanup considerations, or it might legally be able to be thrown in a dumpster. But regardless of the law you should properly recycle 100% of bulbs because they contain mercury (even if in small amounts).

Re:Return of incandescent light bulbs as MIT makes them more... by ZenoArrow on Wednesday May 25, 2016 @07:50PM (#11774101)
Well explained, thank you for that.

This is off topic but, would you mind changing your username? I get that it's mostly harmless but it's against the usual HN guidelines.

Re:Return of incandescent light bulbs as MIT makes them more... by MOARDONGZPLZ on Friday May 27, 2016 @12:07PM (#11786922)
Dongz is a surname, fyi.
Re:Return of incandescent light bulbs as MIT makes them more... by derekp7 on Wednesday May 25, 2016 @03:07PM (#11772277)
> What are you spending so much on electricity on

I tried to figure this out for my household... 1) The squirrel cage on the HVAC unit uses about 600 watts. 2) Couldn't convince everyone in the house to turn off TVs when they leave their rooms. 3) Laundry (gas dryer, but again there is a motor on it). 4) Dish washer 5) Fridge/Freezer.

I added up the cost of leaving lights on in all all the rooms (10 60-watt bulbs) 24x7, and that would only cost $43 a month. Typically only half would be on, and for a few hours in the evening, (5 bulbs, 4 hours a night, 10 cents/kwh), and that comes to $3.60 a month.

Re:Return of incandescent light bulbs as MIT makes them more... by ars on Wednesday May 25, 2016 @06:21PM (#11773610)
You have a 600 HVAC watt fan, and only 10 bulbs in your house?

I have approximately 40 bulbs and I don't think I have a large house.

And I have not been able to convince people not to turn on the light during the day, so my usage is closer to 12-18 hours per day.

Re:Return of incandescent light bulbs as MIT makes them more... by derekp7 on Thursday May 26, 2016 @03:16PM (#11780698)
Some rooms have more than one light but typically only one would be used. Examples:

Master bedroom -- 2 lamps, but one is mine, which is hardly ever turned on.

Kids rooms -- one overhead hanging (swag) light each. Plus the closet light, but I'm not counting that as it is already a low voltage bulb (code requirement).

Living room -- the foyer has hanging light with 3 candelabra bulbs, which are 20 watts each. The dining room (the other side of the great room) has a hanging light with 5 bulbs, again 20 watts each. So one room is 60 watts, the other is 100.

Kitchen/family room -- overhead long tube fluorescent (120 watts total), family room had a torch light.

Bathrooms have multiple bulbs (4, 6, and 10 bulbs for the 3 bathrooms), but most of them are burned out and/or unscrewed. And they were 25 watt bulbs. So I'm counting an average of 60 watts per bathroom.

Basement has 6 bulbs total, but only a couple are used on the way to the laundry.

So slightly more than the equivalent of 10 60-watt bulbs for the lights that are used most often. At first I thought that I could save a lot with the compact fluorescent bulbs, but I really didn't see any change in the electric bill after changing out all that I could -- the chandeliers take the candelabra bulbs, and while I could get fluorescents to fit they would be way too bright. Same with the bathrooms, I didn't want 10 bulbs in one bathroom that put out the same lumens as 10 60-watt incandescents, and I couldn't readily find any fluorescent or led bulbs that were equiv. to a 20-watt incandescent.