[Chat] [Discussion] Article on LED lighting

[Stephen J Gewirtz]

Tweefie,

There are good LED bulbs, and there are bad LED bulbs.  That, plus the 
fact that prices are likely to drop, is why I am waiting. That is also 
why I made the point about color temperature.

At the moment, I have just one LED bulb in my house.  It has lasted so 
far for quite a while, but it is much too blue.  Do not confuse LED 
bulbs with CFL (compact fluorescent) bulbs which burn out much faster.

Steve

On 1/22/13 2:10 PM, tweefie at juno.com wrote:
> I plan to resist as long as possible, and am already hoarding regular light bulbs.
> LED lighting is ugly and less effective than the old type.
> Have you been to the intersection of Barclay and 30th ? Those are all LED lights, and they cast a bluish dim and creepy pall
> over the area.  And regular house LED bulbs that last 10 years?
> None of the ones I have bought so far have.....
>
> :O)
>
> *Not All Change Is Progress*
>
>    
>
> ---------- Original Message ----------
> From: Stephen J Gewirtz <gewirtz at bellatlantic.net>
> To: Charles Village Discussion List <discussion at charlesvillage.info>, The Charles Village Chat List <chat at charlesvillage.info>
> Subject: [Discussion] Article on LED lighting
> Date: Mon, 21 Jan 2013 21:50:50 -0500
>
> Here is an article in today's NY Times:
> http://www.nytimes.com/2013/01/22/business/leds-emerge-as-a-popular-green-lighting.html?hp
>
> The key point is that LED lighting (not the same as CFL lighting) is
> very energy efficient.  My own feeling is that I should wait a bit more
> (and use up my old spare CFL bulbs), but by the end of  next year, I
> hope to switch entirely to LEDs.  Right now, a bulb will cost $10 to $15
> or maybe a bit more, but it should last 10 years. In the long run, you
> will save enough on electricity to pay for the extra cost of the bulbs.
> According to the article, by some time in 2014, more LEDs will be sold
> than incandescent  bulbs.  But that may be because the old fashioned
> incandescent bulbs are becoming illegal to sell.  There will be more
> energy efficient halogen bulbs which I think are a form of incandescent,
> but they can get very hot and may present a fire hazard.  There probably
> will be other incandescent bulbs which meet the new energy efficiency
> standards and do not get as hot as halogen bulbs.
>
> Note that LED bulbs should drop substantially in price over the next
> year or so as more are sold.  Also, some lamps and lighting fixtures
> specify a maximum wattage incandescent bulb to use (because the bulbs
> put out heat), but it is safe to use an LED or CFL bulb that puts out a
> higher amount of light since it will generate less heat (and also will
> have a much lower wattage).  I note that an LED that puts out the amount
> of light of a 60 watt incandescent bulb uses about 10 watts of power.
>
> As I looked at LED bulbs on the Home Depot web site, I noticed that they
> specify color temperature.  The hotter the color temperature, the colder
> (more blue) is the lighting (yes, higher color temperature equals colder
> lighting).  Many bulbs were 2700K or 3000K (K stands for Kelvin, which
> is the Celsius temperature plus 273.1), which should approximate the
> color of the old incandescent bulbs.  A higher color temperature will
> approximate the color of daylight. You can google "color temperature" to
> get an idea of what it all means.
>
> According to the article, one can find bulbs where one can vary the
> color, but such bulbs cost about $200 for 3 bulbs and the control of the
> bulbs.  Personally, I just want plain LED bulbs that replace the
> incandescent ones and have about the same color temperature.
>
> Steve
>
>
>
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