On Dec 28 2010, 6:59*pm, RHF wrote:
On Dec 28, 6:09*pm, First Post wrote:



On Tue, 28 Dec 2010 15:37:59 -0600, D Peter Maus
wrote:

On 12/28/10 15:20 , Sid9 wrote:

3500K matches candle light and incandescent lighting.

We become so accustomed to orange/yellow lighting at night that we think
that's the way it ought to be.

"Daylight" lamps more closely reproduce colors correctly indoors and, I
believe, when prejudices are overcome, will become the standard.

CFL's a good first step away from the inefficient incandescent lamp.

* CFL's are going to be the DAT of lighting--an intermediate step into
a new paradigm to be quickly surpassed by other technologies currently
on the rise.

The next step is even MORE efficient: LEDs where both color and
brightness can easily be controlled by the user.

* That's where it's going to go. I've been experimenting with LED
lighting for 10 years, now, building my own systems as I go. Commercial
LED lighting is still anemic, and not as long-term stable as claimed for
it, except in monochromatic applications.

* But it's evolving quickly, and is on track to become the defacto
standard in less than a decade. Leaving CFL's in the dust.

Currently, in just day to day life, you can see LEDs being used in
traffic signals, tail lights in all forms of vehicles, and a great
increase in high output lamps such as in spotlights and all sizes of
flashlights. *In the very near future you will see vehicle headlights
as well as home lighting using LEDs as a standard. *
Commercial LED lighting is not going to remain "anemic" very long.
Right now you can get LED street lights with the following specs:
Power Consumption: 112W LEDs (132W total)
Replaces 250W HPS (325W total)
Expected Life: 50,000 hours (2083 days or 5.707 years)
LED Output:
Luminous Flux: 8,400lm
Color Temperatu 2700K-3000K (warm white), 4000K-4500K (natural
white), 5000K-7000K (pure white)
Beam Spread: 120 degrees width, 60 degrees depth
Working Voltage: 85-264V AC, 12V or 24V AC/DC
Fits: 1.5" - 2.5" (35mm - 65mm) round pole or pipe
Dimensions: 28.25" (L) x 12.5" (W) x 3.5"(H) / 715mm (L) x 315mm(W) x
90mm(H)http://www.besthomeledlighting.com/product/SL-112W

Right now it's a pricey item but considering it's life expectancy is
over 5.7 years (if left on 24/7), compared to what most municipalities
use (HPS or MH), it's actually less expensive even without factoring
in the smaller power requirements as the other types of lamps require
replacement (based upon my own personal experience) around every 18 to
24 months due to various issues.

For the private sector, the owner of a shopping center or mall with
substantial parking, the savings in the electric bill along with far
less maintenance requirements could offset the intial cost per lamp in
as little as the first year or two.

And then there is the fact that the other types such as HID, MV, HPS
and MH have various issues such as HIDs shutting down due to any
voltage drop and taking up to 10 minutes to "restrike" or MVs not
liking cold environments or the Lumens depreciation of MHs or the
"cycling" of HPSs.

And LEDs are a hell of a lot less damaging to the environment and
pretty much non toxic compared to CFLs in the event of breakage.
Plus they are much safer to manufacture to boot.

Of course none of this is likely to be news to you but a little
corroboration never hurts yes?

LED are still Not-Ready-for-Prime-Time in most
American Homes -imho-

I have bought ~100 LEDs for various applications
and except for a few the LEDs have been too-dim
or failed too-quickly.

Presently CFL's do offer a Life-Time-Cost of Operations
and Energy-Environmental Advantage to be worth the
switch -imho-

Just Tax Excessive Energy Use And The Market Will
Dictate the Use of Incandescents & CFLs & LEDs.

yes - it is that simple ~ RHF
*.
-ps- Al Gore Should Be Paying A $1M A Month For
His 'Mansion's 17 Times the Average American Family's
Home Energy Usage.
*.
+plus+ A $100K Private Jet Tax For Every Flight
As He Promotes Carbon Credits and Taxes On
Working People Simply Trying To Light and Heat
Their Homes For Their Families.
*.
-fwiw- Al Gore Is A 'Carbon Credits' Eco-Criminal
{Enemy-of-the-Planet} -imho-
*.
*.

Al Gore and Prez Obama Institute New Inverted
Cap-and-Trade Energy Use Fees {Rate Scale}

The Poor : Low Energy Conservers PAY +3% MORE !
Raising The Cost of Daily Living On-the-Poor to
Light and Heat Their Homes for Their Families

The Rich : High Energy Wasters Pay -2.6% Less !
Giving the Rich A Free Ride to Light-Up Their
Mansions and Heat Their Pools and Hot-Tubs

? WHAT WRONG WITH THIS PICTURE ?

California PUC -allows- PG&E Rate Changes For 2011
http://www.mymotherlode.com/news/loc...-For-2011.html