45 LPW Incandescent?

[TKM]

At the Energy Star Conference in Denver a few weeks ago, Advanced Lighting
Technologies (ADLT) stirred things up nicely by announcing that they would
be introducing, along with CFL manufacturer TCP, high efficacy incandescent
lamps based upon IR filter technology. The first lamps would be available
in 2011 to meet the new requirements for the 100 watt GLS lamp in California
(those same requirements go nationwide a year later).

High efficacy, according to ADLT's presentation, means 30 lpw in 2011 with
the potential to reach 45+ lpw by 2020 (1700 lumens with a 35 watt lamp).

The ADLT presentation is on line at:
http://www.energystar.gov/index.cfm?c=partners.pt_meetings Download the one
by Steve Stockdale, Advanced Lighting Technologies.

A 45 lpw lamp would also meet the 2018 Tier 2 California efficacy
requirements opening the possibility that GLS incandescent lamps would
remain available in the U.S. unless new legislation were to be passed.

There's often a difference between announcements and actual products at
reasonable prices, of course; but how do you think the predicted demise of
incandescent lamps would be affected if these higher-efficacy products do
appear?

Terry McGowan

 

[Victor Roberts]

At the Energy Star Conference in Denver a few weeks ago, Advanced Lighting
Technologies (ADLT) stirred things up nicely by announcing that they would
be introducing, along with CFL manufacturer TCP, high efficacy incandescent
lamps based upon IR filter technology. The first lamps would be available
in 2011 to meet the new requirements for the 100 watt GLS lamp in California
(those same requirements go nationwide a year later).

High efficacy, according to ADLT's presentation, means 30 lpw in 2011 with
the potential to reach 45+ lpw by 2020 (1700 lumens with a 35 watt lamp).

The ADLT presentation is on line at:
http://www.energystar.gov/index.cfm?c=partners.pt_meetings Download the one
by Steve Stockdale, Advanced Lighting Technologies.

A 45 lpw lamp would also meet the 2018 Tier 2 California efficacy
requirements opening the possibility that GLS incandescent lamps would
remain available in the U.S. unless new legislation were to be passed.

There's often a difference between announcements and actual products at
reasonable prices, of course; but how do you think the predicted demise of
incandescent lamps would be affected if these higher-efficacy products do
appear?

Terry McGowan

Many people are wedded to incandescent lamps for their color
quality and dimmability, if nothing else. They would
continue to buy even current generation incandescent lamps
if the government would let them.

Add to this typical incandescent characteristics such as
light weight, immunity from shorter life in hot fixtures
and no decrease in life with frequent cycling, and the lamp
beats both CFLs and LEDs in many applications.

The potential for vastly improved efficacy incandescent
lamps using IR reflector technology is real. There is no
violation of the laws of physics, as we see in some many
other claims. The issue has always been the design of
practical reflectors, and proper positioning of the filament
in the arc tube.

ADLT was founded by people who developed Halarc at GE, and
left to form their own company when GE killed that project.
Halarc was an innovative product, and ADLT seems to have
maintained the spirit for innovation and creativity.

Parts of this project seem to use some of the technology
developed for Halarc, such as a precision double-ended
filament tube, which may even be made from quartz, as was
the precision double-ended quartz arc tube in Halarc.

I'm always skeptical about claims of "future performance,"
but the LED industry has been living on their own claims of
"future performance" for almost 11 years now.

LEDs have serious issues with heat dissipation in A-line
format lamps that produce more than about 1000 lumens. I
have not yet seen a practical solution to this problem, and
we may not get one until LED efficacy goes up a factor of 2.

So, while LEDs may be a good solution for downlights, the
huge incandescent A-line market is still looking for a
savior, and this may be it.

When can I buy them???

--
Vic Roberts
http://www.RobertsResearchInc.com
http://www.cflfacts.com
sci.engr.lighting Rogues Gallery http://www.langmuir.org
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