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| Science Forum Index » Engineering - Lighting Forum » The Rebirth of the Incandescent Lamp... |
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| Don Klipstein... |
 Posted: Mon Jul 06, 2009 7:08 am |
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In <svp355hagl603pqj2edsa218skj78ek5dq at (no spam) 4ax.com>, Victor Roberts wrote:
[quote:4275c4652f]News article in today's New York Times.
http://www.nytimes.com/2009/07/06/business/energy-environment/
06bulbs.html?_r=1&hp
We've all seen this before. The potential gains are
certainly there for both IR reflective coatings and
spectrally selective filaments, but no one has been able to
tap those gains in over 25 years of work.
It will be interesting to see if lamps can be made that meet
the new performance targets.
[/quote:4275c4652f]
As the article says, Philips Halogena Energy Saver is already available
at Home Depot and Amazon. The 40 watt one meets the 2012/2014 energy
efficient requirements. Depending on who I listen to, the 70 watt one
either meets these or falls only slightly short.
[quote:4275c4652f]However, I would like to see the end of the "we have the
technology but none of the big lamp companies want to make
it" excuse. If the technology really exists, which also
means it will last for an economically reasonable life time,
there is no doubt that someone will make it. If someone
thinks they really do have a better lamp that they can't get
made, then they should publish the performance data,
verified by an independent laboratory, instead of just a
hype-filled press release.
[/quote:4275c4652f]
It appears to me that this is commentary on the claimed improvement of
IR reflective coating technology to achieve improvement of luminous
efficacy from 30% gain to 50% gain over that of conventional "standard"
incandescents. I do agree with this. It appears to me that a couple
times a year or so, someone supposedly has developed technology to make a
more efficient incandescent lamp, but it's vaporware.
- Don Klipstein (don at (no spam) misty.com) |
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