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EE&T News: February 13, 2012
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EE&T NewsThe latest news in energy efficiencyFebruary 13, 2012Where
are they now?Lithium-ion......capacitors?A
solar panel built into your windowNational
Electrical Code looks at EVsEnergy
shortsNow
you, too, can own an L-Prize LED bulb
Where are they now?With a
proposed extension of the production tax credit for wind power now
making its way through the legislative process, perhaps it is
appropriate to return to an old story about what happened to a
batch of wind turbines erected in the 1980s after their tax
benefits ran out. You can find a link to the main story in our
blog area.
As always, you can send your energy efficiency news to us at
eeteditor@penton.com --
Leland Teschler, Editor
Featured Content
Lithium-ion......capacitors?As you might
suspect, a lithium-ion capacitor is a kind of ultracapacitor. But
you won't see any headlines about lithium-ion capacitor fires.
Unlike the battery chemistry, lithium-ion caps don't heat up. The
lithium-ion capacitor's claim to fame is an energy density four
times higher than that of conventional electric double layer
capacitors (EDLC), i.e. supercaps. It also has a maximum cell
voltage of 3.8 V, about 50% higher than ordinary supercaps. This
lets about one-third fewer cells connected in series provide a
target voltage.
Read Full
Story
Advertisement
A solar panel built into your windowA solar cell
that is 9.1% efficient doesn't sound like much, but it is
impressive when you are talking about a polymer/fullerene organic
solar cell. Organic cells on plastic substrates have been able to
demonstrate about 6% efficiency at best. But that changed recently
when Polyera Corp. managed to get 9.1% efficiency out of its
inverted bulk heterojunction solar cell architecture. The
significance of this development is that it brings organic solar
cells close to the 10% efficiency mark that manufacturers like
Polyera say is necessary to realize any kind of a commercial
product.
Read Full
Story
AdvertisementBoker's 2012 Washers Catalog
Boker's complimentary 2012 Washer Catalog offers a selection of
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National Electrical Code looks at EVsThough
electric vehicles are relatively new on the scene, the National
Electrical Code has incorporated rules about their safe use as far
back as the 1990s, when the Society of Automotive Engineers
sponsored an article on EVs that became Article 625. There continue
to be updates, primarily covering new terminology and provisions to
use EVs as a source of power for premises wiring systems. In that
regard, NFPA’s Standards Council recently issued two
Tentative Interim Amendments to Article 625 in the 2011 NEC.
Read Full
Story
Energy shortsGaN FETs get more attention: This time it's a
low-side gate driver
How to make energy guzzling set-top boxes more
energy efficient
Schottky diodes target solar arrays
A gate driver for beefy EV inverters
Power supplies efficient enough for ErP
Motor drives for Energy Star
appliances
LED Lighting
Now you, too, can own an L-Prize LED bulbConsumers can
now own an LED-based bulb that has the equivalent of a 60-W
incandescent bulb's lumen output. The vaunted DOE L-Prize winner
from Philips, now given the catchy name of
10A19/LPRIZE-PRO/2700-900 DIM 10/1, goes on sale this month. One
problem: It will set you back $50. The price, of course, will drop
over time.
Read Full
Story
Featured LinksThomas
Division
Thomas provides OEM pump and compressor innovations for
environmental applications with oil-less technology offerings
including WOB-L® and articulated piston, diaphragm, rotary, linear,
and liquid pumps.
www.gd-thomas.com
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