EE&T News: August 23, 2010

EE&T News: August 23, 2010

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August 23, 2011 Issue:

• "Green" job training but few "green" jobs
• Cool breakthrough in heat transfer
• Washers that don't wash, dishwashers that don't wash dishes
• Next battleground for EVs: Inverters
• Energy shorts
• The dynamics of wave energy
• 98%-efficient bus converters
• Power hub delivers eight segments of power

"Green" job training but few "green" jobs

It's back-to-school time again. But those headed back to school for "green" job training might want to reconsider their options judging by recent reports that there are plenty of "green" job training programs but comparatively few spots for their graduates.
As always, send your energy efficiency news to us at [email protected] -- Leland Teschler, Editor


Cool breakthrough in heat transfer

A researcher at Sandia National Laboratory has developed an air-bearing heat exchanger, also known as the Sandia Cooler, that could significantly reduce the amount of energy needed to cool computer chips. In conventional cooling devices used on CPUs, the bottleneck in getting heat out is the layer of dead air clinging to the cooling fins. In the Sandia Cooler, however, heat moves across a narrow (0.001-in.) gap between a stationary base and a rotating structure containing the cooling fins. READ MORE


Pumps perfect for environmental applications
The 617 Series Oil-Less WOB-L® Piston Pumps from Thomas Division feature quiet, low vibration and long-life operation with efficient intake filters that ensure a non-contaminated air flow. In addition, the 617 Series provides up to 26.8 in.Hg (907 mBar) of vacuum, or 100 psi (6.9 bar) of pressure – all with the proven reliability of Thomas' Oil-Less WOB-L® piston technology. Visit for more information.

Washers that don't wash, dishwashers that don't wash dishes

The EPA will soon toughen up its requirements for dishwashers that earn the Energy Star label. A careful reading of the EPA document reveals that the Agency is leaving room in future updates for levying a minimum requirement for cleaning. At some point in the future, Energy Star dishwashers must, in fact, get dishes clean. It looks as though EPA might have learned something on this score from the fiasco surrounding energy efficient washing machines that don't get clothes clean. READ MORE


Energy Efficiency Expo September 20-21 in Nashville
Energy Efficiency Expo 2011 is a trade fair showcasing products and services to help organizations reduce their energy consumption and become more energy-efficient. The event is designed to address the needs of managers and engineers who are responsible for facilities, manufacturing and industrial operations, equipment and machinery, as well as product and system designers. Numerous educational sessions will run concurrently with the exhibition, allowing attendees to obtain more in-depth information on specific areas of energy efficiency.

Next battleground for EVs: Inverters

Say the words “cost reduction” in a room full of electric vehicle engineers and “batteries” will be the likely response. But smaller and less expensive inverters are likely to help make the next generation of EVs more practical. Though it doesn't attract the fanfare, inverter technology is on the same do-more-with-less trajectory as EV batteries. READ MORE

Energy shorts

Buoy to power radar node off New Jersey coast
A clean-up kit for broken CFLs
How many solar cells does it take to power a microwave?
Low-energy nuclear reaction claim now in doubt
Got an idea for solid-state lighting? DOE wants to know
Next focus for energy regs: coffee makers

The dynamics of wave energy

In the quest for green energy, engineers have increasingly viewed tides and ocean waves as sources from which they can harvest energy. But there is no one single technology that has emerged as a standard for harvesting wave energy. There are several viable methods being studied, including a captor which collects energy from the oscillatory motion of waves, power take-off equipment which converts mechanical energy into electricity, and an anchoring system which holds the wave energy converter (WEC) in place. READ MORE


98%-efficient bus converters

he IBC054 Series of VI Brick bus converters are available as drop-in upgrades for industry-standard 5:1 and 4:1 converters. These eighth and quarter bricks are 98% efficient from a 36 to 60-V input voltage range at power levels from 300 up to 750 W, with 2,250-Vdc isolation from input to output. The converters offer a transient surge capability of 75 Vin for 100 msec for telecom, power-over-Ethernet, and other applications.
An online cross-reference selection tool lets users upgrade to a high-efficiency converter. A simple interface, searchable by manufacturer or part number, lets users search bricks, quantify relative power savings, and select a more-efficient product.
Vicor Corp.

Power hub delivers eight segments of power

The FieldConnex compact power hub targets larger process automation projects. It delivers eight segments of redundant power in less cabinet space than comparable supplies. The hub supports intrinsically safe fieldbus segments according to Entity Ex ic or Ex nL classification and the High-Power Trunk concept. The modules are available for 21...23-V/500-mA or 28...30-V/500-mA operation.
The hub’s design concept is a compact motherboard that provides all necessary wiring connections and interfaces. All connections are plug-in with retaining screws for long-lasting connections, even under continuous vibration. The motherboard can hold up to 16 plug-in power modules to supply redundant power for up to eight Foundation Fieldbus H1 segments.
Pepperl+Fuchs Inc., Process Automation Div.

Today's Energy Efficiency News update brought to you by:
Cirrus Logic


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