As the price of gasoline heads toward $4/gallon in the U.S., even cockamamie alternatives to petroleum-fueled power sources are looking increasingly attractive. Meanwhile, we are putting the March-April print issue of EE&T to bed, which will have more to say on that subject. Look for it in a couple of weeks. And send your energy efficiency news to us at [email protected]. - Leland Teschler, Editor
Electric vehicle riders want to be as efficient as possible, but they generally don't like the idea of riding around in a sauna bath when the outdoor temperature hits triple digits. Ditto for frozen toes in the winter. Problem is, conventional A/C sucks a lot of juice, and there's little waste heat for the passenger compartment on an EV. But the PNNL says adsorption heating and cooling could be an efficient means of keeping EV riders at a comfortable temperature.
The updated IECC is a template for legal jurisdictions interested in implementing an energy code. So it is worth perusing if you are planning products going into any kind of residential or commercial building that has to demonstrate energy efficiency.
The PAR 38 category of the L Prize competition recently reopened after being suspended in January 2011. The interruption, says DoE, was to incorporate lessons learned from the recently completed L-Prize 60-W replacement lamp competition. The new Competition uses the same vetting and testing procedures as in the old, along with the same U.S. sourcing requirements. But DoE has made some changes aiming to shorten the competition timeline and reduce testing costs -- testing costs for DoE, not for entrants.
The average auto owner may someday own an electric vehicle, but perhaps not the battery that runs it. That’s one of the schemes now in the dry-run phase aimed at getting around prohibitively high vehicle costs. The reason: Consumers start to back off when the car purchase price approaches about $25k. That’s one factor that explains why EV sales in the U.S. fell short of expectations in 2011. While the EV market may expand a bit this year, the cost for the batteries going in EVs and plug-in electrics (PEVs) has become center stage --- and some skeptics wonder whether battery technology will ever be ready for prime time.
Separable high-capacity cylindrical roller bearings support high-speed shafts in wind-turbine gearboxes. The bearings have high load-carrying capacity and eliminate risks of roller-to-roller smearing and adhesive wear. Full dimensional exchangeability with standard counterparts lets them fit existing design envelopes whether for initial designs or replacement upgrades. Key features and benefits include a lightweight brass cage that promotes lower inertia to reduce the risk of roller smearing; integrated cage guidance on the inner ring (shoulder) reduces roller slip, risk of smearing, and improves reliability; optimized play between rollers and cage bars provides greater safety and reliability; and black-oxidized rollers improve both running behavior and oil-film buildup. The bearing’s separable design promotes quick and easy mounting/dismounting for reduced operating, maintenance, and lifetime costs per kilowatt hour. SKF USA Inc.
Thomas 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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