Updated: 11/24/2005; 11:21:28 PM.

Future energy
Renewables, fuel cells, hydrogen, and efficiency

daily link  Friday, August 27, 2004

GM Hybrid buses for Yosemite Park: "Yosemite National Park [is] investing in transit buses powered by GM's hybrid technology, which offers up to 60% greater fuel economy and 90% cleaner emissions. The General Services Administration (GSA) has awarded a contract for 18 new 40-foot diesel-electric hybrid buses, which are scheduled to go in service in May 2005. Gillig Corp., of Hayward, Calif., manufactures the buses.

GM-hybrid-equipped buses are currently in revenue service in Philadelphia and Seattle, which will have more than 230 hybrid buses in service by the end of 2004, representing the largest hybrid bus order in history. In addition, the hybrid buses are in "preview programs" in over a dozen major North American cities, including Minneapolis, Portland and Houston. ..

"Several types of alternative fuel buses were seriously considered," commented Yosemite National Park Superintendent Mike Tollefson. "The decision to pursue diesel electric hybrids was based on a significant improvement in fuel economy, dramatically reduced emissions, and noticeably quieter operations. .."

"General Motors' hybrid strategy focuses on applying fuel-saving hybrid technology where it makes the most sense, on vehicles like transit buses, full-size pickup trucks and sport utility vehicles," said Tom Stephens, group vice president of GM Powertrain. "For example, replacing the 13,000 buses operating in the nine largest transit markets in the United States with our hybrid technology would result in annual savings of almost 40 million gallons of fuel, equivalent to nearly half a million small hybrid passenger vehicles." "  10:04:27 PM  permalink  

Futuristic factories make mesh: "Industrial motors (not including facility heating and ventilating) consumed 679 billion kilowatt hours in the United States in 2003. That's 63 percent of all electricity used in industry and 23 percent of all electricity sold in the United States last year, according to the Energy Department. .. DOE figures a wireless sensor network could increase a motor's efficiency by 10 to 20 percent, which corresponds to a total U.S. energy savings of 120 trillion BTUs (35.1 billion kW-hr) per year..

Sensicast has devised a suite of control programs that have frequency "agility" that is, they seek out the clear frequencies and attempt to evenly spread out the simultaneous communications going on among the nodes on the mesh.  ..

Each wireless sensor will operate for years on a single battery charge, but for the future, GE is working on new technology that could harvest the vibrational energy of the motor itself to power the transceivers. Rensselaer, for its part, will be developing a physics-based model that will enable turnkey analysis and lifetime predictions from the sensor outputs of a motor. "

  7:59:29 AM  permalink  

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Copyright 2005 © Ken Novak.
Last update: 11/24/2005; 11:21:28 PM.