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Alliance AutoGas launches 5300-mile, 12-city Coast-to-Coast Clean Air Ride with converted F-150

Green Car Congress

The converted F-150 will travel across the country from Kansas City to Seattle, WA, and back through the US, stopping along the way, to complete its journey in Jacksonville, FL, on 18 May, followed by a Homecoming event in Asheville, NC, on 23 May. The propane mower is a 2013 Exmark Lazer Z Ultra Cut 60. It is powered by a 25.5

F-150 150
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Virginia Clean Cities requests proposals from Southeastern fleets interested in converting to propane Autogas

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The Virginia Department of Mines, Minerals and Energy (DMME) and Virginia Clean Cities (VCC) at James Madison University (JMU) are requesting proposals from fleets in the southeastern US interested in converting eligible gasoline vehicles to run on propane autogas. The application deadline is Friday, 12 August 2011, at 5pm EDT.

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Georgia Tech prototype triboelectric nanogenerator could extract energy from ocean waves

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Researchers at Georgia Tech have developed an inexpensive and simple prototype of a triboelectric nanogenerator that could be used to produce energy from ocean waves by making use of contact electrification between a patterned plastic nanoarray and water. A report on their work is published in the journal Angewandte Chemie. —Lin et al.

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Georgia Tech life-cycle study finds TCO of medium-duty electric and diesel delivery trucks similar; electric life-cycle energy use and GHG lower than diesel

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DC converter, inverter, and electric motor) efficiency and the loss in charging/ discharging. Brown (2013) Electric Urban Delivery Trucks: Energy Use, Greenhouse Gas Emissions, and Cost-Effectiveness. Electric grid transmission and distribution efficiency (from power plants to end-use customers) is the third component.

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Ryder’s natural gas fleet surpasses 20 million miles

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The fleet consists of liquefied natural gas and compressed natural gas tractors serving more than 40 customer operations in California, New York, Texas, Arizona, Michigan, Utah, Georgia, and Louisiana. Since deploying its natural gas vehicle program in 2011, Ryder has replaced approximately 3.1

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NREL/UGA study finds microbial enzyme digests cellulose ~2x fast as current leading commercial cellulase; implications for biofuels cost

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When researchers compared CelA to Cel7A, they discovered that at its optimal temperature of 50 degrees Celsius (122 degrees F), Cel7A achieves only 50% of the performance of CelA when converting Avicel. This discovery could reshape the landscape of commercial cellulase cocktail design. Roman Brunecky, Markus Alahuhta, Qi Xu, Bryon S.

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NREL enzyme enables conversion of biomass to sugar up to 14x faster than current alternatives; changing the economics of conversion

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In one scenario, the best commercially used enzyme converted sugars at a 30% extent in seven days. CelA converted to double that extent. Conventional cellulases such as Cel7A (left side of figure) use a surface ablation strategy to deconstruct cellulose, converting single layers of cellulose strands. —Berlin (2013).