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31.5.14

STUDY * USA: UD Delaware`s

* Delaware - Electric school buses, could save school districts millions if integrated with a vehicle-to-grid system, according to new research

(Photo: The Trans Tech bus model. Electric school buses that power grid could save school districts millions)
Newark,DEL,USA -UDaily -May 28, 2014: -- Electric school buses that feed the power grid could save school districts millions of dollars — and reduce children’s exposure to diesel fumes — based on recent research by the University of Delaware’s College of Earth, Ocean, and Environment (CEOE)... A new study examines the cost-effectiveness of electric school buses that discharge their batteries into the electrical grid when not in use and get paid for the service. The technology, called vehicle-to-grid (V2G), was pioneered at UD and is being tested with electric cars in a pilot project... The University of Delaware's, Yushan Yan, believes that electrochemical energy engineering is the key to reducing humankind's reliance on combustion as the dominant player in energy conversion... Adapting the system for school bus fleets is a logical application. School buses generally travel distances within electric vehicles’ battery range, and they are not in use for much of the day. Electric school buses also do not release sooty diesel exhaust, which contains pollutants that can cause respiratory irritation, lung cancer and heart disease... For the study, researchers analyzed existing diesel school bus routes in a mid-sized suburban school district in Delaware and calculated the costs and benefits of V2G-capable electric bus replacements. Over 14 years, which is the typical lifespan of a bus, a V2G electric bus fleet could save an estimated $38 million... The economic research took into account costs associated with fuel, electricity and batteries, as well as pollution-related health care expenses and other factors... A diesel bus costs $110,000, compared with $260,000 for an electric bus equipped with a V2G-capable, 70-kilowatt on-board charger...

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