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Saving energy and the environment with Flywheels
Date:4/6/2009

epend on an uninterrupted flow of energy. A typical power outage is very short and most hospitals and data centers have back-up diesel generators, meaning the extra energy storage of an industrial battery is never fully utilized. Most outages are well within a flywheel's capability, but when the outage persists, the flywheel absorbs damaging power abnormalities then gracefully transfers to the generatormeeting emergency power regulations that stipulate gensets must be able to assume the load within 10 seconds. Flywheels also have a higher tolerance for rapid cycling.

"I am very pleased with the fuel and emissions savings results we are seeing and with additional improvements currently under research that aim to improve the savings further," says Flynn. "Future work will investigate the feasibility of using flywheels in subway rail stations to accelerate one train with the braking energy recovered from another. Doing so will not only save energy but can be used to defer or eliminate the costs of adding utility substations as rail service grows."


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Contact: Stephanie Peco
speco@mail.utexas.edu
512-232-4298
University of Texas at Austin, Electrical & Computer Engineering
Source:Eurekalert

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