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Government agencies fund improved fuel economy research at Virginia Tech

A team of Virginia Tech engineers has received a three-year, $1.5 million award from the National Science Foundation and the Department of Energy to investigate specific ways to reduce emissions from vehicles and to improve fuel economy.

The researchers hope to develop new thermoelectric materials and specific designs to achieve their goals of improved fuel efficiency and reduced pollution. Thermoelectric materials are able to directly convert heat into electricity.

"As an example, we will use the waste heat from the exhaust to generate additional electrical power, allowing a vehicle to produce a modest increase in gas mileage," said Scott Huxtable, associate professor of mechanical engineering at Virginia Tech and the principal investigator on the project.

Huxtable's Virginia Tech colleagues, Daniel Inman, the George Goodson Professor of Mechanical Engineering, and Srinath Ekkad and Shashank Priya, both associate professors of mechanical engineering, as well as Andrew Miner, founder and chief executive officer of Romny Scientific, are the co-principal investigators. All are well known in the energy field.

This project involves researchers from the recently announced Center for Energy Harvesting Materials and Systems at Virginia Tech, directed by Inman. Romny Scientific is one of its industrial partners.

The researchers will use new techniques to rapidly synthesize certain classes of materials, called skutterudites and silicides, which are thermoelectric in nature. By carefully tailoring the composition and structure of these new materials, the aim is to develop efficient thermoelectric materials that can be manufactured at large scales and low cost. These new materials will be integrated into optimized heat exchanger modules that will extract heat from the vehicle exhaust, allowing for the thermoelectric materials to generate useful electric power from energy in the exhaust that currently is wasted, Huxtable explained.

Undergraduate and graduate students will be involved in the research and will be given opportunities for internships with the industrial partner, Romny Scientific, and the Naval Undersea Warfare Center. The research will be integrated into coursework including an existing graduate course with a specific focus on energy harvesting.


Contact: Lynn Nystrom
Virginia Tech

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