ARPA-E Projects
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OnBoard Dynamics is modifying a passenger vehicle to allow its internal combustion engine to be used to compress natural gas for storage on board the vehicle. Ordinarily, filling a compressed natural gas vehicle with natural gas would involve driving to a natural gas refueling station or buying an expensive stand-alone station for home use. OnBoard's design would allow natural gas compression to take place in a single cylinder of the engine itself, allowing the actual car to behave like a natural gas refueling station. Ultimately, the engine would then have the ability both to power the vehicle and to compress natural gas so it can be stored efficiently for future use. The design would cost approximately $400 and pay for itself with fuel savings in less than 6 months.
The team led by Oregon State University (OSU) is developing a novel gas-to-liquid (GTL) technology that utilizes a "corona discharge" plasma to convert methane to higher value chemicals, such as ethylene or liquid fuels. A corona discharge is formed when a high voltage is applied across a gap with a shaped electrode that concentrates the electric field at a tip. At sufficiently high voltage, an electrical discharge (characterized by a faint glow - a corona) is formed, and ionizes the surrounding gas molecules, i.e. split them into positive ions and free electrons. The team will build a reactor consisting of an array of micro-structured conducting surfaces to form corona discharges that ionize methane molecules and recombine the ionized components to form longer chain hydrocarbons with higher value. The key advantages of this technology are the innovative reactor design, which will allow small-scale production, as well as the high energy and conversion efficiencies, resulting in less energy being consumed to convert methane to liquid fuels.
Oregon State University (OSU) will precisely measure the performance of three commercially-available home generators. The team will collect data on engine efficiency, endurance, emissions, and calculate a levelized cost of electricity (LCOE) for each generator. Published data on the performance of small generators is scarce, which has hampered efforts to identify where new technologies can be applied to improve the efficiency of small generators. The rigorous and repeatable measurements collected through this project will be an important step forward in developing future high-performance distributed power generation systems.