Deveopment of Protocols and Instrumentation for the Measurement of Exhaust Emissions from Alternatively-Fueled Internal Combustion Engines

Not Available Combining proton exchange membrane fuel cells with electrolyzers (PEMFC/EC) can offer higher efficiencies, higher power, long endurance missions. However, current proton exchange membrane fuel cell/electrolyzer PEMFC/ED systems need to improve the projected power and energy densities. PEMFC/EC systems, have previously been investigated for providing regenerative power based on one stack for the electrolysis of water and one for the PEMFC. Combining Giner, Inc. unique stack designs containing low cost molded light weight cell bipolar plates with integral flow fields with a cell spacing of 10 cells per inch and our innovative bi-directional electrodes will result in a stack projected to produce 1.1 kW/L and 0.7 kW/kg. Adapting our innovative stack designsto an existing UAV woudl expand tremendously the knowledge base for development of future UAFBs. Wehave teamed with AeroVironment Inc., designers and builders of serveral UAVs, including themost recent Centurion . The Centurion willinitially use Li/SO2 battery, but has limited flight times. The UAV of the future will have greater thatn three months flying time using a regenrative fuel cell system.