Browsing by Subject "fuel cell"
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Item MEA Manufacturing Using an Additive Manufacturing Process to Deposit a Catalyst Patter in an MEA and its Impact on Cost Reduction(University of Texas at Austin, 2010) Kulkarni, N.P.; Sparks, T.E.; Tandra, G.; Liou, F.W.The manufacturing of a fuel cell Membrane Electrode Assembly (MEA) is a significant cost driver in polymer-electrolyte membrane (PEM) fuel cell technologies, primarily due to the inclusion of expensive materials in the catalyst layer. The selective deposition of a catalyst on the MEA of a fuel cell can drastically reduce the costs depending upon the catalyst, method used for deposition, and production volume. In this paper, testing and analysis of a novel catalyst iridium oxide is discussed. The performance of the catalyst will be compared with the conventional catalysts which will give us an estimate of its effectiveness however, in this paper, only its feasibility in terms of cost is discussed.Item Prime mover and energy storage considerations for a hydrogen-powered series hybrid shuttle(IEEE, 2007-09) Flynn, M.M.; Hearn, C.; Lewis, M.; Thompson, R.C.; Longoria, R.This paper describes simulation results obtained through modeling the operation of a 6.7 m long hydrogen-powered shuttle bus. The actual shuttle bus and its hydrogen refueling station constitute the first of its kind in the state of Texas. The simulations are used to initially verify the stated performance of the shuttle bus and to validate the modeling approach. The vehicle model is then modified to assess the predicted changes in performance, efficiency, and route following capability while conducting a parametric study involving fuel cell and internal combustion prime movers as well as chemical battery and flywheel energy storage systems. Simulation results show that a fuel cell-powered shuttle bus with a high power density, low mass energy storage system provides the highest vehicle range and lowest energy consumption.