A System Modeling Approach for Light-Duty Vehicles and On-Board Hydrogen Storage Systems

Monday, November 8, 2010: 3:15 PM
Alta Room (Marriott Downtown)
Kristin L. Day, Matthew J. Thornton and Aaron D. Brooker, National Renewable Energy Laboratory, Golden, CO

Widespread adoption of hydrogen-fueled vehicles is heavily dependent on overcoming the challenges associated with on-board hydrogen storage. Identifying a means to store enough hydrogen capable of enabling a driving range greater than 300 miles within vehicle-related constraints is critical. High level vehicle, cost, and viability models integrated with detailed, low pressure, material-based hydrogen storage system models provide a means to assess the performance of a particular storage system technology in a vehicle context. The likelihood of this technology meeting the overarching vehicle system goals and thus becoming competitive with current vehicles can therefore be estimated. This paper discusses the methodology developed to evaluate the performance of various on-board hydrogen storage system technologies. Performance results focused on hydride, adsorbent, and chemical storage technologies will be presented and compared to vehicle-related packaging, cost, and performance requirements. Unique characteristics of each storage system including gravimetric capacity, volumetric density, transient response time, full flow rate, and cost will be identified and their effect on the viability of a theoretical vehicle will be assessed.

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