1. Scope
This practice describes apparatus and a procedure for the sampling of high pressure hydrogen and related fuel cell feed gases from fueling nozzles and similar interfaces used in fueling automotive vehicles and stationary appliances.
Hydrogen is delivered to fuel cell powered automotive vehicles and stationary appliances at pressures up to 5000 psig. The purity of hydrogen is an important factor in maximizing the efficiency and life span of proton exchange membrane based fuel cells. Contaimiation can come from the production of fuel cell feed gases, storage tank containment walls, and fuel delivery systems up to and including automobile and other appliance fueling nozzles and similar interfaces. Collection of a representative sample of fuel delivered to a vehicle or appliance is crucial for assessing the purity of the fuel in real world application. In order to do this, a practice describing a sample collection apparatus and sampling procedure for high pressure fuel cell feed gases is needed. Potential users include, government regulatory agencies, fuel cell manufacturers, energy production entities, and organizations dedicated to the demonstration and application of fuel cells to societies needs.
Keywords
sample containment; representative sampling; hydrogen purity; proton exchange membrane
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
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