Method and system for tank refilling
First Claim
1. A method of operating a hydrogen gas filling station comprising:
- obtaining a first set of parametric data corresponding to a hydrogen powered vehicle;
obtaining a second set of parametric data corresponding to station capabilities;
obtaining a third set of parametric data corresponding to a refueling ambient temperature;
calculating an MC value based on the parametric data obtained; and
determining a projected fill time that is predicted to produce a gas final temperature Tfinal no greater than a target temperature T and achieve a state of charge of 100% within a tank according to;
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Abstract
Disclosed is a simple, analytical method that can be utilized by hydrogen filling stations for directly and accurately calculating the end-of-fill temperature in a hydrogen tank that, in turn, allows for improvements in the fill quantity while tending to reduce refueling time. The calculations involve calculation of a composite heat capacity value, MC, from a set of thermodynamic parameters drawn from both the tank system receiving the gas and the station supplying the gas. These thermodynamic parameters are utilized in a series of simple analytical equations to define a multi-step process by which target fill times, final temperatures and final pressures can be determined. The parameters can be communicated to the station directly from the vehicle or retrieved from a database accessible by the station. Because the method is based on direct measurements of actual thermodynamic conditions and quantified thermodynamic behavior, significantly improved tank filling results can be achieved.
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Citations
14 Claims
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1. A method of operating a hydrogen gas filling station comprising:
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obtaining a first set of parametric data corresponding to a hydrogen powered vehicle; obtaining a second set of parametric data corresponding to station capabilities; obtaining a third set of parametric data corresponding to a refueling ambient temperature; calculating an MC value based on the parametric data obtained; and determining a projected fill time that is predicted to produce a gas final temperature Tfinal no greater than a target temperature T and achieve a state of charge of 100% within a tank according to; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification