Patent ID: 6584825
Filing Date: 2003-07-01
Classification: C01B,F17C,G01N,Y02E

Abstract:
A method for determining the amount of hydrogen in a hydrogen storage vessel containing a known quantity of hydrogen storage media, comprising:measuring temperature at one or more points on the hydrogen storage vessel and calculating an average temperature for the hydrogen storage media; measuring mechanical strain at one or more points on the hydrogen storage vessel and computing the pressure inside the hydrogen storage vessel based on the measured mechanical strain; selecting a pressure, composition, temperature (PCT) operating curve from a family of PCT curves for the hydrogen storage media, based on the calculated average temperature; selecting an operating point on the selected PCT operating curve, corresponding to the computed pressure inside the hydrogen storage vessel; determining a value of hydrogen to metal ratio on the selected PCT operating curve corresponding to the selected operating point; and computing the quantity of hydrogen in the hydrogen storage vessel by multiplying the looked up hydrogen to metal ratio value by the quantity of hydrogen storage media.