Patent ID: 11920736
Assignee: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 7:
8. A method for filling tanks of fuel cell electric vehicles with pressurized hydrogen, comprising the steps of:
providing the system of claim 1;
pumping a stream of liquid hydrogen from said storage vessel, with said liquid hydrogen pump, to produce a stream of pressurized hydrogen;
warming said stream of pressurized hydrogen in said warming circuit of said first heat exchanger to produce a warmed stream of pressurized hydrogen;
filling one or more of said at least one buffer vessel with said warmed stream of pressurized hydrogen;
pumping, with said main HTF pump, a stream of a main HTF from said surge vessel;
cooling said pumped stream of the main HTF in said cooling circuit of said first heat exchanger to produce a cooled stream of the main HTF;
warming said cooled stream of the main HTF in said warming circuit of said second heat exchanger to produce a warmed stream of the main HTF;
returning said warmed stream of the main HTF to said surge vessel;
in response to a request to fill a tank of a fuel cell electric vehicle with pressurized hydrogen, feeding a stream of pressurized hydrogen from said at least one buffer vessel to said second heat exchanger, cooling said fed stream of pressurized hydrogen in said cooling circuit of said second heat exchanger, and filling the tank;
feeding a stream of gaseous hydrogen from a headspace of said storage vessel to a second warming circuit of said first heat exchanger;
warming said fed stream of gaseous hydrogen in a second warming circuit of said first heat exchanger; and
venting said warmed gaseous hydrogen to the ambient atmosphere.