Hydrogen refueling system
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsEtienne Werlen, Thierry Ott
Life of this patent
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Abstract
The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system includes a chiller including a cooling unit that cools a circulating refrigerant by a cooling medium, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the circulating refrigerant provided from the chiller, a circulation line that circulates the circulating refrigerant between the cooling unit and the heat exchanger, a chiller compressor that is provided in the chiller; a cold generation valve that is provided close to an inlet of the heat exchanger in the circulation line.
Claims12
A hydrogen refueling system comprising:
- a chiller including a cooling unit that cools a circulating refrigerant by a cooling medium;
- a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the circulating refrigerant provided from the chiller;
- a circulation line that circulates the circulating refrigerant between the cooling unit and the heat exchanger;
- a chiller compressor that is provided in the chiller, and feeds the circulating refrigerant into the cooling unit;
- and
- a cold generation valve that is provided close to an inlet of the heat exchanger in the circulation line.
A method for H2 refueling to vehicles comprising:
- detecting that a vehicle to be refueled with H2 is entering a hydrogen refueling station;
- opening of a cold generation valve that is provided close to an inlet of a heat exchanger in a circulation line;
- starting a chiller to cool a circulating refrigerant by a cooling medium;
- cooling down the heat exchanger by a cold circulating refrigerant cooled by a pressure reduction in the cold generation valve;
- and
- refueling cold H2 cooled down by the heat exchanger to the vehicle while maintaining a temperature of the heat exchanger within a predetermined temperature range or close to the target temperature.
Dependencies are inferred from the claim text.