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US 2016/0102810 A1Published application
Compressed Natural Gas Storage and Dispensing System
AssigneeHolystone USA, Inc.
InventorR. Keith Barker
Life of this patent
Estimating the term…
Abstract
A compressed natural gas storage and dispensing system having descending pressure bulk storage banks in fluid communication with a supply source for CNG and high pressure storage banks in fluid communication with the descending pressure bulk storage bank, both banks being in fluid communication with fuel dispensers, wherein the delivery pressure of the CNG during simultaneous refueling of CNG powered vehicles is equalized.
Claims20
A compressed natural gas (CNG) storage and dispensing system comprising:
- a descending pressure bulk storage bank in fluid communication with a natural gas supply source;
- a high pressure storage bank in fluid communication with said descending pressure bulk storage bank;
- at least one dispenser adapted to refuel a CNG powered vehicle, each said at least one dispenser in fluid communication with said descending pressure bulk storage bank and with said high pressure storage bank;
- and
- a re-compressor in fluid communication with said descending pressure bulk storage bank and said high pressure storage bank, whereby CNG is delivered from said decreasing pressure bulk storage bank to said high pressure storage bank as needed to refill said high pressure storage bank.
2 more elements
A compressed natural gas (CNG) storage and dispensing system comprising:
- a descending pressure bulk storage bank in fluid communication with a natural gas supply source, said natural gas supply source being chosen from the group of natural gas supply sources consisting of a natural gas pipeline, transportable CNG supply tanks and transportable LNG supply tanks;
- a high pressure storage bank in fluid communication with said descending pressure bulk storage bank;
- at least one dispenser adapted to refuel a CNG powered vehicle, each said at least one dispenser in fluid communication with said descending pressure bulk storage bank and with said high pressure storage bank;
- wherein said at least one dispenser comprises one or more inlets, such that wherein said at least one dispenser comprises a single inlet, said descending pressure bulk storage bank and said high pressure storage bank are in fluid communication with said at least one dispenser through a manifold valve;
- and wherein said at least one dispenser comprises two inlets, said descending pressure bulk storage bank is in fluid communication with said at least one dispenser through one of said inlets and wherein said high pressure storage bank is in fluid communication with said at least one dispenser through the other of said inlets, and wherein said at least one dispenser comprises multiple fueling nozzles and is adapted to control the delivery of CNG from said descending pressure bulk storage bank and said high pressure storage bank such that the delivery pressure is equalized through all said fueling nozzles;
- a re-compressor, a backflow preventer and a temperature reducing heat exchanger in fluid communication with said descending pressure bulk storage bank and said high pressure storage bank;
- and
- a direct conduit between said high pressure storage bank and said descending pressure bulk storage bank, said direct conduit bypassing said re-compressor.
5 more elements
A method of refueling CNG powered vehicles comprising the steps of:
- providing a compressed natural gas (CNG) storage and dispensing system comprising:
- a descending pressure bulk storage bank in fluid communication with a natural gas supply source, said natural gas supply source being chosen from the group of natural gas supply sources consisting of a natural gas pipeline, transportable CNG supply tanks and transportable LNG supply tanks;
- a high pressure storage bank in fluid communication with said descending pressure bulk storage bank;
- at least one dispenser adapted to refuel a CNG powered vehicle, each said at least one dispenser in fluid communication with said descending pressure bulk storage bank and with said high pressure storage bank;
- wherein said at least one dispenser comprises multiple fueling nozzles and is adapted to control the delivery of CNG from said descending pressure bulk storage bank and said high pressure storage bank such that the delivery pressure is equalized through all said fueling nozzles;
- and
- a re-compressor, a backflow preventer and a temperature reducing heat exchanger in fluid communication with said descending pressure bulk storage bank and said high pressure storage bank;
- providing CNG to said descending pressure bulk storage bank and to said high pressure storage bank;
- delivering CNG to one or more CNG powered vehicles through said at least one dispenser, wherein said CNG is first delivered from said descending pressure bulk storage bank and then subsequently delivered from said high pressure bulk storage tank, and equalizing the delivery pressure of said CNG delivered to said one or more CNG powered vehicles;
- refilling said descending pressure bulk supply bank from one of said natural gas supply sources as needed;
- and
- refilling said high pressure storage bank with CNG from said descending pressure storage bank as needed by delivering CNG from said descending pressure storage bank through said re-compressor.
9 more elements
Dependencies are inferred from the claim text.