A gas supply device includes a storage container that accumulates liquefied gas, a vaporizer for vaporizing liquefied gas derived from the storage container, a compression device that compresses gas vaporized from the liquefied gas in the vaporizer, a pressure accumulator that accumulates gas compressed in the compression device, and a supply path linked to a dispenser from the pressure accumulator.

A method for controlling the ambient temperature vaporization of carbon dioxide, including introducing a liquid carbon dioxide stream at a supply pressure into a pressure reduction valve, thereby producing a carbon dioxide stream at a delivery pressure is provided. The method includes introducing the carbon dioxide stream at the delivery pressure into a heat exchange device, thereby exchanging heat between a stream of ambient temperature air and the liquid carbon dioxide stream, thereby producing a vaporized carbon dioxide stream at the delivery pressure, and introducing the vaporized carbon dioxide stream at the delivery pressure into a backpressure regulator, thereby maintaining the vaporized carbon dioxide stream above a minimum delivery pressure.

A controlled ambient temperature vaporization system including a source of liquid carbon dioxide at a supply pressure, a pressure reduction valve is provided. The system is configured to reduce the liquid carbon dioxide from the supply pressure to a delivery pressure, a heat exchange device. The system is also configured to exchange heat between a stream of ambient temperature air and the carbon dioxide at delivery pressure, thereby producing a vaporized carbon dioxide stream. The system also includes a backpressure regulator, configured to maintain the vaporized carbon dioxide above a minimum delivery pressure.

A gas storage system for storing compressed gas, and method for constructing the system, are described. The system includes a borehole having a first borehole portion and a second borehole portion. An inflatable balloon is arranged within the second borehole portion. An upper support member, mounted on top of the inflatable balloon, is configured for anchoring the inflatable balloon to a sealing material filling the first borehole portion. A lower support member is arranged at the bottom of the inflatable balloon. The system includes an inlet gas pipe for filling the inflatable balloon from the gas compressing system and an outlet gas pipe for releasing the compressed gas. A compacted filling material is placed within a gap formed between the inflatable balloon, the upper support member, the lower support member, and an inner surface of the second borehole portion. One or more filling material pipes extend along the borehole to the gap for providing a filling material thereto.

A power generation system comprising: a liquefied natural gas (LNG) regasification unit configured to perform a regasification process to regasify LNG supplied from an LNG source to produce natural gas, the regasification process producing cold energy; a gas turbine configured to combust the natural gas to output power, the combusting producing an exhaust gas; a thermal storage unit configured to store heat obtained from the exhaust gas; and a Stirling engine configured to output power, the Stirling engine having a hot end heated by the heat stored in the thermal storage unit and a cold end cooled by the cold energy from the regasification process.

A compressed natural gas (CNG) refueling station system includes a compressor, a dispenser, and at least one of a valve and an orifice disposed in fluid communication between the compressor and the dispenser.

A thermal storage subsystem may include at least a first storage reservoir configured to contain a thermal storage liquid at a storage pressure that is greater than atmospheric pressure. A liquid passage may have an inlet connectable to a thermal storage liquid source and configured to convey the thermal storage liquid to the liquid reservoir. A first heat exchanger may be provided in the liquid inlet passage and may be in fluid communication between the first compression stage and the accumulator, whereby thermal energy can be transferred from a compressed gas stream exiting a gas compressor/expander subsystem to the thermal storage liquid.

Compressed gas dispensing methods using cascade dispensing from a first plurality of storage vessels and a second plurality of storage vessels. A compressor is used to provide very high pressure compressed gas for the second plurality of pressure storage vessels. Various methods are described for different sources of the compressed gas. The methods are particularly suitable for dispensing hydrogen into storage vessels in vehicles.

An intelligent fuel storage system can consist of a storage pod connected to a storage module with the storage pod having a plurality of separate storage vessels each residing below a ground level. The storage pod may concurrently store a first volume of a first fuel and a second volume of a second fuel prior to altering the first and second volumes in accordance with a performance strategy generated by the storage module to provide a predetermined blend of the first fuel and second fuel with at least a threshold volume and at least a threshold pressure.

The present disclosure is related to systems and/or methods for energy storage in desert environments. Various embodiments described herein include a system for subterranean energy storage. The system can comprise a subterranean flexible storage vessel coupled to a heat exchanger. The heat exchanger can be configured to supply a cooled compressed gas stream to the subterranean flexible storage vessel. Further, the subterranean flexible storage vessel can be at least partially surrounded by sand. Additionally, the system can comprise a turbine generator coupled to the subterranean flexible storage vessel. The subterranean flexible storage vessel can be configured to supply a pressurized gas stream that is heated by the sand to the turbine generator.