Abstract: The present invention is a pressure tank comprising a tubular part and two bottoms (5) with the bottoms (5) positioned at the ends of the tubular part. The tubular part comprises a cylindrical wall (1) and a ply of circumferential reinforcing elements (2) wound around cylindrical wall (1). The elastic modulus of the material of cylindrical wall (1) is less than the elastic modulus of the material of the first ply of circumferential reinforcing elements (2). The invention also relates to an energy storage and recovery system comprising a compressor, an expansion device, a heat storage and a compressed air tank according to the aforementioned characteristics.

Abstract: The present invention is a compressed-gas energy storage and recovery system and method. The system comprises a compression line (1), an air storage means (1000) and an expansion line (2). According to the invention, the compression line (1) and expansion line (2) comprise a heat storage means (200, 201, 202) including heat storage particles. The expansion line comprises means (600, 601, 602) for injecting and mixing liquid in expansion line (2).

Abstract: The invention relates to a heat storage and recovery system and process comprising at least one cylindrical external wall (51), at least one first volume (30), at least one second volume (31) and at least two fluid injection/withdrawal means. The first (30) and second (31) volumes are separated by at least one heat storage means (20) comprising at least one bed of heat storage particles. Furthermore, the storage means (20) and the first (30) and second (31) volumes extend substantially over the entire axial length of the cylindrical external wall (51). The longitudinal axis of the said cylindrical external wall (51) is horizontal. The invention also relates to a system and to a process for the storage and recovery of energy by compressed gas comprising such a heat storage means.

Abstract: The present invention is a pressure tank comprising a tubular part and two bottoms (5) with the bottoms (5) positioned at the ends of the tubular part. The tubular part comprises a cylindrical wall (1) and a ply of circumferential reinforcing elements (2) wound around cylindrical wall (1). The elastic modulus of the material of cylindrical wall (1) is less than the elastic modulus of the material of the first ply of circumferential reinforcing elements (2). The invention also relates to an energy storage and recovery system comprising a compressor, an expansion device, a heat storage and a compressed air tank according to the aforementioned characteristics.

Abstract: The invention relates to a system and to a method for compressed-gas energy storage and recovery comprising at least a first and at least a second heat exchanger, a cold liquid storage means and a hot liquid storage means, as well as a separation means. The separation means is positioned after at least a first heat exchanger. The system comprises at least one means for feeding the liquid leaving the separation means to the cold liquid storage means.

Abstract: The invention relates to a compressed-air energy storage and production method comprising the following steps: compression of the air by staged compressors, during which cooling of the air after at least one compression step is performed through exchange with a heat transfer fluid, storage of the compressed air and of the hot heat transfer fluid after exchange during compression, staged expansions of the air by power generation turbines, during which heating of the air is performed after at least one step of expansion by said hot heat transfer fluid from said storage. According to the invention, after heating the expanded air and prior to being recycled to the compression step, the heat transfer fluid is cooled by an additional energy recovery loop comprising a pump, an exchanger and a turbine, as well as an additional transfer fluid.

Abstract: The invention relates to a system and to a method for compressed-gas energy storage and recovery comprising at least a first and at least a second heat exchanger, a cold liquid storage means and a hot liquid storage means. The first heat exchangers comprise at least one heat exchanger without direct contact, and at least one second heat exchanger is a direct-contact heat exchanger.

Abstract: The present invention concerns a device and a process for the storage and restitution of heat which comprises at least two concentric heat storage volumes (TES1, TES2, TES3). The walls (2) delimiting these storage volumes are configured in a manner such that the thickness of the wall delimiting the central storage volume is greater than the thickness of the wall delimiting the peripheral storage volume.

Abstract: The invention relates to a system and to a method for compressed-gas energy storage and recovery comprising at least a first and at least a second heat exchanger, a cold liquid storage means and a hot liquid storage means, as well as a separation means. The separation means is positioned after at least a first heat exchanger. The system comprises at least one means for feeding the liquid leaving the separation means to the cold liquid storage means.

Abstract: The invention is a compressed gas energy storage and recovery system and method, of AACAES type. The system and the method according to the invention heats at constant volume stored compressed gas to increase the pressure of the stored compressed gas.

Abstract: The present invention concerns a device and a process for the storage and restitution of heat which comprises at least two concentric heat storage volumes (TES1, TES2, TES3). The walls (2) delimiting these storage volumes are configured in a manner such that the thickness of the wall delimiting the central storage volume is greater than the thickness of the wall delimiting the peripheral storage volume.

Abstract: The invention relates to a container (200) for a heat storage and restitution system, comprising a vessel in which a gas is circulating in order to be cooled or heated. The vessel is limited by a first jacket formed from concrete (203) surrounded by a thermally insulating layer (206), which is itself surrounded by a steel shell (204). The vessel comprises at least two modules (210), each comprising a double wall formed from concrete and a perforated base (205) limiting at least two volumes (217 and 216) which are each capable of containing a fixed bed of particles of a material for storage and restitution of heat (207). The modules are disposed one above the other in a centered manner such that the double wall formed from concrete forms the first jacket formed from concrete (203) and a second jacket formed from concrete (215).

Abstract: The invention is a compressed gas energy storage and recovery system and method, of AACAES type. The system and the method according to the invention heats at constant volume stored compressed gas to increase the pressure of the stored compressed gas.

Abstract: The invention relates to a container (200) for a heat storage and restitution system, comprising a vessel in which a gas is circulating in order to be cooled or heated. The vessel is limited by a first jacket formed from concrete (203) surrounded by a thermally insulating layer (206), which is itself surrounded by a steel shell (204). The vessel comprises at least two modules (210), each comprising a double wall formed from concrete and a perforated base (205) limiting at least two volumes (217 and 216) which are each capable of containing a fixed bed of particles of a material for storage and restitution of heat (207). The modules are disposed one above the other in a centered manner such that the double wall formed from concrete forms the first jacket formed from concrete (203) and a second jacket formed from concrete (215).

Abstract: The invention is an ocean thermal energy conversion method and a system in which a motive fluid having predetermined characteristics is circulated in a closed loop between a cold source in cold deep ocean water and heat sources in warm surface water. The motive fluid is compressed between the cold source and a first primary warm water heat source resulting in the motive fluid being substantially totally vaporized at an outlet of the warm water heat source. The motive fluid is heated downstream from the primary heat source by a secondary heat source. The thermal energy of the heated motive fluid is recovered from a turbine and the motive fluid is condensed in the cold source.

Abstract: The invention is an ocean thermal energy conversion method and a system in which a motive fluid having predetermined characteristics is circulated in a closed loop between a cold source in cold deep ocean water and heat sources in warm surface water. The motive fluid is compressed between the cold source and a first primary warm water heat source resulting in the motive fluid being substantially totally vaporized at an outlet of the warm water heat source. The motive fluid is heated downstream from the primary heat source by a secondary heat source. The thermal energy of the heated motive fluid is recovered from a turbine and the motive fluid is condensed in the cold source.

Abstract: An athletic sock in the form of a standard cotton sports sock includes a longitudinal slit defining opposed edges that can be fastened and unfastened for stretching the athletic sock over athletic protective equipment disposed on the individual's lower leg, and for removal therefrom. Each edge includes a closure member that can be hook and loop fasteners or a zipper to facilitate the stretching of the sock over the athletic protective equipment, and the closure members can brought into mating engagement for securing the sock onto the lower leg and comfortably upon the athletic protective equipment and can be disengaged for sock removal. In addition, the sock can be used as a medical compression sock adjustably securable for obtaining the desired tightness, looseness and comfort of the sock on the individual's lower leg.

Abstract: An athletic sock in the form of a standard cotton sports sock includes a slit defining opposed edges that can be fastened and unfastened for stretching the athletic sock over athletic protective equipment disposed on the individual's lower leg, and for removal therefrom. Each edge has a fastening strip member that is disengaged from the other strip member to facilitate the stretching of the sock over the athletic protective equipment, and the strip members can brought into mating engagement for securing the sock onto the lower leg and comfortably upon the athletic protective equipment. In addition, the sock can be used as a medical compression sock whereby securement of the strip members is adjustable for obtaining the desired tightness, looseness and comfort of the sock on the individual's lower leg.