Abstract:
PROBLEM TO BE SOLVED: To provide a gas reliquefaction method with high liquefaction efficiency, for obtaining a large amount of a liquid flow by a lightweight and inexpensive device composition, and for realizing isenthalpic expansion. SOLUTION: A gas flow from a storage container is compressed after heating by heat exchange, and it is expanded and re-liquefied after cooling. Only a partial flow 4 which is one part of a whole gas flow amount 1 and 2 from the storage container is sent to processes after compression V. A partial flow 3 not sent to the processes after compression of the whole gas flow amount 1 and 2 from the storage container is sent to an energy conversion process by a fuel cell or a Stirling engine, a direct vapor generation process, and a vapor process or a gas turbine process, or it is stored. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid pressure machine (1) having at least one displacer chamber (6) in which liquid pressure medium (15), in particular, ion liquid is sealed.SOLUTION: A displacer chamber can be connected to an inlet passage (10) and an outlet passage (11) for the working fluid, and the liquid column of the liquid pressure medium (15) is interposed as the pressure transmitting medium between the working fluid in the displacer chamber and a displacer piston mechanism (17). In order to provide the fluid pressure machine having high displacement capacity in a slight structural occupied space, the displacer chamber (6) is provided inside a cylinder drum (5) rotating around the axial center (4), and the axial center of the displacer chamber is arranged toward the direction crossing the axial center (4) of the cylinder drum (5). Preferably, the displacer chamber (6) is provided within the cylinder drum (5) as a radial bore in the direction orthogonal to the axial center (4) of the cylinder drum (5).
Abstract:
PROBLEM TO BE SOLVED: To solve disadvantages by improving a method and apparatus for compressing a gaseous medium.SOLUTION: Prior to compression V1, V2, medium to be compressed is heated E1, E2 until at least water condensation/separation during a compression step is prevented, and compressed media 5, 8 are subjected to water separation D2, D3.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for compressing a gaseous medium such as, especially, hydrogen or natural gas, while solving well-known disadvantages by improving a method of compressing the gaseous medium through single or multiple stages by means of at least one piston filled with a liquid by enabling the gaseous medium to contain water to be completely saturated.SOLUTION: An ion liquid which is not infiltrated with water contained in a medium to be compressed and/or a liquid which has a lower steam pressure and is not infiltrated with water contained in a medium to be compressed is used as a liquid, and compressed media (2, 5, 8) are set in water separators (D1, D2, D3, ...).
Abstract:
PROBLEM TO BE SOLVED: To provide a mobile type compressed gas distribution device transportable by using a transporter.SOLUTION: The mobile type compressed gas distribution device is composed of: a drive unit for driving the transporter for the compressed gas distribution device, at least one storage vessel(s) suitable for storage of a compressed medium; at least one conduit through which one or a plurality of storage vessels are connected with an external storage vessel to be filled with the compressed gas by means of the compressed gas distribution device; and at least one compressor. In this embodiment of invention, one or at least one of the compressors is connected with the drive unit for the transporter effectively in such a manner as able to be driven by the drive unit.
Abstract:
PROBLEM TO BE SOLVED: To provide a multistage piston compressor, in which compressor stages are operated to be independent of each other, and wear is reduced and energy efficiency is improved.SOLUTION: Each piston 3A, 3B, 3C, 3D of the respective compressor stages A, B, C, D is connected with respective liquid columns 9A, 9B, 9C, 9D of an incompressible liquid in compressor cylinders 2A, 2B, 2C, 2D. The liquid column can be connected with an outlet channel 15 so that it converts a piston stroke motion of the piston into a motion of a compressor piston 10A, 10B, 10C, 10D arranged in the compressor cylinder and can longitudinally shift and it changes a reciprocating stroke VH of the compressor piston.
Abstract:
The invention relates to a method for performing a pressure and impermeability test before filling up a storage container (5) with a gaseous pressurised medium, particularly hydrogen, according to which method a gas buffer store (1), in which the medium to be used for filling is stored, is connected via a first valve (28) to a pipeline section (29) delimiting a pipeline volume, which section is connected via a second valve (31) and a subsequent filling line (34) to the storage container (5), wherein before filling, if the first valve (28) is open and the second valve (31) is closed, the pipeline volume is pressurised to a predefined initial pressure using medium and/or hydrogen from the gas buffer store (1), then the first valve (28) is closed and the second valve (31) is opened, and therefore only medium and/or hydrogen found in the pipeline volume presses against a fuel valve (53) of the storage container (5) and flows into the storage container (5).
Abstract:
The invention relates to a storage device (1) for storing a gas (20), in particular for storing gaseous hydrogen, comprising a first chamber (30) for receiving the gas (20) and a locking device (32) for closing and opening a flow path (33) connected to the first chamber (30). The storage device (1) according to the invention comprises an adjustment unit (40) for volume change of the first chamber (30). The invention further relates to a gas storage unit (100) comprising the storage device (1) according to the invention and to a method for the at least partial filling or emptying of the gas storage unit (100).
Abstract:
The invention relates to a method for supplying natural gas, especially natural gas used for filling up vehicles. According to the invention, at least one constituent which reduces the freezing point and/or stabilises the ignition pressure is mixed with the natural gas. Methanol, ethanol or a mixture of methanol and ethanol is preferably mixed with the natural gas. The content of the constituents added to the natural gas is between 1 and 1000 ppm, especially between 5 and 500 ppm.
Abstract:
A description is given of a current lead-through device designed for pressures and temperatures of several thousand bar or kelvins. The current lead-through device according to the invention comprises a) a flange (1), b) a bell (2), connected to the flange (1), c) a pressure-transmitting medium (4), arranged inside the bell (2), d) a first current lead-through (5), leading through the flange (1) and designed for temperatures of at least 400 K, preferably of at least 3000 K, e) a second current lead-through (7), leading through the side of the bell (2) opposite from the flange (1) and designed for pressures of at least 500 bar, preferably of at least 3000 bar, and f) a line (6) connecting the two current lead-throughs (5, 7).