Abstract: A method for producing a connection, between attachment ends of two components that are to be connected, by means of two connection flanges, each of which is provided at one attachment end, wherein a sealable cavity is formed between those sides of the two connection flanges that are to face each other, wherein a closable and, if necessary, openable channel is provided between the cavity and a surrounding environment, and a negative pressure is generated in the cavity and the channel is closed, wherein a trigger mechanism is provided which is configured to open the channel in an automated manner upon the occurrence of a trigger criterion, and also to a corresponding connection device and to the use thereof.

Abstract: A coupling device (1) for a cryogenic refueling arrangement (3), having a valve (9), which is arranged between an inlet (5) and an outlet (7) of the coupling device (1), a primary drive mechanism (11) for opening and closing the valve (9), and a secondary drive mechanism (13) separate from the primary drive mechanism (11), wherein the primary drive mechanism (11) has a switch (10) which is connected upstream of the valve (9), and wherein the secondary drive mechanism (13) opens the switch (10) in order to close the valve (9) as soon as a pulling force (F) acting on the coupling device (1) exceeds a predetermined value.

Abstract: A coupling device for a cryogenic refueling arrangement, having a main valve; a venting valve which is connected parallel to the main valve and which serves for venting a volume, which is provided downstream of the main valve and the venting valve, in order to prepare the coupling device for a refueling operation; a housing which encloses a further volume in which the main valve and the venting valve are arranged; and a shut-off valve which is provided on the housing and by means of which the volume enclosed by the housing is accessible.

Abstract: A cryogenic tank-filling arrangement having a coupling device and a receptacle, wherein the coupling device and the receptacle are designed to be complementary to each other, wherein the cryogenic tank-filling arrangement can be brought with the aid of a pressure change in the intermediate space from an unlocked state—in which the coupling device and the receptacle are accommodated in each other at least in sections, so that the coupling device and the receptacle enclose an intermediate space which is closed off relative to an environment of the cryogenic tank-filling arrangement and which is arranged between an end face of the coupling device and an end face of the receptacle—into a locked state, in which the end face of the coupling device is pressed against the end face of the receptacle due to the pressure change.

Abstract: A method for operating a cryogenic refueling arrangement comprising a coupling device and a receiver socket, wherein the method comprises the following steps: a) coupling the coupling device to the receiver socket such that the coupling device and the receiver socket are locked to one another in a first position, b) applying a negative pressure to the coupling device and/or the receiver socket, c) unlocking the coupling device and the receiver socket so that the negative pressure causes the coupling device to move, in a direction toward the receiver socket, from the first position into a second position, which is different from the first position, d) locking the coupling device and the receiver socket in the second position, and e) starting a refueling process.

Abstract: The invention relates to a fuel cell system comprising an outer container, defining an enclosed chamber. Inside the enclosed chamber are provided: a storage vessel for storing a cryogenically liquefied working fluid, a gasification device coupled to the storage vessel, a fuel cell arrangement coupled to the gasification device, and a control unit configured to control flow between the components within the enclosed chamber. A power cable is provided which is coupled at one end to the fuel cell arrangement and extending through an exterior wall of the outer chamber such that a second end of the cable extends outside the chamber. The enclosed chamber is substantially sealed such that in use, leaking of the working fluid is substantially prevented.

Abstract: The present invention relates to a cryogenic vessel (300a, 300b) having an inner container (301), an outer container (302), an intermediate space (303) between the inner container (301) and the outer container (302) which can be evacuated, and having at least one fluid distribution container (200), which has an internal volume which extends proceeding from one wall of the inner container (301) into the intermediate space (303), is arranged at least partially within the intermediate space (303) and is fluidically connected to the inner container (301), wherein the internal volume of the fluid distribution container (200) is delimited by a wall which has openings (211, 212, 213) that are designed for the connection of one line (311, 312, 313) each or are each connected with one such line (311, 312, 313). The wall (121, 221) has a convex section (101, 201), wherein a wall thickness of the wall at at least one point is less than 90% of a wall thickness of the inner container (301).

Abstract: The present invention relates to a cryogenic vessel (300a, 300b) having an inner container (301), an outer container (302), an intermediate space (303) between the inner container (301) and the outer container (302) which can be evacuated, and having at least one fluid distribution container (200), which has an internal volume which extends proceeding from one wall of the inner container (301) into the intermediate space (303), is arranged at least partially within the intermediate space (303) and is fluidically connected to the inner container (301), wherein the internal volume of the fluid distribution container (200) is delimited by a wall which has openings (211, 212, 213) that are designed for the connection of one line (311, 312, 313) each or are each connected with one such line (311, 312, 313). The wall (121, 221) has a convex section (101, 201), wherein a wall thickness of the wall at at least one point is less than 90% of a wall thickness of the inner container (301).

Abstract: The invention relates to a fuel cell system comprising an outer container, defining an enclosed chamber. Inside the enclosed chamber are provided: a storage vessel for storing a cryogenically liquefied working fluid, a gasification device coupled to the storage vessel, a fuel cell arrangement coupled to the gasification device, and a control unit configured to control flow between the components within the enclosed chamber. A power cable is provided which is coupled at one end to the fuel cell arrangement and extending through an exterior wall of the outer chamber such that a second end of the cable extends outside the chamber. The enclosed chamber is substantially sealed such that in use, leaking of the working fluid is substantially prevented.

Abstract: A heat transfer tube (2), in particular a finned tube, for an air-heated evaporator (1) for heating and/or evaporating cryogenic fluids, having a tube section (8) and a coating (15) which is provided on the outer side of the tube section (8) and has a hydrophilic portion (16) and a hydrophobic portion (17), wherein the hydrophilic portion (16) forms, in the coating (15), seed points (18), which are peripherally enclosed by the hydrophobic portion (16), for condensing air moisture thereon and wherein the seed points (18) have a size of less than 100 nm.

Abstract: A storage container for cryogenic liquids comprising an inner container which encloses a volume for receiving a fluid medium, an outer container which encloses a volume in which the inner container is arranged, with the result that an interspace is formed between the inner container and the outer container, and wherein the outer container has at least one outerfoot by means of which the storage container can be supported on an underlying surface, wherein the at least one outerfoot takes the form of a hollow body, and wherein the inner container has at least one inner foot for supporting the inner container that projects into the interior of the at least one outer foot.