Abstract: A filling station for filling a liquid cryogenic refrigerant from a supply tank to a receiver tank, the filling station comprising a flash tank between the supply tank and the receiver tank, adapted to de-pressurize the refrigerant that is transferred from the flash tank to the receiver tank, resulting in formation of a liquid cryogenic refrigerant phase and a vapour cryogenic refrigerant phase within the flash tank, and to phase separate the liquid and vapour cryogenic refrigerant phase, and a pump between the flash tank and the receiver tank, adapted for pumping the refrigerant out of the flash tank to the receiver tank, wherein the flash tank has a size and the pump has an outflow of refrigerant such that the ratio between the size of the flash tank and the outflow of refrigerant out of the pump is equal to or more than 1.

Abstract: A filling station for filling a liquid cryogenic refrigerant from a supply tank to a receiver tank, the filling station comprising a flash tank between the supply tank and the receiver tank, adapted to de-pressurize the refrigerant that is transferred from the flash tank to the receiver tank, resulting in formation of a liquid cryogenic refrigerant phase and a vapour cryogenic refrigerant phase within the flash tank, and to phase separate the liquid and vapour cryogenic refrigerant phase, and a pump between the flash tank and the receiver tank, adapted for pumping the refrigerant out of the flash tank to the receiver tank, wherein the flash tank is equipped with a level control unit that is arranged to keep the level of the liquid cryogenic refrigerant phase within the flash tank at a predetermined minimum.

Abstract: A method and an apparatus for mixing of two fluids. The fluid is caused to flow into a mixing chamber (1). The gas is preferably mixed with the fluid before flowing into the mixing chamber. The chamber is vertically oriented and has a mainly cylindrical shape with smooth interior walls. The fluid is led into the chamber via a nozzle (7) in such a way that the fluid flows into the chamber at high velocity. During operation a turbulent gas/liquid phase is formed in the upper part of the chamber and mainly a fluid phase is formed in the lower part of the chamber. The fluid phase with mixed-in gas is drawn off from an outlet (8) arranged at the bottom of the chamber. The mixer could be connected to a transport pipe for fluid.

Abstract: The present invention concerns a method and equipment for dissolving a gas or a gas mixture in a liquid. The liquid is introduced into a chamber (6) via an inlet (2), in connection with which an eddy movement is created in the chamber for mixing the gas and liquid. The gas may be introduced into the liquid before the liquid is introduced into the chamber and/or the gas may be introduced directly into the chamber. The liquid with the dissolved gas is removed via an outlet (4). The gas is dissolved in the liquid by the eddy rotating about a mainly horizontal axis. With the present invention, satisfactory dissolution can be achieved with minimal energy consumption. The present invention is particularly well suited to oxygenating salt water, for example in connection with fish farming.

Abstract: The present invention concerns a method and an apparatus for mixing of a fluid and a gas. The fluid is caused to flow into a mixing chamber (1) where the gas preferably is mixed with the fluid ahead of this. The chamber is vertically oriented and has a mainly cylindrical shape with smooth walls inside. The fluid is led into the chamber via a nozzle (7) in such a way that the fluid flows into the chamber at high velocity. During operation a turbulent gas/liquid phase is formed in the upper part of the chamber and mainly a fluid phase in the lower part of the chamber. The fluid phase with mixed-in gas is drawn off from an outlet (8) arranged at the bottom of the chamber. The mixer could be connected to a transport pipe for fluid, for mixing of gas into this.

Abstract: The present invention concerns a method and equipment for dissolving a gas or a gas mixture in a liquid. The liquid is introduced into a chamber (6) via an inlet (2), in connection with which an eddy movement is created in the chamber for mixing the gas and liquid. The gas may be introduced into the liquid before the liquid is introduced into the chamber and/or the gas may be introduced directly into the chamber. The liquid with the dissolved gas is removed via an outlet (4). The gas is dissolved in the liquid by the eddy rotating about a mainly horizontal axis. With the present invention, satisfactory dissolution can be achieved with minimal energy consumption. The present invention is particularly well suited to oxygenating salt water, for example in connection with fish farming.