KETEP 세계에너지시장정보

A device for liquefied fluids, which comprises a circuit (3) for the fluid to be cooled, which has an upstream end designed to connect to a gaseous fluid source (2) and a downstream end (23) designed to connect to a member (4) for collecting the fluid to be liquefied, the device (1) comprises components of one or more heat exchangers (5, 6, 7, 8, 9, 10, 11, 12, 13) that are in a heat exchange relationship with the circuit (3) used for the fluid to be cooled, the device (1) The chiller comprises at least one primary cooling system (20) in a heat exchange relationship with at least a part of the components of the heat exchanger (5, 6, 7, 8, 9, 10, 11, 12, 13), the first cooling system (20) is a chiller that performs a cooling cycle of circulating gas composed of helium or a mixture containing at least 50% helium, and the chiller comprises the following parts arranged in series in the circulation loop (14): a compression mechanism for compressing the circulating gas (15), At least one heat exchanger for cooling the circulating gas (16,5,6,8,10,12), an expansion mechanism for expanding the circulating gas (17) and at least one heat exchanger for heating the expanded circulating gas (13,12,11,10,9,8,7,6,5), wherein the compression mechanism (15) comprises at least four compression stages in series consisting of components of one or more centrifugal compressors mounted on one or more motors (18) The components drive the rotating shaft (19,190), the expansion mechanism (17) consists of at least three expansion stages in series composed of components of a plurality of centripetal turbines, which consists of at least one heat exchanger for cooling the circulating gases (16,5,6,8,10,12) constructed to cool the circulating gas at the outlet of at least one of these turbines, the device comprises more compression stages than the turbines it includes, each turbine connected to a single corresponding compression cascade by the corresponding motor (18) The same shaft (19) driven so that the mechanical work generated during expansion will be supplied to this compression stage, the other compression stages not coupled to the turbine are mounted only on the rotating shaft (18) driven by a separate corresponding motor (190), and the compression stage coupled to the turbine and the compression stage not coupled to the turbine alternate in series in this circulation loop.