Abstract: A detection device, includes: a sensor for detecting a fluid of interest receiving the fluid. The sensor delivers a concentration of the fluid of interest, and a wireless communication module is configured to transmit said concentration of the fluid of interest. An assembly is provided with several devices and a installation with the devices arranged within a region.

Abstract: The hub and this detector are configured to be able to pair and synchronize with one another. This hub and the detector each include a computer program allowing them to compute intervals during which the detector can send to the hub, by a radio communication module, collection data obtained by a sensor and representing the environment of this sensor. The hub only activates its radio communication module during these intervals.

Abstract: Method for hydrogen liquefaction comprising at least one precooling step, wherein a hydrogen feed flow is cooled by a first refrigerant, a cooling step, wherein the hydrogen feed flow is cooled by a second refrigerant, and a step of expanding the hydrogen feed flow. Each of the first and second refrigerants is successively subjected to at least one compression and to at least one expansion in order to cool it, and a liquid phase of the first refrigerant cools the second refrigerant between at least three stages of said compression so that the second refrigerant does not exceed a temperature of 150 K, optionally 113 K, during said compression of the second refrigerant.

Abstract: A method is provided for estimating at least one combustion characteristic of a fuel gas belonging to a family of fuel gases, where the at least one characteristic includes at least one of a Wobbe index or a higher heating value. The method includes measuring at least two flow properties of the fuel gas and measuring a dihydrogen content XH2 contained in the fuel gas. The method also includes estimating the at least one characteristic ? GN H ? ? 2 using an empirical affine relationship of ? GN H ? ? 2 = ? + ? · Y + ? · X H 2 . Here, ?, ?, and ? are coefficients predetermined for the family of fuel gases, and Y is a variable representative of physical properties of the fuel gas prepared from the measurements of the at least two flow properties of the fuel gas.

Abstract: A method for calculating in real time the methane number of a liquefied natural gas contained in a tank, in particular in an on-board tank.

Abstract: Some embodiments are directed to a module for depressurisation and storage of a portion of a gas layer coming from at least one cryogenic tank. Some other embodiments are directed to a system using such a module.

Abstract: Some embodiments of the presently disclosed subject matter relate to a method and system for the real-time calculation of the amount of residual chemical energy in a non-refrigerated, pressurised tank containing liquefied natural gas, without a composition of the liquefied natural gas having to be determined.

Abstract: An end-fired melting furnace and a method of melting raw materials by an end-fired melting furnace are provided, where the furnace includes a melting tank, a melting chamber, first and second ports, at least one burner, and at least one auxiliary fuel injector arranged in the end-fired melting furnace in a roof or in first and second side walls so that the at least one auxiliary fuel injector introduces a fraction X2 of auxiliary fuel, in a direction of re-circulating combustion products, without additional oxidiser, into the re-circulating combustion products in a direction of a flow of the re-circulating combustion products, and with a chosen velocity such that the fraction X2 of auxiliary fuel mixes with the re-circulating combustion products before being combusted by oxidiser entering the furnace.

Abstract: This invention relates to a method and a system for calculating in real-time the duration of autonomy of a non-refrigerated tank containing natural gas comprising a liquefied natural gas (LNG) layer and a gaseous natural gas (GNG) layer. This invention also relates to a system for calculating, in real time, according to the method of the invention, the duration of autonomy of a non-refrigerated tank, as well as a vehicle comprising an NG tank and a system according to the invention.

Abstract: The invention relates to a device (100) for the odorization of a gas circulating in a pipeline (200), comprising: a tank (105) for a liquid odorizing compound; a means for detecting (140) differences in pressure between the pipeline (200) and the tank; a means (135) for pressurizing the compound in the tank according to the pressure difference; a microperforated membrane (110) acting as an interface between the tank and an inner volume (115) of the pipeline; and a means (120) for vibrating the microperforated membrane in order to spray the liquid odorizing compound, when it comes into contact with the membrane, into the pipeline.

Abstract: An intervention method for acting on a wall of a fluid pipeline using a tool includes moving the tool inside the pipeline until a pipe segment of the tool is positioned facing a zone of the wall of the pipeline. The method also includes creating sealing upstream and downstream from the zone using first and second seals of the tool so as to seal off an outer portion of a segment of the pipeline around the zone. The method further includes acting on the zone of the wall. The sealing by the first and second seals occurs in two portions of the pipeline so as to define a sealing lock between the two portions of the pipeline. The tool further includes an adjustable propulsion system configured to make use of movement of the fluid in order to move the tool.

Abstract: An intervention method for acting on a wall of a fluid pipeline using a tool includes moving the tool inside the pipeline until a pipe segment of the tool is positioned facing a zone of the wall of the pipeline. The method also includes creating sealing upstream and downstream from the zone using first and second seals of the tool so as to seal off an outer portion of a segment of the pipeline around the zone. The method further includes acting on the zone of the wall. The sealing by the first and second seals occurs in two portions of the pipeline so as to define a sealing lock between the two portions of the pipeline. The first seal is in two portions, and the second seal is in two portions.

Abstract: An electronic device includes a body having a threaded portion configured to co-operate with a threaded portion of a duct in a sleeve in order to move the device into a final position when the device is turned. The electronic device also includes a hole punch configured to form a through orifice in a pipe while the device is being turned and to enable the device to be inserted into the final position. The electronic device further includes an electronic module configured to be in contact with a fluid passing through the pipe when the device is in the final position. In addition, the electronic device includes at least one electrical connection connected to the electronic module and passing through the body leading to a top face of the body. The body and the at least one electrical connection form a plug of the duct in the sleeve.

Abstract: A method of estimating a characteristic (Qn?, Q1?) of a load of liquefied natural gas being transported by a tanker at any point on a route (401, P; 501, 502, 503), the method being characterized in that the estimation is made by integrating, over the route (410, 411, 412, 420; 510, 511, 512) from a reference point (400, P; 500) at which said characteristic is known (Qn, Ql), a relationship associating the instantaneous transformation of the load with instantaneous navigation conditions.

Abstract: Some embodiments of the presently disclosed subject matter relate to a method and system for the real-time calculation of the amount of residual chemical energy in a non-refrigerated, pressurised tank containing liquefied natural gas, without a composition of the liquefied natural gas having to be determined.

Abstract: A system for generating low-power energy includes a fuel cell supplied by a gas network and a rechargeable energy storage system. An energy generation method and an energy management method implementing such an energy generation system are described.

Abstract: The invention relates to an intervention method for acting on the wall of a fluid pipeline by using a tool comprising a pipe segment and at least first means for creating sealing and second means for creating sealing, the method comprising a step of moving the tool inside the pipeline until the pipe segment is positioned facing a zone of the wall of said pipeline, the method further comprising a step of creating sealing upstream and downstream from said zone respectively by using the first and second means for creating sealing so as to seal off an outer portion of a segment of the pipeline around said zone, followed by a step of acting on said zone of the wall.

Abstract: The invention relates to a system and a method for injecting liquid odorant into a natural gas pipe, the system comprising: a tank containing the odorant in liquid form; a high-pressure pump connected to the tank; a common injection manifold fed with liquid odorant by the high-pressure pump; a plurality of odorant injectors fed with liquid odorant under pressure by the common injection manifold for the purpose of injecting the odorant into the gas pipe so as to cause it to be atomized in the gas pipe; and an electronic injection computer for controlling the injectors and the high-pressure pump.

Abstract: An electronic device includes a body having a threaded portion configured to co-operate with a threaded portion of a duct in a sleeve in order to move the device into a final position when the device is turned. The electronic device also includes a hole punch configured to form a through orifice in a pipe while the device is being turned and to enable the device to be inserted into the final position. The electronic device further includes an electronic module configured to be in contact with a fluid passing through the pipe when the device is in the final position. In addition, the electronic device includes at least one electrical connection connected to the electronic module and passing through the body leading to a top face of the body. The body and the at least one electrical connection form a plug of the duct in the sleeve.

Abstract: This invention relates to a method and a system for calculating in real-time the duration of autonomy of a non-refrigerated tank containing natural gas comprising a liquefied natural gas (LNG) layer and a gaseous natural gas (GNG) layer. This invention also relates to a system for calculating, in real time, according to the method of the invention, the duration of autonomy of a non-refrigerated tank, as well as a vehicle comprising an NG tank and a system according to the invention.