26 results about "Joule effect" patented technology

The application provides a micron-thick graphite film and a growth method thereof. A substance with high carbon content is dispersed in an organic solvent and coated on a metal foil, and after drying, a carbon film / metal foil is obtained; or the substance with high carbon content is made into a sheet and placed on a metal foil, and a carbon film / metal foil is obtained; in a protective atmosphere, a current is applied to the sample, the carbon film / metal foil is heated by using the Joule effect of the current, and the power supply is stopped, so that a micron-thick graphite film is obtained on the surface of the metal foil. The graphite film is prepared by using the dissolution-precipitation of carbon in the metal substrate in the process of high-temperature-low-temperature temperature change. Since the metal substrate has an epitaxial relationship with the graphite lattice, the graphite film with AB stacking can be directly precipitated, so that the graphitization of carbon can be realized at a lower temperature. The reaction system is radiated and heated by using the Joule heating characteristic of the current, the heating efficiency is effectively improved, the temperature is raised from room temperature to the growth temperature in a few seconds, the influence of the side reaction is reduced, and the raw material utilization rate is improved.

The invention relates to the technical field of massage, in particular to a bionic hand pinching massager pillow which comprises a pillow and a massage pillow body composed of bionic massage heads rotationally arranged on the pillow, a driving shaft is fixed to one side of each bionic massage head, and a functional mechanism used in cooperation with the bionic massage heads is arranged in the pillow; the functional mechanism is composed of a liquid storage tank, a heating assembly, a transmission structure and a conveying assembly, and the liquid storage tank is located above the heating assembly; the heating assembly comprises a rotating disc, and a plurality of annularly-distributed mounting grooves are formed in the rotating disc. The eddy current and Joule effect are utilized to heat the heat conduction block, non-contact heating is achieved, direct heating of an electric heating wire or open fire is avoided, the fire risk is reduced, meanwhile, heat energy transfer loss is reduced, the transmission sleeve is matched to drive the stirring shaft to rotate, liquid thermal stratification is broken, it is ensured that the temperature in the liquid storage tank is uniform, and local overheating or cooling is avoided; the heating consistency and safety are improved, and the heating efficiency is improved.

The invention discloses a heating system and a heating method for simulating a water loss accident, and belongs to the technical field of nuclear fuel circulation and irradiation effect research, the heating system comprises a fuel rod, the fuel rod comprises a fuel cladding and a fuel core body, the fuel rod is arranged in a quartz tube sample cavity, the whole fuel rod is arranged in a reaction furnace body, and an infrared temperature detector monitors the temperature in real time through a peep window; and data is fed back to the processing box to dynamically adjust power output. The fuel rod is used as a resistance material, low-voltage alternating current is applied, self-heating is achieved through the Joule effect, heat transfer lag of a traditional heating mode is eliminated, the infrared temperature detector monitors the temperature in a non-contact mode through the squint window and feeds back the temperature to the processing box in real time to dynamically adjust power output, and closed-loop control is formed. And the ultrafast temperature rise requirement under the water loss accident working condition is accurately simulated.

The invention relates to the technical field of bionic silica gel electronic skin, in particular to bionic silica gel electronic skin based on graphene heating and a preparation method of the bionic silica gel electronic skin. The device is composed of a graphene-polydimethylsiloxane composite functional film, and a micro-dome array and an isolation channel are constructed in the device. The micro-dome is used as a sensing unit for enriching graphene, and the isolation channel realizes pixelated electrical isolation of adjacent units. A patterned electrode grid is prepared on the surface of the functional film so as to form an independent sensing-heating pixel unit. The single pixel unit can work in a pressure sensing mode, a temperature sensing mode or a regionalized heating mode in a time-sharing mode through the piezoresistance, the negative temperature coefficient and the Joule effect of graphene and time-sharing multiplexing control of an external circuit, and sensing-heating integration is achieved. The problems of thermal crosstalk, response hysteresis and high energy consumption of a traditional multi-layer structure are solved, and the multi-layer structure has the advantages of being simple in structure, good in flexibility and low in power consumption and is suitable for the fields of robots, intelligent prostheses and the like.

A system (100) for determination of a quantity of emissions of carbon dioxide resulting from the heating of an electrical conductor of an electrical cable by the Joule effect includes an electrical cable (10) having at least one electrical conductor (12) and at least one layer of material surrounding the at least one conductor, and a measurement unit (110) associated with the electrical cable. The measurement unit has at least one temperature sensor (20) and a device (112) for measurement of the electrical intensity Icond of an electrical current circulating in the electrical conductor. A calculation unit (120) is configured to communicate information with the measurement unit, the calculation unit being configured to determine the conductor temperature Θcond by means of the at least one temperature sensor. The calculation unit is further configured to determine a quantity of emissions of carbon dioxide resulting from the heating of the electrical conductor by the Joule effect as a function of the conductor temperature Θcond and the electrical intensity Icond in the electrical conductor.

The present invention relates to an ohmic heating device (1) configured for leavening and / or curing a fermented food product (PAL), the device comprising:-a heating chamber (2) configured to contain a fermented food product,-at least two electrodes, comprising a first electrode (3A) and a second electrode (3B) located within said heating chamber, configured to be in contact with a fermented food product,-a power source (4), and at least two electrodes (3A, 3B) configured to generate a voltage difference between the at least two electrodes (3A, 3B) and to form an electric current through the fermented food product between the two electrodes to heat the fermented food product by the Joule effect.

An apparatus for producing inner liners for packets of aerosol-generating articles or smoking articles comprises a heating unit (22, 23, 24) positioned downstream of a feeder (11, 11') of a continuous sheet (13, 13') comprising a metal layer (14) and a coating layer (15) with a flavor, an embossing and punching unit (10) configured to emboss and punch the continuous sheet (13, 13') to form individual inner liners (5). The heating unit ((22, 23, 24) comprises an induction heating unit (24) comprising: an alternate voltage generator (25), first electrodes (26) connected to a first terminal (27) of the alternate voltage generator (25), second electrodes (28) connected to a second terminal (29) of the alternate voltage generator (25). The first electrodes (26) and the second electrodes (28) are arranged side by side on one side of a lying plane of the continuous sheet (13, 13'). The induction heating unit (24) is configured to generate an oscillating electrical field (E) inducing currents in the metal layer (14) and heating the metal layer (14) by Joule effect, wherein the generated heat heats up the coating layer (15).

The invention discloses a concrete member with an electric heating characteristic and a preparation method thereof. The concrete member comprises concrete and an electrode mesh arranged in the concrete, wherein the concrete is prepared from sand, fly ash, mineral powder, carbon fibers and an alkali activator through alkali excitation reaction, molding, curing and water absorption; the surface of the concrete is coated with resin to form a sealing structure; the electrode meshes are pre-buried in the concrete before the concrete is formed, and the plurality of electrode meshes are arranged at intervals; every two adjacent electrode meshes serve as a unit, and a plurality of units are connected through wires to form a parallel circuit. The prepared carbon fiber-alkali activated concrete converts electric energy into heat energy through the Joule effect, a traditional heating mode can be replaced, consumption of fossil fuel is reduced, and the carbon fiber-alkali activated concrete has great application potential in near-zero-energy-consumption buildings.

The invention relates to a system for determining (100) the quantity of carbon dioxide emissions resulting from the heating of an electrical conductor in an electrical cable by Joule effect, said system comprising: - an electrical cable (10) comprising at least one electrical conductor (12) and at least one layer of material surrounding said at least one conductor, - a measuring unit (110) associated with the electrical cable, said measuring unit comprising at least one temperature sensor (20) and a device for measuring the electrical intensity Icond (112) of an electric current flowing in the electrical conductor, - a computing unit (120) configured to communicate information with the measuring unit, the computing unit being configured to determine the conductor temperature Θcond by means of said at least one temperature sensor,said calculation unit being further configured to determine the quantity of carbon dioxide emissions resulting from the heating of the electrical conductor by Joule effect as a function of the conductor temperature Θcond and the electrical current Icond in the electrical conductor. Figure for the abbreviation: Figure 1,

This invention relates to the field of electrochemical material preparation technology, specifically disclosing an apparatus for large-scale manufacturing of high-performance water electrolysis electrodes using the Joule heating effect. The apparatus includes a frame body, an unwinding roller, a winding roller, and a conductive carrier conveyor belt transporting the materials. A spraying unit, a pre-drying unit, and a Joule heating unit are sequentially arranged along the conveyor belt's movement direction. The Joule heating unit includes a first conductive roller and a second conductive roller electrically connected to the positive and negative terminals of a DC power supply, respectively. When the second conductive roller contacts the moving conductive carrier conveyor belt, current flows through the conveyor belt, generating Joule heat and inducing a thermochemical reaction in the precursor loaded on its surface. This apparatus achieves integrated, streamlined operation from spraying and pre-drying to high-temperature reaction. Simultaneously, the direct, instantaneous, and localized heating method based on the Joule effect significantly reduces heat loss and promotes in-situ reaction and firm bonding of the catalyst precursor on the conductive carrier surface, effectively improving the electrode's catalytic activity and long-term stability.

The application belongs to the field of infrared detector manufacturing, and specifically discloses a kind of ceramic package pulse current activation methods of infrared detector. The method comprises: providing a ceramic package infrared detector assembly, the two ends of the sheet-shaped non-evaporable getter in the assembly are fixed on two first type conductive columns;Electricity contact probe is contacted with the first type conductive column;Preheating current is applied to the getter through the first type conductive column, then high-frequency pulse current is applied to activate, so that the getter body reaches the activation temperature due to Joule effect;During the pulse current activation process or after activation, the detector chip is subjected to low-temperature thermal stabilization treatment. The application realizes the rapid local activation of the getter by pulse current, shortens the process time, reduces the energy consumption, avoids thermal damage, and improves the performance of the detector, and is especially suitable for ceramic packaged infrared detectors.

The application relates to a magnetic memory, comprising: an MTJ device, comprising a first electrode, an MTJ layer and an AFM layer, the MTJ layer being arranged between the first electrode and the AFM layer; a second electrode, arranged on a side of the AFM layer away from the MTJ layer; and a heater, arranged on a side of the second electrode away from the AFM layer, used for heating the AFM layer to demagnetize the AFM layer; wherein in a write mode, a write current flows from one end of the second electrode to the other end. The magnetic memory places the heater on the side of the second electrode away from the AFM layer to heat the AFM layer, which can effectively demagnetize the AFM layer completely; after demagnetization, the magnetization direction of the AFM layer is determined by the SOT effect generated by the write current passing through the bottom electrode, and then the exchange bias between the AFM layer and the free layer is flipped, so that the magnetic moment of the free layer is flipped. The demagnetization of the AFM layer adopts the heat generated by the separate heater, and does not need to demagnetize the AFM layer through the Joule effect of the increased write current, so that the write power consumption of the storage chip is effectively reduced.

A safety system for a battery-powered fog generator is described, designed to operate on a vaporization coil (2) of a fogging fluid; the safety system includes: a fuse wire (1), each placed at one end of the coil (2), suitable for heating both due to a Joule effect and through heat coming from the coil (2) by thermal conduction, the fusible wire (1) being therefore designed to melt when its temperature exceeds a melting threshold value, interrupting the power supply from the battery to the coil (2); a sensor (6) designed to detect the temperature of the coil (2) when current flows in it; and a control unit (7) operatively connected to the sensor (6).

There is provided a two-melt chemical synthesis steps process for the preparation of a lithium metal phosphate (LiMPO4) cathode material, wherein the metal (M) is iron and / or manganese. The process comprises: a first step of mixing a lithium source and a phosphorus source in a first melt reactive pool at a temperature of about 650°C or more to form liquid LiPO3 (LiPO3(l)); and a second step of contacting the LiPO3(l) with a 'metal-oxygen' source ('M-O' source) to form LiMPO4 in a second melt reactive pool held at a temperature above the melting point of LiMPO4. Metallic iron and / or metallic manganese may be used as sole metal sources and heat from the Joule effect produced may constitute a further heating means for the pool.

Improved reverse-winding induction motors are presented that can achieve performance that was not previously possible and that teach new ways to configure and utilize the reverse-winding class of motors. Embodiments can present reverse-winding induction motor (1) designs that have at least one drive stator-coordinated reverse magnetic system (8), at least IE4-total motor-efficiency reverse magnetic stator system (9), at least one rated-full load slip-minimized reverse magnetic stator system (10), at least one exorbitantly-sized, reverse magnetic effect-boosting reverse magnetic stator system (24), and even at least one nearly joule effect breakdown current density reverse magnetic stator system (26). New factors and new relationships to configure reverse stator capacitor(s) are disclosed that can achieve improvements in efficiency, slip, and power factor beyond what was previously understood as the limit of performance for a reverse-winding class of induction motor.

The application provides a port protection method and device of an electronic device and the electronic device. The method comprises the following steps: determining a first electrical parameter at a port of the electronic device; acquiring temperature detection information of the corresponding port when the first electrical parameter at the port is less than a first preset threshold; determining to generate early warning information that foreign matter exists in the port when the temperature detection information indicates that a second electrical parameter at the port is in a second preset threshold; and determining that the temperature detection information indicates that the value of the second electrical parameter at the port is greater than a high threshold of the second preset threshold interval and canceling the early warning information when feedback information of a user is received within a preset time of generating the early warning information. In this way, timely early warning can be achieved to inform the user that the port is abnormal and to be handled in time, foreign matter can be prevented from rapidly heating due to the Joule effect under continuous power supply, and serious consequences such as smoking or even fire can be avoided, and active early warning is achieved.

A heated subsea pipe and process for transporting fluids, includes a plurality of pipe sections each having a transport tube for receiving the fluids, an electrically insulating inner layer arranged around the transport tube, a sealing tube made of electrically conductive material arranged around the electrically insulating inner layer, a thermally insulating outer layer arranged around the sealing tube. The transport tube is electrically connected to the sealing tube at each of the two ends of the pipe. The pipe includes two electrical cables connected to an electric generator and, to the transport tube and to the sealing tube of the pipe at a point situated between the two ends of the pipe to produce two parallel electrical circuits each traversed by an electric current for heating the transport tube of the pipe by Joule effect.

The invention provides a graded gasification and reforming recovery method and device for retired fan blades, and belongs to the technical field of solid waste decomposition and recovery. The method comprises the following steps: raising the temperature of retired fan blade particles to 700-900 DEG C in an inert atmosphere, and introducing water vapor for pyrolysis to obtain pyrolysis gas; the pyrolysis gas is introduced into a porous medium loaded with an active metal catalyst, periodic pulse Joule heating is carried out, the average temperature in the process is 900-1200 DEG C, and hydrogen-rich synthesis gas is obtained; and cooling and recovering the glass fibers in an inert atmosphere after the pyrolysis is finished. The oxidation reaction can be prevented by heating in the inert atmosphere, and the glass fiber structure is protected; the resin matrix is completely decomposed by introducing water vapor, so that the glass fiber with high surface cleanliness and high tensile strength retention rate is obtained; then rapid multi-stage high temperature is achieved through the Joule effect, and the first-stage pyrolysis product is directionally converted into the hydrogen-rich synthesis gas. The problems that an existing retired fan blade is high in recovery cost and large in environmental risk are solved.

The application discloses a CT-X ray tube bearing life test device, which comprises a test table and a tool seat, the tool seat is connected with a vacuum quartz glass cover, a test cavity is formed in the vacuum quartz glass cover, the test cavity is provided with a bearing to be tested, a rotor copper sleeve used for cooperating with the bearing to be tested and a target disc used for cooperating with the rotor copper sleeve, the tool seat is provided with a heating structure used for heating the target disc through the Joule effect and a driving structure used for driving the bearing to be tested to rotate through the electromagnetic induction principle to simulate the actual operation condition of the bearing, the test table is provided with a vacuum pumping structure used for pumping out the air in the test cavity to simulate the vacuum environment when the bearing is actually operated, and the tool seat is provided with a detection structure used for monitoring the rotating speed of the bearing and the temperature of the target disc. The application solves the problem that the prior art lacks a special life test device capable of simulating the vacuum, high temperature and electromagnetic driving rotating condition of the actual work of the CT-X ray tube bearing.

An ohmic system for the heat treatment of a food product comprising: - a first conduit (11 ) for the passage of the food product; - at least a first and a second electrode (21, 22) intended to allow the passage of an electric current into the food product transiting in the first conduit (11) in order to bring about the heat treatment of the food product by the Joule effect; - a rotor (3) rotatable around a rotation axis (300), placed at least partly inside the first conduit (11) and comprising a plurality of blades (30) intended to move the food product; said first conduit (11) comprising an inner surface (110) which surrounds the rotation axis (300); said plurality of blades (30) extending away from the axis (300) towards the inner surface (110). A first fictitious section (41), lying orthogonally to the rotation axis (300), intersects both the first and the second blade (310, 320); a second fictitious section (42), lying orthogonally to the rotation axis (300) intersects the second blade (320) without intersecting the first blade (310).

The invention discloses a Joule heat-assisted continuous fiber high-speed additive manufacturing device and method, and relates to the field of continuous fiber composite 3D printing, the Joule heat-assisted continuous fiber high-speed additive manufacturing device comprises a mounting base, a wire feeding mechanism, a heat conduction mechanism and a Joule heat mechanism are arranged on the mounting base, a wire inlet is formed in the top end of the mounting base, and a prepreg wire enters from the wire inlet; sequentially passing through a wire feeding mechanism and an electrode tube, and after being coupled, heated and fused by a Joule heat mechanism and a heat conduction mechanism, depositing and forming at a nozzle opening of a printing nozzle; the Joule heat mechanism comprises a current controller connected with the electrode, and the current controller regulates and controls the magnitude of current passing through the prepreg wire so as to control the temperature of the prepreg wire in the printing process; according to the method, the thermoplastic composite material matrix is fused by utilizing the Joule effect of the conductive fibers, so that the rapid forming of the continuous fiber reinforced composite material and the efficient and accurate temperature regulation and control are realized.

This invention provides a Carnot battery system and its operation method with tiered temperature matching for production, storage, and utilization, relating to the field of molten salt energy storage technology. The system includes a charging section, an energy storage section, and an energy dissipation section. The energy storage section includes a tiered heating unit, a tiered thermal storage unit, and a tiered heat utilization unit. The tiered heating unit is composed of a medium-temperature heat pump, a medium-high temperature heat pump, and a Joule-effect electric heater connected in series, realizing the tiered conversion of electrical energy into thermal energy in different temperature zones. The tiered thermal storage unit uses high-temperature and low-temperature molten salt to store thermal energy in stages. The tiered heat utilization unit is thermally coupled with molten salt in different temperature zones, releasing thermal energy in stages according to heat demand. This invention, through tiered temperature matching at the production, storage, and utilization ends, uses Joule electric heating instead of heat pumps in the high-temperature section, significantly improving economy and reliability with minimal efficiency sacrifice. It can also be expanded into a combined cooling, heating, and power (CCHP) system, suitable for scenarios such as new energy consumption and flexible retrofitting of thermal power plants.

The invention discloses a battery module low-temperature self-heating system based on bidirectional pulse current. A battery module is used as a heated object and an energy carrier for realizing self-heating and is provided with a physical positive electrode output end and a physical negative electrode output end; and the switch module is used as a core power switching component, and the power input end and the power output end of the switch module are firmly connected with the positive electrode output end and the negative electrode output end of the battery module through wires or copper bars. The heat production mode is changed, the system enables the interior of the battery to generate high-frequency bidirectional pulse current through the switch module, the current flows through the ohmic internal resistance and the polarization internal resistance of the battery, and chemical energy of the battery is directly converted into heat energy according to the Joule effect (P = I2R); and heat is uniformly generated from each position in the battery, so that the'body heating 'effect is realized, and the problems of conduction loss and non-uniform temperature of external heating are thoroughly avoided, therefore, the heat efficiency is extremely high, the temperature rising speed is high, and the consistency of the battery module can be effectively protected.

This invention relates to the field of ironmaking technology, specifically to a method and apparatus for self-terminating Joule-driven ironmaking and gas co-production, aiming to solve the technical problems of high energy consumption, large carbon emissions, and long reaction cycles in traditional ironmaking processes. This invention uses green electricity as a driving force, utilizing the Joule effect to achieve direct reduction ironmaking from iron ore powder. The reaction self-termination is achieved through a system short circuit triggered by the formation of the metallic phase, simultaneously completing the efficient co-recovery of gas. The process employs a carbon-based conductive reducing agent for direct heating, eliminating heat transfer losses and increasing the reaction rate. The green electricity supply aligns with the requirements of dual-carbon development, the product has high purity of metallic iron particles, and the gas recovery value is significant. The apparatus achieves continuous operation and has a compact structure, providing a new technical path for the green and low-carbon transformation of the ironmaking industry.

The application provides a resistance self-heating type solid-state hydrogen storage reactor, and belongs to the technical field of hydrogen energy storage, comprising a solid-state hydrogen storage component, a heat management component and an electric heating component. The porous solid-state hydrogen storage material is a coal ash doped magnesium-based composite material, has a porous structure and intrinsic conductivity, and realizes rapid and uniform self-heating through Joule effect; heat exchange plates and hydrogen storage materials are alternately distributed, a closed loop heat management is formed by driving a heat exchange medium and a phase change material storage tank by a circulating pump, heat release recovery in the hydrogen storage stage and heat supply in the hydrogen release stage are realized; an electric heating unit supplements Joule heat through an external power supply, and a temperature control module is combined to realize real-time control of the operating state. The application solves the problems of traditional solid-state hydrogen storage, such as heat response lag, uneven temperature and high energy consumption, significantly improves the hydrogen storage / release rate, cycle stability and energy utilization efficiency, and is suitable for large-scale long-period hydrogen storage of renewable energy.

The application provides a method and device for grading gasification and reforming recovery of retired fan blades, and belongs to the technical field of solid waste decomposition and recovery. The method comprises the following steps: heating retired fan blade particles to 700-900 DEG C in an inert atmosphere, introducing water vapor for pyrolysis to obtain pyrolysis gas; introducing the pyrolysis gas into a porous medium loaded with an active metal catalyst to perform periodic pulse joule heating, and the average temperature in the process is 900-1200 DEG C to obtain hydrogen-rich synthesis gas; and cooling and recovering glass fibers in an inert atmosphere after pyrolysis. Heating in an inert atmosphere can prevent oxidation reaction and protect the structure of glass fibers; the introduction of water vapor can realize complete decomposition of the resin matrix, and the glass fibers obtained have high surface cleanliness and high tensile strength retention rate; then, the joule effect is used to realize rapid multi-stage high temperature, and the first-stage pyrolysis product is directionally converted into hydrogen-rich synthesis gas. The problems of high recovery cost and large environmental risk of the existing retired fan blades are solved.