673 results about "Heat flow" patented technology

A flow direction control device of heating stream and cooling stream is prepared as connecting said device separately to the first heat exchange unit, the second heat exchange unit, air conditioner and compressor for controlling heated working fluid from the first heat exchange unit to be sent to air conditioner for being used as the first heat media or to be sent to the second heat exchanger for being condensed there then to send it to air conditioner for being used as the second cooling media in order to make air conditioner output hot and cold alternatively, enabling to set heating course on the first heat exchange unit for providing the third heat media out.

The application belongs to the field of turbine blade thermal barrier coating of an aero-engine. Specifically, it is a structure design, a preparation method and a prepared coating of a double-layer radiation-resistant thermal barrier coating with a high-reflection layer and a high-absorption layer. The coating comprises a high-absorption layer and a high-reflection layer. The high-absorption layer can absorb part of the energy of photon radiation and re-emit it into the environment, while relying on a cooling gas film to quickly remove heat. Part of the energy of the photon radiation is reflected by the high-reflection layer again to the high-absorption layer after passing through the high-absorption layer, and the process of absorption-emission-cooling gas film heat dissipation is repeated. Within a set temperature range, the absorption rate of the high-absorption layer is determined based on the temperature difference requirement between the inner and outer surfaces of the thermal barrier coating, and the high-absorption layer material is determined based on the absorption rate. The application greatly reduces the radiation heat flow penetrating the coating, avoids the direct heating of the high-temperature alloy by infrared radiation, and significantly improves the heat insulation capacity of the thermal barrier coating and the service life of the turbine blade.

This application provides an intelligent evaluation and analysis method for the heat transfer performance of a water-cooled furnace, comprising: collecting measured values ​​of the thickness of the cast-in-place material layer, the surface temperature of the front and rear arch water-cooled walls, the cumulative thickness of the slag layer, and the heat flux density from the water-cooled furnace wall detection system; quantifying the initial heat transfer resistance distribution of the two material layers, the cast-in-place material layer and the slag layer; evaluating the variation trajectory of the cast-in-place material layer thickness measurement value and the surface temperature of the front and rear arch water-cooled walls at different times based on the total comprehensive thermal resistance of the cast-in-place material layer and the slag layer; determining the triggering conditions for dynamic adjustment of the measurement point positions; and identifying the optimal distribution position and acquisition time interval of the measurement points on the front and rear arch water-cooled walls based on the triggering conditions for dynamic adjustment of the measurement point positions and the real-time feedback of the water-cooled wall detection system, thereby obtaining a measurement point layout scheme.

This invention discloses a hot runner system and a stacked mold. The hot runner system includes a first hot runner assembly and a second hot runner assembly. The first hot runner assembly is disposed in the fixed mold, and its runner is connected to the gate of the second cavity. The second hot runner assembly is disposed in the intermediate mold, and its runner is connected to the gate of the first cavity. When the moving mold, intermediate mold, and fixed mold of the stacked mold are closed, the runners of the first and second hot runner assemblies are connected to form a continuous runner structure, and the molten injection material enters the runner of the second hot runner assembly through the runner of the first hot runner assembly. This invention, by optimizing the arrangement and feeding path of the hot runner system, maintains the high output advantage of the stacked mold while effectively improving the balance, stability, and reliability of the injection molding process.

This utility model provides a drying device for pill preparation, relating to the field of pill preparation and processing technology. The drying device includes a drying chamber with a placement plate slidably connected to its inner wall. The placement plate has placement grooves on its surface. A heating chamber is located inside the drying chamber, and a heater is installed inside the heating chamber. When pills need to be placed in the drying device for drying, to improve the drying effect of heat blowing onto the pill surface from different directions, the heater is first activated, causing heat to diffuse within the heating chamber. A connecting pump is then turned on, and through a connecting pipe, heat is transported to a vertical spray nozzle, achieving the effect of heat transporting heat to both sides of the pill. Simultaneously, heat flows through a connecting pipe to a horizontal spray nozzle, allowing heat to be transported from above the pill, achieving an all-around drying effect on the pill surface.

The application provides a multifunctional continuous flow heterogeneous or homogeneous catalytic series reaction device, which comprises a raw material gas supply pipeline, a first gas purification device, a first constant-temperature bubbling gas redispersion device, a second constant-temperature bubbling gas redispersion device, a light-concentrating photothermal reactor, a second gas purification device, a reaction gas velocity cooling device, a gas-liquid separation device and a gas collection device which are sequentially connected in pipeline along the fluid flow direction, and a fluid directional control system. Through the composite heat-resistant cavity structure and the light-heat-flow collaborative design, the device realizes the tolerance to extreme heat environment and the elimination of local hot spots, and the service life is improved by more than 3 times; through the three-stage purification process and the multi-parameter independent control system (temperature / pressure / flow rate / light intensity), the stability of the oxygen-sensitive reaction is ensured, and the reaction selectivity is more than 95%. The device solves the engineering scale-up problem in the light-concentrating catalysis field, the mass transfer efficiency is improved by 5-8 times compared with the batch system, and provides an expandable technical platform for the continuous production of solar fuels.

A charging system for charging a traction battery of a vehicle, the charging system comprising: a battery apparatus used for storing energy and charging the traction battery by means of releasing the energy; a charging connector configured for connecting to the vehicle so as to charge the traction battery via the charging connector; and a thermal management system, which comprises a first heat-exchange flow path, a second heat-exchange flow path and a first switching mechanism. The first heat-exchange flow path comprises a first heat exchanger used for exchanging heat with the battery apparatus; the second heat-exchange flow path comprises a second heat exchanger used for exchanging heat with the charging connector; and the second heat-exchange flow path is connected to the first heat-exchange flow path by means of the first switching mechanism, such that by means of a switching operation performed by the first switching mechanism, the second heat-exchange flow path is in communication with the first heat-exchange flow path via the first switching mechanism, or the communication relationship established between the second heat-exchange flow path and the first heat-exchange flow path by means of the first switching mechanism is cut off.

The application belongs to the technical field of thermal field measurement under high temperature environment, and particularly relates to a high-temperature thermal field direct measurement sensor array. In use, thermal radiation is irradiated on a heat-absorbing layer, the heat-absorbing layer absorbs the thermal radiation and transmits the heat to a high-conductivity micro region, so that a transverse thermoelectric voltage is generated between a first electrode and a second electrode, and the heat flux density at the high-conductivity micro region is calculated according to the transverse thermoelectric voltage; the temperature at the high-conductivity micro region is calculated according to the resistance between a third electrode and a fourth electrode, the heat flux density at the high-conductivity micro region is calibrated through the temperature at the high-conductivity micro region, and the spatial distribution characteristics of the heat flux are inversed by comprehensively considering the heat flux and the temperature at multiple high-conductivity micro regions. The high-temperature thermal field direct measurement sensor array can output the spatial distribution of two modes of heat flux density and temperature, and realize high-precision spatial distribution measurement of the thermal field.

The utility model provides a cold plate of the base structure of the even temperature plate for high -power consumption chip heat dissipation, including cold plate lower cover, cold plate spade tooth bottom board and cold plate upper cover, wherein, cold plate lower cover is opposite with high -power consumption chip, cold plate lower cover is away from high -power consumption chip one end with cold plate spade tooth bottom board fixed connection, cold plate spade tooth bottom board is away from cold plate lower cover one end with cold plate upper cover fixed connection, and cold plate spade tooth bottom board is equipped with cold plate spade tooth fin, the utility model discloses a cold plate of the base structure of the even temperature plate for high -power consumption chip heat dissipation, utilizes the base structure of even temperature plate to replace pure copper base plate and is more applicable to high -power consumption high heat flux density's chip to high -power consumption chip surface even temperature nature is better, in addition directly takes cold plate spade tooth bottom board as even temperature plate upper cover, has saved traditional even temperature plate upper cover and the thermal resistance of soldering tin cream, has reduced the thermal resistance of whole heat transfer path, has improved heat transfer efficiency.

The utility model relates to electronic equipment thermal management technical field, concretely relates to a kind of liquid cooling server cabinet multidirectional uniform temperature shunt mechanism. Its U-shaped pipe is set up in ascending section and descending section, ascending section is connected with first outlet end, descending section is connected with second inlet end, branch short pipe is set up in the vertex of U-shaped pipe, through the setting of ascending section and descending section of U-shaped pipe, again through the use of branch short pipe cooperation, cooling liquid can be based on gravity and fluid pressure multidirectional shunt, this design utilizes fluid natural flow characteristics, reduces the dependence on pump, simultaneously through the first outlet end of high heat flow cold plate and ascending section intercommunication, the second outlet end of low heat flow cold plate is connected with first inlet end by water pipe, and the water pipe between high heat flow cold plate and low heat flow cold plate forms dynamic circulation path, make the supply of local area flow sufficient, and then reduce the problem that mechanism temperature difference expands, to guarantee the normal use of server.

The application discloses an electromagnetic induction type liquid metal refrigeration system and a control method, which are used for a high-density heat flow heating body and comprise a heat-absorbing cold head, a radiator, a liquid storage tank and a magnetic pump. The heat-absorbing cold head, the radiator, the liquid storage tank and the magnetic pump are sequentially communicated through pipelines, the magnetic pump is communicated with the heat-absorbing cold head, and a circulation loop is formed. The heat-absorbing cold head is attached to the lower side of the high-density heat flow heating body. The liquid storage tank is used for storing liquid metal. The magnetic pump drives the liquid metal to flow in the circulation loop. The temperature of the liquid metal is detected, the liquid metal is preheated, the magnetic pump is started, and the flow of the liquid metal is controlled by adjusting the magnetic field intensity of the magnetic pump. The liquid metal flows through the heat-absorbing cold head, exchanges heat with the high-density heat flow heating body through a plurality of microchannels of the heat-absorbing cold head, and discharges heat by flowing through the radiator. The system is simple in structure, low in maintenance cost and capable of effectively improving the heat dissipation capacity of the high-heat-flow-density device.

The application relates to a multi-field coupling method for a spot welding process of a key part of rail transit, and the method establishes an electric-thermal field control equation, an electromagnetic field control equation and a heat flow field control equation for a resistance spot welding process, wherein the electric-thermal field control equation comprises a potential balance equation and a heat conduction equation. The application realizes the collaborative calculation and cross-model data transmission of key physical quantities such as current density, electromagnetic force, Joule heat and temperature distribution between different energy fields by constructing a multi-physical field coupling model of an electric field, an electromagnetic field and a temperature field, and improves the integrity and consistency of the simulation of the resistance spot welding process.

The present application relates to a heat management system and a battery, comprising a heat exchange assembly and a turbulence assembly, the heat exchange assembly comprising heat exchange components, a plurality of heat exchange flow channels are formed on the heat exchange components, the plurality of heat exchange flow channels are sequentially arranged along a first direction, and the heat exchange flow channels are used to arrange heat exchange medium; the turbulence assembly is arranged in the heat exchange flow channels, the turbulence assembly comprises a plurality of turbulence components, and the plurality of turbulence components are sequentially arranged along a second direction; at least one turbulence unit is arranged on each turbulence component; when the same turbulence component is provided with a plurality of turbulence units, the plurality of turbulence units are sequentially arranged along the first direction, and each turbulence unit is arranged in different heat exchange flow channels; at least one turbulence hole is arranged on each turbulence unit, and when the same turbulence unit is provided with a plurality of turbulence holes, the plurality of turbulence holes are sequentially arranged along the first direction. The present application changes the flow direction and state of the heat exchange medium by arranging the turbulence assembly, improves the efficiency of convective heat exchange, and meets the uniform temperature requirement.

The application relates to a subsonic aircraft heat dissipation device and belongs to the technical field of aircraft heat dissipation devices, solving the problems of high heat dissipation requirement and limited heat dissipation space of the subsonic aircraft device. The subsonic aircraft heat dissipation device comprises a heat dissipation fin, an adapter and a skin. The heat dissipation fin is in direct contact with the heat generating electronic device, and the heat generated by the heat generating electronic device is quickly conducted out by using the high heat conduction performance of the heat dissipation fin. The adapter is a connecting device of the heat dissipation fin and the skin, and can conduct the heat of the heat dissipation fin to the skin. The application can quickly transfer the heat to the air outside the skin, thereby forming a heat transfer channel, realizing the quick conduction of the heat, and can be used for the heat dissipation of high heat flow density electronic devices.

The application discloses a supercritical boiler furnace water wall safety monitoring method, system, equipment, medium and product, relates to the field of data processing and analysis, and comprises the following steps: acquiring monitoring data of electronic expansion indicators and heat flow meters at multiple different positions of a furnace water wall in real time; the monitoring data comprises expansion indication, displacement and heat flow data; stress analysis is performed on the monitoring data based on a stress data analysis system to determine a stress analysis result; and the stress condition of the furnace water wall is monitored according to the stress analysis result and a preset threshold range corresponding to the stress borne by the monitoring point of the furnace water wall, and it is judged whether early warning is needed, so that the stress condition can be effectively reflected, and the failure of the furnace water wall can be effectively reduced.

This invention relates to the field of injection mold technology, and particularly to a hot runner linked hot nozzle, comprising a hot runner plate, a support cylinder, a hot nozzle, a movable contact mechanism, a heat conduction mechanism, and a limiting and fixing mechanism. This invention solves the following problems existing in hot runner hot nozzles: the rigid contact between the hot nozzle and the gate is easily subjected to impact and wear during the opening and closing of the moving and fixed molds, leading to overflow when injecting molten plastic; after injection, a small amount of molten plastic remains between the injection end of the hot nozzle and the gate, easily causing gate blockage, and injection into the mold cavity can lead to product defects; this invention can control the contact between the hot nozzle and the gate to only occur during molten plastic injection, preventing rigid contact between the hot nozzle and the gate, effectively avoiding overflow caused by damage to the contact surface of the hot nozzle and the gate; this invention can conduct the heat of the molten plastic to the inside of the hot nozzle and the molten plastic between the bottom of the hot nozzle and the gate for heat preservation, preventing it from cooling and solidifying.

This application provides a structure and installation method for a thermal bridge-free connection node for building exterior walls, belonging to the technical field of thermal bridge connection structures for building exterior walls. It includes a precast wall, with the outer side of the precast wall being the indoor side and the inner side being the outdoor side, and a thermal inertia matching layer disposed on the inner side of the insulation board. This structure and installation method for a thermal bridge-free connection node for building exterior walls solves the defects of traditional exterior wall joints, such as significant thermal bridging effects at the connectors, thermal stress cracking at the interfaces of different materials due to abrupt changes in thermal conductivity, and the difficulty in balancing mechanical connection and thermal performance, by placing the thermal inertia matching layer between the insulation board and the cement backing board. It achieves the goal of completely blocking heat conduction along the axial direction of the connector while meeting structural load-bearing requirements, and ensuring smooth heat flow transition between structural layers, significantly improving the energy-saving performance and long-term stability of the exterior wall insulation system.

The present disclosure provides a three-phase flow and heat transfer coupled simulation method. The method includes: initializing parameters; reconstructing a liquid-liquid interface; determining a fluid volume fraction at an (n+1)-th time; determining a boundary grid; and determining a signed distance function of a grid cell at an n-th time; determining an interface curvature of the interface grid cell; determining abrupt physical quantities at a smooth interface; determining a surface tension of the interface; determining an intermediate fluid velocity; acquiring the fluid volume fraction and the intermediate velocity in each grid cell in the computational domain; determining a particle velocity; determining a displacement of a p-th solid particle at the (n+1)-th time and a solid volume fraction in the grid cell at the (n+1)-th time; determining a final velocity of the computational domain at the (n+1)-th time; and solving a temperature and an interface heat flux density.

This invention belongs to the technical field of gasification carbon production equipment, specifically a biomass pellet fuel gasification device, including a gasifier, a cyclone dust collector, an electrostatic precipitator, a dry filter, and a gas storage tank connected in series; it also includes a cooling and regulating mechanism. By setting up the cooling and regulating mechanism and utilizing the periodic docking of the cleaning nozzle, return pipe, and heat exchange channel, this invention achieves the directional transport of liquid and solid impurities that hinder heat transfer efficiency in the heat exchange channel. Therefore, during the long-term carbon production process, it not only maintains a stable cooling effect on the combustible gas, facilitating the subsequent separation of tar from the combustible gas, but also re-transports the cleaned products back to the gasifier, where the steam stream provides raw materials for the reduction process, and the tar can undergo high-temperature cracking again. This results in a reduction of the proportion of waste produced from biomass pellet fuel gasification carbon production and an increase in the combustible gas recovery rate.

A modified ethylene vinyl alcohol copolymer having a saponification degree of 70 mole% or more according to JIS K 6726 (1994); wherein the modified ethylene vinyl alcohol copolymer has monomer units containing carboxylic acid groups and monomer units containing lactam functional groups; wherein the modified ethylene vinyl alcohol copolymer has a 1 H-NMR spectrum, the integral area of the spectrum at 3.65 to 4.00 ppm is defined as 1, and the integral area corresponding to the spectrum at 2.05 to 2.35 ppm is 0.002 to 0.200; wherein the modified ethylene vinyl alcohol copolymer is subjected to thermal analysis by a differential scanning calorimeter, and the curve obtained by plotting the temperature as the X axis and the heat flow as the Y axis has a slope between -0.00100 and -0.00190 W / g°C at 100°C to the melting point Tm (°C). The modified ethylene vinyl alcohol copolymer of the present application is suitable for preparing a polyvinyl alcohol aqueous film. The present application also relates to a resin film and a water-soluble packaging.

The present application relates to the technical field of heat pump, in particular to a two-coupled heat pump system. The present application aims to solve the problem of low energy efficiency of the existing two-coupled heat pump. For this purpose, the two-coupled heat pump system of the present application comprises: a thermoacoustic engine comprising a cold-end heat exchanger, a first hot-end heat exchanger and a second hot-end heat exchanger; a first outdoor heat exchange part in heat exchange with the cold-end heat exchanger; a compressor in circulation communication with the first hot-end heat exchanger through a first refrigerant pipeline; a throttling element between the exhaust port of the compressor and one end of the first hot-end heat exchanger; an intermediate heat exchanger having a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path being located between the exhaust port of the compressor and the throttling element; a first indoor heat exchange part in direct or indirect heat exchange with the second hot-end heat exchanger; and a second indoor heat exchange part in heat exchange with the second heat exchange flow path. The present application can realize greater temperature span operation of the system, improve the energy efficiency and application range of the system.

This invention provides a molding die for a composite satellite fairing, comprising: a main female mold (1), a front support base (2), and a rear support base (3); the main female mold (1) includes a molding curved template (4), a porous reinforcing rib plate (5), base mounting feet (6), and a back venting structure (7). This invention enables uniform heating of the double-curvature structure, thereby reducing curing deformation and improving the appearance molding quality. This invention designs the size of the vent holes in the back reinforcing ribs of the large-size fairing mold through iterative analysis of the thermal flow field. As the distance in the heat flow direction increases, the cross-sectional area of ​​the vent holes gradually decreases, allowing more heat flow to accumulate in the mold's location away from the heat source, reducing the temperature gradient on the back of the mold in the heat flow direction, resulting in a uniform mold surface temperature and reduced curing deformation.

The application relates to the battery technical field and provides a control device, a thermal management system and energy storage equipment. The thermal management system comprises a control device, a refrigerant unit and a heat exchange unit. Heat exchange fluid in a heat exchange flow path can exchange heat with refrigerant in a refrigerant flow path. The control device comprises a box body, a control module and a heat exchange structure. The box body forms a placing cavity and an assembly opening. The assembly opening is communicated with the placing cavity. The control module is arranged in the placing cavity. The heat exchange structure seals the assembly opening. The heat exchange structure comprises a fluid channel. The fluid channel is communicated with the heat exchange flow path. The heat exchange flow path is used for heat exchange with a battery monomer. Heat exchange fluid in the heat exchange flow path can flow through the fluid channel, so that the heat exchange fluid exchanges heat with the control module, and the control module is cooled or heated. The heat exchange structure seals the assembly opening. The heat exchange structure can occupy as little space as possible in the placing cavity.

This invention relates to the field of denitrification control and regulation, and discloses an intelligent ammonia injection stability control method and system based on the principle of chemical reaction equilibrium. By collecting multi-point flue gas parameters at the inlet section of the denitrification system and combustion operation data on the boiler side, a multi-source data fusion algorithm is used to reconstruct the physical field distribution at the reactor inlet and output the flue gas heat flow distribution matrix. Combined with catalyst characteristic parameters and the Arrhenius equation, the reaction rate constant and residence time of each discrete region are calculated to generate a regional reaction kinetic potential energy spectrum. Based on the principle of chemical reaction equilibrium, the difference between the maximum ammonia injection capacity and the actual demand under ammonia escape constraints in each region is calculated to construct a stoichiometric equilibrium deviation vector. The stoichiometric equilibrium deviation vector is mapped to the physical topological coordinates of the ammonia injection grid and converted into the opening command of each branch regulating valve through the partition flow characteristic function, thereby realizing the elimination of the stratification deviation of nitrogen oxide concentration at the outlet of the denitrification system and the effective control of ammonia escape concentration.