2743results about How to "Improve heat transfer efficiency" patented technology

The invention relates to the technical field of heat exchange modules, and discloses a multi-cavity cooperative control method and device for a micro-channel heat exchange module and electronic equipment, and the method comprises the steps: carrying out the numerical simulation calculation of a plurality of heat exchange cavities of the micro-channel heat exchange module, and obtaining a training data matrix; coefficient calculation and heat flow coupling relation analysis between cavities are carried out, and a heat flow distribution mathematical model is generated; substituting the heat flow distribution data, the temperature distribution data and the flow distribution data into a non-homogeneous heat conduction equation, and constructing a multi-objective optimization function; executing chaotic mapping processing and multi-target collaborative differential evolution to obtain an optimal control scheme set; carrying out Q-learning state value function solving, and generating a cooperative control instruction; and inputting the cooperative control instruction into an execution unit, and performing real-time adjustment and online updating on inlet temperature parameters and flow parameters of each heat exchange cavity to obtain a target heat flow distribution model. Therefore, information interaction and optimized cooperation among the heat exchange cavities are achieved, and the heat exchange efficiency is remarkably improved.

The invention provides a hydrophilic and hydrophobic composite wetting microstructure steam cavity and a manufacturing method thereof, and relates to the technical field of heat dissipation devices. The hydrophilic and hydrophobic composite wetting microstructure steam cavity comprises an evaporation end and a condensation end, the surface of the evaporation end comprises a micro-channel hydrophilic area and a micro-array hydrophilic area, and the micro-channel hydrophilic area surrounds the micro-array hydrophilic area; the surface of the condensation end comprises condensation hydrophilic areas and condensation hydrophobic areas which are distributed at intervals, and the evaporation end and the condensation end are assembled to form a flat plate structure with a cavity in the middle. Different wettability surfaces of the condensation hydrophilic area and the condensation hydrophobic area are compounded, rapid nucleation condensation can be achieved, droplet-shaped condensation heat transfer of rapid falling of liquid drops in the condensation hydrophobic area and capillary suction rapid liquid discharge of the micro-channel hydrophilic area at the evaporation end are combined, condensation heat transfer of a working medium is enhanced, liquid backflow circulation is accelerated, and the condensation efficiency is improved. The temperature uniformity of the hydrophilic and hydrophobic composite wetting microstructure steam cavity is greatly improved, and batch forming of large-area microstructure functional surfaces is achieved through the in-situ heating imprinting forming micro-imprinting technology.

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The utility model relates to the field of solid hydrogen storage, and discloses a magnesium-based solid hydrogen storage tank, and magnesium-based solid hydrogen storage materials are stored in the hydrogen storage tank. A foam metal material with heat-conducting property is filled between the magnesium-based solid hydrogen storage materials. The utility model has the beneficial effects that the system heat exchange efficiency is improved, the hydrogen charging and discharging rate is increased, the cycle life is prolonged, and the safety problem caused by excessive extrusion on the container body due to expansion of the magnesium alloy material can be effectively prevented.

The invention relates to the technical field of extremely-low-temperature refrigeration equipment, and provides an annular heat exchange unit which comprises a flow channel box, and the two ends of the flow channel box are covered with an upper cover body and a lower cover body correspondingly; a cavity partition plate is arranged in the runner box to form an upper heat exchange cavity and a lower heat exchange cavity; two upper runners which are not communicated with each other are arranged in the upper heat exchange chamber; two lower runners which are not communicated with each other are arranged in the lower heat exchange chamber; the adjacent flow channel partition plates in the two cavities are arranged in a staggered mode to form a transition flow channel. The annular heat exchange unit further comprises two circulating pipe sets. Therefore, the two heat exchange channels which are not communicated with each other and are arranged up and down are formed in the runner box; media in the two heat exchange channels do not make contact with each other, and heat exchange is achieved through the flow channel partition plate in the flowing process. On the premise that the overall size of the runner box is not increased, two heat exchange channels which are arranged in an up-down staggered mode are formed in the runner box. The heat exchange efficiency is improved, and the space is saved. The invention provides a multi-stage heat exchanger and a dilution refrigerator.

The invention belongs to the technical field of battery thermal management, and discloses a battery pack and a phase change material coupling liquid cooling composite thermal management system.The battery pack comprises a plurality of battery structures, each battery structure comprises a lithium battery, a fin structure, a phase change material filling area and a liquid cooling plate, and the fin structure is arranged on the periphery of the lithium battery; the liquid cooling plate is arranged on the periphery of the fin structure, a phase-change material filling area is formed between the liquid cooling plate and the fin structure, and the phase-change material filling area is filled with a phase-change material for absorbing redundant heat and generating phase change, so that the temperature fluctuation of the battery is reduced. The lithium bromide heat pump and the direct-current power supply are combined, and accurate adjustment of the temperature of the battery pack is achieved through efficient heat exchange and intelligent control. The system can be rapidly switched between a cooling mode and a heating mode, and it is ensured that the battery is always kept within the optimal temperature range in different working environments.

The invention discloses a CFD-based liquefied natural gas after-condenser structure optimization method and device. The method comprises the steps that an initial model is established based on an assembly drawing, and geometric pretreatment is completed; extracting a fluid channel, segmenting and selecting a computational domain, and carrying out local encryption on a key region; generating a polyhedral grid by using a grid division tool, and completing grid independence verification; importing the polyhedral mesh into a solver, and carrying out model setting; boundary and wall surface conditions are set, and solver parameters are configured; setting an initial flow field through a hybrid initialization method, and establishing a flow monitoring window and a temperature monitoring window to adjust simulation until convergence; analyzing the temperature cloud picture and the flow vector diagram, and adjusting the structure of the baffle plate; the tower diameter and the height of the filler layer are adjusted according to a physical quantity field change curve of the filler layer, and the performance of the recondenser is continuously improved. The problem of how to deeply study the flow heat transfer rule in the after-condenser and obtain the flow field distribution characteristics is solved, so that the working performance of the after-condenser is improved.

The invention discloses a semiconductor device, a power module, a power conversion circuit, a vehicle and a preparation method of the semiconductor device. The semiconductor device comprises a semiconductor body and a gate structure located in a gate groove; the source electrode structure is positioned in the source electrode groove; the drain electrode is located on the second surface; the source electrode is located on the first surface, a third surface, far away from one side of the drain electrode, of the source electrode is provided with a first groove, and the first groove extends into the source electrode from the third surface; the passivation layer is located on the side, away from the drain electrode, of the source electrode, and at least part of the passivation layer is located in the first groove. According to the semiconductor device, the power module, the power conversion circuit, the vehicle and the preparation method of the semiconductor device, the binding force between the passivation layer and the source electrode is improved, cracking is avoided, and the stability of the device is improved.

The invention discloses a steam waste heat recovery and cyclic utilization device for a periodic blowdown flash tank, and relates to the technical field of heat recovery, the steam waste heat recovery and cyclic utilization device comprises a tank body, the tank body is internally provided with a steam absorption assembly and a heat exchange assembly used for absorbing heat of high-temperature waste hot water and secondary steam; the heat exchange assembly comprises a mounting box, a plurality of horizontally-arranged heat exchange pipes are rotationally arranged in the mounting box, a plurality of buffer plate sets corresponding to the heat exchange pipes are arranged in the mounting box, and belt transmission mechanisms are arranged among the heat exchange pipes. According to the heat exchanger, the rotatable heat exchange pipes are arranged, scale removing scraping strips on the first flow guide plate are matched to automatically remove scale generated in the heat exchange process, and the problem that the heat exchange efficiency is reduced due to scale accumulation is effectively solved; and soft water formed after the bottom surface of the heat exchange pipe and secondary steam are subjected to heat exchange and condensation is collected into the liquid collecting tank, so that secondary utilization of water resources is realized.

The invention relates to the technical field of coolers, and provides a plate type cooler which comprises a box body and a spraying pipe and further comprises a plurality of heat exchange plates, the heat exchange plates are arranged in the box body at intervals and located below the spraying pipe, every two adjacent heat exchange plates are communicated, each heat exchange plate comprises a plate body, each plate body is provided with a cavity, and heat exchange water is introduced into each cavity; the multiple turbulent flow strips are arranged in the cavity at intervals, each turbulent flow strip is provided with a baffling part and a turbulent flow part, one end of each baffling part is arranged on the inner wall of the plate body, and each turbulent flow part is rotationally arranged at the other end of the corresponding baffling part; the control piece penetrates through one side of the plate body and extends out of the box body, the control piece is provided with a connecting end, the connecting end is arranged on the turbulent flow part, and the control piece is used for driving the turbulent flow part to rotate. By means of the technical scheme, the problems that in the prior art, due to the fact that channels between the plates of a traditional plate cooler are very narrow, the phenomenon of blockage after scaling is prone to occurring, and the heat exchange effect is affected are solved.

The invention relates to the technical field of heat exchange unit optimization control, and discloses a standardized heat exchange unit circulating water and water supplementing optimization control method which comprises the following steps: S1, in a heat exchange unit circulating water system, installing a plurality of sensors, collecting data in real time, and establishing a database to record parameter changes; s2, analyzing the multi-parameter data monitored in real time by using an intelligent prediction algorithm; s3, according to a temperature change prediction result, determining the adjustment requirements of the water supplementing temperature and the water supplementing amount, and adjusting the water supplementing temperature in advance based on the prediction model to realize accurate control; and S4, monitoring the temperature, the flow, the pressure and the environment temperature of the circulating water in real time. By means of multi-parameter real-time monitoring and intelligent control over the circulating water and water supplementing system of the heat exchange unit, accurate adjustment of the water supplementing temperature and the water supplementing amount is achieved, the problem that temperature lag control is not accurate in a traditional system is solved, the heat exchange efficiency is improved, and energy consumption is reduced.

The utility model relates to the technical field of shell-and-tube heat exchangers, and particularly discloses a multi-pipe-diameter multi-helix-angle multi-strand winding pipe type heat exchanger. Comprising a shell, a middle core cylinder installed in the shell and a spiral assembly spirally wound on the outer side of the middle core cylinder in the axial direction of the middle core cylinder. The spiral assembly comprises a plurality of spiral winding tube bundle layers which are spirally wound on the outer side of the middle core cylinder in sequence; each spiral winding tube bundle layer comprises a plurality of groups of spiral winding tubes wound on the outer side of the middle core cylinder, and the outer diameters of the spiral winding tubes in each spiral winding tube bundle layer are arranged at equal intervals; one or more fluid media are arranged in the spiral winding pipes on the same layer, and one or more wall thicknesses of the spiral winding pipes are arranged and correspond to the fluid media in a one-to-one mode. The heat exchange requirement and the winding strength requirement can be effectively met, meanwhile, the use efficiency of the material can be improved, and the production and processing cost can be reduced.

The invention discloses a high-temperature radiation furnace tube for enhancing heat transfer as well as a preparation method and application of the high-temperature radiation furnace tube. The heat-transfer-enhanced high-temperature radiation furnace tube comprises a high-temperature radiation furnace tube, namely a thick tube, of which the inner surface is subjected to roughness treatment and / or a high-temperature radiation furnace tube, namely a streaming terminal, of which the inner surface is sequentially subjected to roughness treatment and streaming structure surfacing treatment, and the roughness parameter Ra of the inner surface of the thick tube is 3.2-40.5 m; and the streaming structure is in one or more forms of a sphere, a raindrop shape and a strip shape. According to the invention, the heat conduction effect and the temperature and airflow uniformity of the furnace tube can be obviously improved through combination of slight increase of the inner surface area and a micron-scale inner surface streaming structure within a certain range, meanwhile, the filling volume of a catalyst in the furnace tube is not influenced, and obvious pressure drop at the outlet end of the furnace tube is avoided.

The utility model provides a novel stirring rake type drying machine with triangular rake teeth, which mainly comprises an end socket, a feed port, a barrel, the rake teeth, a stirring paddle, a thermal medium inlet, a stirring shaft, a scraping plate, a discharge valve and a thermal medium outlet, the left end of the barrel is connected with the end socket through a flange and a bolt, and the right end of the barrel is welded with the end socket. The two ends of the stirring shaft are supported on end sockets on the two sides of the round barrel through the sealing system, the stirring paddle is connected with the rake teeth, the scraping plate is arranged at the end sockets, the discharging valve is arranged at the discharging port, and the thermal medium inlet and the thermal medium outlet are formed in the two sides of the barrel. The stirring paddle is a triangular stirring paddle and has the advantages that the heat exchange area is large, the stirring torque is small, the stirring paddle cannot be broken and the like, the stirring shaft, the stirring paddle and the rake teeth are provided with internal heating flow channels, heating is even, the heat exchange efficiency is high, and materials can be evenly mixed only by rotating forwards in the drying process. And during discharging, the materials can be pushed to the position of the discharging valve only by reversing during stirring.

The invention discloses a low-temperature rectifying tower, and relates to the technical field of chemical equipment, the low-temperature rectifying tower comprises a tower body, a condensation circulating system arranged at the top of the tower body and a heat circulating system arranged at the bottom of the tower body, and further comprises a supporting column, a rectifying tower body, a rectifying tower cover and a rectifying tower cover, and the supporting column is supported at the central position in the tower body through a supporting frame; the tower plates are of hopper-shaped structures, the tower plates are arranged on the supporting column at intervals in the height direction of the supporting column, an opening of each tower plate faces the bottom of the tower body, a plurality of steam holes are formed in each tower plate, and a gap exists between the edge of each tower plate and the inner wall of the tower body; the baffle covers are in a hopper shape, the baffle covers are arranged between every two adjacent tower plates, through holes are formed in the centers of the baffle covers, gaps exist between the through holes and the supporting columns, the outer edges of the baffle covers are fixedly connected with the inner wall of the tower body, and the opening directions of the baffle covers face the top of the tower body. The heat and mass transfer efficiency of a gas phase and a liquid phase on the surface of the tower plate can be improved.

The utility model discloses a multi-pass falling film evaporator. An upper port of a barrel is hinged with an upper tube box, and the lower end of the barrel is connected with a lower tube box; a plurality of heat exchange tubes are connected between an upper tube plate and a lower tube plate of the barrel; a plurality of liquid distribution discs which are isolated from one another and integrally spliced into a circle are arranged above the upper tube plate, and liquid distribution holes of each liquid distribution disc are distributed in the periphery of a tube opening of each heat exchange tube below in a regular triangle shape; a plurality of tube pass material inlet tubes are inserted into the dome of the upper tube box, and the lower ends of the tube pass material inlet tubes point to the centers of the corresponding liquid distribution discs respectively; the bottom of the lower tube box is divided into a plurality of liquid collection spaces by partition plates, each pass liquid collection space corresponds to each pass liquid distribution disc, and the lowest part of each pass liquid collection space is connected with a tube pass material outlet tube; an expanding section is arranged on the upper portion of the barrel, a shell pass steam inlet is formed in the circumference of the expanding section, a condensate water outlet is formed in the side wall of the lower portion of the barrel, and a secondary steam outlet is formed in the side wall of the middle section of the lower tube box. The evaporator is small in occupied area, convenient to overhaul, convenient to adjust and good in evaporation quality of thermosensitive media.

The present invention discloses a gas-liquid separation structure, a heat exchanger and an air conditioner. The gas-liquid separation structure comprises a separation chamber, an inlet for a gas-liquid two-phase fluid, a first gas outlet and a liquid outlet, wherein the first gas outlet is located on the upper side of the liquid outlet, and a gas branch flow path and a liquid branch flow path are arranged in the separation chamber, wherein the first end of the gas branch flow path is connected to the inlet, and the second end extends upward and is connected to the first gas outlet, and the first end of the liquid branch flow path is connected to the inlet, and the second end extends downward and is connected to the liquid outlet. The liquid outlet of the gas-liquid separation structure is connected to the inlet manifold of the heat exchanger, and the first gas outlet is connected to the outlet manifold of the heat exchanger through a gaseous refrigerant flow path. The technical solution provided by the present invention is that a gas-liquid separation structure is arranged in front of the inlet manifold of the heat exchanger, so that the two-phase refrigerant can be separated, and the separated liquid refrigerant can be evenly distributed among a plurality of refrigerant heat exchange flow paths, thereby improving the heat exchange efficiency of the heat exchanger.

The invention relates to the technical field of heat exchangers, in particular to a plate heat exchanger cleaning system, a plate heat exchanger and a cleaning method. The fluid monitoring devices are installed at an inlet and an outlet of the plate heat exchanger respectively, connected with the control device and used for monitoring fluid data of the inlet and the outlet of the plate heat exchanger and transmitting the data to the control device. The high-pressure cleaning device is arranged between plate channels of the plate heat exchanger, is connected with the control device and is used for acquiring an instruction of the control device and cleaning the plate channels of the plate heat exchanger; the control device is used for receiving the fluid data of the fluid monitoring device and generating a cleaning instruction to the high-pressure cleaning device. Real-time monitoring and a response mechanism are combined, the fluid monitoring device, the high-pressure cleaning device and the control device are combined for control, the self-cleaning function of the plate heat exchanger is achieved, and the problems that an existing plate heat exchanger is difficult to clean and low in efficiency are solved.

The utility model discloses a cascade heat pump system which comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first compressor and a second compressor. The first heat exchanger is arranged in an outdoor environment and exchanges heat through an outdoor fan; the second heat exchanger comprises a first passage and a second passage and is used for heat exchange between a refrigerant in the first passage and a refrigerant in the second passage; the first compressor, the first heat exchanger and the first passage form a first cycle; the third heat exchanger exchanges heat with the liquid heat exchange medium; the second compressor, the second passage and the third heat exchanger form a second cycle; the fourth heat exchanger exchanges heat with the liquid heat exchange medium and forms a third cycle with the first heat exchanger and the first compressor; the first cycle and the second cycle are in linkage heating operation or the third cycle is in linkage operation; and the third cycle can be used for refrigerating or heating. According to the utility model, high-efficiency operation and high-efficiency defrosting of the system are realized when the compression ratio is medium and small, the power of an outdoor fan is not increased, and energy and cost are saved.

The utility model discloses a vehicle-mounted dehumidification protection air temperature type carbon dioxide gasification pry. The device comprises a protection box body and a gasifier located in the protection box body, the gasifier is provided with a gasification tube bundle, the front end of the gasification tube bundle is connected with the liquid separation side of a high-pressure common rail pipeline, and the rear end of the gasification tube bundle is connected with a carbon dioxide outlet pipeline through a collection box; the top of the protection box body is provided with a fan, the side face is provided with a shutter, and the bottom is provided with a dehumidification protection net and a folding protection bottom plate. And the fan adopts a blowing type or induced air type working mode, and adopts different air inlet modes according to different air humidity conditions, so that the gasification efficiency and stability are improved. According to the forced convection heat exchange principle, based on the bottom dehumidification device, the inertia separation technology of gas-liquid speed steering is utilized, two different operation states of the draught fan are adopted, and all-weather efficient, stable and safe high-pressure gasification operation is achieved by matching angle adjustment of the shutters on the two sides and air injection and entrainment to remove the influence of the boundary effect of the wall face.

The invention belongs to the technical field of heat exchange equipment, and particularly relates to a double-layer coil pipe type multi-stage heat exchanger and a heat exchange method thereof.The double-layer coil pipe type multi-stage heat exchanger comprises multiple heat exchanger bodies which are sequentially connected in series, each heat exchanger body comprises an outer cylinder, an inner cylinder, a first-layer coil pipe and a second-layer coil pipe, and each outer cylinder is arranged on the outer wall of the corresponding inner cylinder in a sleeving mode and provided with a fluid inlet and a fluid outlet; a fluid inlet and a fluid outlet which are communicated are formed in the inner cylinders, the fluid outlet of the upper-stage inner cylinder is communicated with the fluid inlet of the lower-stage inner cylinder, and the first-layer coil pipe and the second-layer coil pipe are both arranged in an annular cavity formed by the outer cylinder and the inner cylinders.

According to the charging station heat exchange method based on the ground source system, a ground source heat pump system is adopted as heat exchange equipment, and the heat exchange efficiency of a charging station is effectively improved through underground low-temperature heat energy; real-time regulation and control of the battery temperature of the new energy automobile are achieved by regulating and controlling the operation parameters of the ground source heat pump unit in real time, and safe operation of the battery is guaranteed; the heat generated by the charging pile and the new energy automobile is recovered and recycled, the energy consumption of the charging station is reduced, and the problems that the heat dissipation effect of an existing charging station heat dissipation mode is greatly influenced by the environment temperature, and the heat dissipation effect is poor in high-temperature weather are solved; an air cooling system is loud in noise and affects the surrounding environment; a water cooling system needs to replace cooling liquid at regular intervals, and the maintenance cost is high.

The invention provides a single crystal furnace and a monocrystalline silicon preparation method, and belongs to the technical field of semiconductors. The single crystal furnace comprises a furnace body; the graphite crucible is positioned in the furnace body; the quartz crucible is positioned in the graphite crucible and is used for containing a multi-silicon crystal material to be molten; the cylindrical side heater is coaxial with the furnace body and is arranged on the outer side of the graphite crucible in a sleeving manner; the bottom heater is arranged at the bottom of the graphite crucible; the guide cylinder is positioned above the quartz crucible; the controller is connected with the side heater and the bottom heater through electrodes and used for controlling power output to the side heater and the bottom heater. According to the invention, a uniform and controllable thermal environment can be provided, the yield of the silicon single crystal rod is improved, and the quality of the drawn silicon single crystal rod is ensured.

The invention relates to the technical field of electromagnetic heaters, and discloses a tank-type explosion-proof electromagnetic heater, comprising a tank body and an explosion-proof junction box installed on the outside of the tank body, wherein the tank body comprises, from outside to inside, a heat preservation layer, an electromagnetic coil and a heating cylinder, one end of the heating cylinder is fixedly connected with a feed port, the outside of the heat preservation layer is fixedly installed with a discharge port connected with the heating cylinder, and a plurality of conical plates are fixedly installed on the inner wall of the heating cylinder. The invention fixes a plurality of conical plates on the inner wall of the heating cylinder, and penetrates through a circular hole on one side of the conical plate, and the conical plate is directly connected to the inner wall of the heating cylinder. Through heat conduction, water flow contacting with the conical plate can also be heated, thereby increasing the heated area of ​​the fluid and rapidly raising the temperature of the fluid. Moreover, water passing through the circular hole can increase the flow rate of water and increase the degree of turbulence, thereby increasing the degree of mixing of the heated fluid with the low-temperature fluid and improving the heat transfer efficiency between the fluids. At the same time, in conjunction with stirring, the water flow in the heating cylinder can be heated more evenly.

The invention relates to the technical field of medical instruments, and discloses an isolation melting device and a pulp melting machine. The isolation melting device comprises a fixed frame which defines a mounting space; the movable support comprises a first support and a second support, one end of the first support is rotatably connected with one end of the second support, and the other end of the first support and the other end of the second support can move towards each other or away from each other; the bag body is provided with a bag opening and is connected with the first bracket and the second bracket; wherein the movable support can move into or out of the installation space, when the movable support moves into the installation space, the installation space limits the first support and the second support, the first support and the second support move oppositely, the bag body shrinks, and the area of the bag opening is reduced; when the movable support moves out of the installation space, the installation space relieves limiting of the first support and the second support, the first support and the second support move away from each other, the bag body expands, and the area of the bag opening is increased. Placement convenience of the plasma bag is improved, and heat exchange efficiency is improved.

The invention belongs to the technical field of heat exchangers, powder metallurgy sintering technology application, ultra-low temperature technology, ultra-low temperature equipment and the like, and discloses a plum blossom type silver powder sintering heat exchange sheet and a mixing chamber. The plum blossom type silver powder sintering heat exchange piece comprises a supporting framework and a silver powder sintering block, a threaded hole and a plurality of through holes surrounding the threaded hole are formed in the supporting framework, and the threaded hole is used for being matched with an installation column of the mixing chamber. The silver powder sintered blocks are formed on the two oppositely-arranged faces of the supporting framework through sintering, and the silver powder sintered blocks are provided with connecting parts filled in the through holes. According to the plum blossom type silver powder sintered heat exchange piece, the concentrated-phase or dilute-phase heliumtrihelium tetra mixed liquid and the large surface area of the silver powder sintered block have the sufficient contact condition, the heat exchange effect and the heat exchange efficiency are improved, and the plum blossom type silver powder sintered heat exchange piece is compact in structure and quite suitable for a mixing chamber of a small-refrigerating-capacity dilution refrigerating machine.

The invention discloses an ice melting and storing device outside a spiral coil pipe, and belongs to the technical field of ice melting devices. Comprising a cylindrical ice storage tank, a water inlet header pipe is arranged on the upper portion, a water outlet header pipe is arranged on the lower portion, the water inlet header pipe is connected with a water distributor, and the water outlet header pipe is connected with a water collector; the spiral heat exchange coil pipe is arranged in the cylindrical ice storage tank; the air blowing assembly is arranged at the bottom of the cylindrical ice storage tank, and the air blowing assembly is used for blowing air flow into the cylindrical ice storage tank; the water collector and the air blowing assembly are two concentric annular channels and are integrally arranged at the bottom of the cylindrical ice storage tank, a plurality of first communicating holes are formed in the water collector, and a plurality of second communicating holes are formed in the air blowing assembly. By means of the device, return water with the high temperature is discharged into the cylindrical ice storage tank again, meanwhile, air flow is blown into the cylindrical ice storage tank through the air blowing assembly, water flow in the cylindrical ice storage tank is disturbed, and melting of ice bodies is promoted.

The invention provides an oil slurry heat exchanger scaling early warning method, device and equipment, a medium and a descaling system, and belongs to the field of heat exchanger scaling prediction.The early warning method comprises the steps that operation parameters of an oil slurry heat exchanger are obtained; determining an actual total heat transfer coefficient and actual heat exchange efficiency based on the operation parameters of the slurry oil heat exchanger; based on the actual total heat transfer coefficient and the actual heat exchange efficiency, a scaling early warning index is determined; and generating scaling early warning information based on a comparison result of the scaling early warning index and the scaling early warning threshold value. The early warning device comprises a data acquisition unit, a data processing unit, an early warning index determination unit and an early warning information generation unit; the descaling system comprises a cleaning device, a control device and early warning equipment. Through the method provided by the invention, a more accurate early warning scaling condition can be obtained, and the operation reliability of the oil slurry heat exchanger is improved.

The invention relates to the technical field of vehicle heat management, in particular to an energy-saving heat pump integrated heat management system which comprises a pipeline module, a motor electric control heat dissipation module, a cab refrigerating and heating module, a single battery refrigerating and heating module and a control module. Cooling liquid circulates to dissipate heat; according to the system, parts with the same functional attributes are integrated, the number of the parts is reduced, the cost is reduced, the efficiency is improved, the cost and energy consumption of the whole vehicle are reduced, refrigerants are directly communicated with the liquid cooling plate, the energy consumption of the whole vehicle is reduced, and the energy consumption of the whole vehicle is reduced. The battery pack is cooled and heated, the heat exchange efficiency is effectively improved, heat absorption and heat release are conducted on a refrigerant, PTC is omitted, waste heat generated by a motor loop is subjected to heat exchange with the refrigerant, the overall temperature of the refrigerant is increased, the waste heat of a motor is utilized, heat loss is avoided, and the endurance mileage of a vehicle is increased.

The utility model discloses a tantalum tube type heat exchanger which comprises a heat exchange header pipe, detachable installation plates are correspondingly installed at the upper end and the lower end of the heat exchange header pipe, a plurality of first medium pipes are correspondingly arranged between the upper installation plate and the lower installation plate, and first media for heat exchange can flow into the first medium pipes correspondingly. A second medium inlet pipe is correspondingly installed on one side of the upper end of the heat exchange header pipe, a second medium outlet pipe is correspondingly installed on one side of the lower end of the heat exchange header pipe, and a second medium for heat exchange flows in from the second medium inlet pipe, exchanges heat with the first medium pipe in the heat exchange header pipe and then is discharged from the second medium outlet pipe at the lower end. The heat exchange header pipe is arranged in the heat exchange header pipe, the first medium pipe is arranged in the heat exchange header pipe, the second medium inlet pipe and the second medium outlet pipe are installed at the upper end and the lower end respectively, heat exchange of two different media can be effectively conducted, the structure is simple and effective, and mounting and dismounting are convenient.