31results about How to "Efficient heat transfer" patented technology

The invention relates to the technical field of fresh air equipment, and discloses a dehumidification and purification integrated fresh air system which comprises a shell, a middle cylinder and an inner cylinder are sequentially nested in the coaxial position in the shell from inside to outside, and end covers are installed at the two ends of the shell, the two ends of the middle cylinder and the two ends of the inner cylinder in a sealed mode. A pre-interaction assembly used for carrying out split pretreatment on outdoor fresh air is arranged in the shell. According to the equipment, outdoor fresh air is precisely divided into a large amount of main path fresh air and a small amount of bypass fresh air through cooperation of all parts of a pre-interaction assembly, the bypass fresh air enters an inner cavity of an inner barrel to penetrate through an inner filter layer at a low speed to be pre-dehumidified and become dry air, and the dry air is injected into a mixing cavity through a backflow pipe and impacts and pushes a closing block open; the main path fresh air and the dry air are forcibly mixed in the mixing cavity to form relatively dry fresh air, so that mixing and filtering are performed firstly, high-humidity air is prevented from being in direct contact with a rear-end filter screen, the problem of easy mildewing caused by dust removal firstly is solved, and the service life of the filter screen is prolonged.

The invention relates to the technical field of chemical equipment, and discloses a methanation fixed bed reactor. The methanation fixed bed reactor comprises a reactor wall with a multi-layer structure and a reaction chamber defined by the reactor wall, and the reactor wall with the multi-layer structure comprises a metal shell, a refractory layer, a heat insulation layer and an aerogel heat preservation layer; the heat insulation layer and the fireproof layer are sequentially arranged on the inner wall of the metal shell, and the aerogel heat preservation layer is arranged on the outer wall of the metal shell. And the thicknesses of the fireproof layer and the heat insulation layer meet the requirement that the temperature of the outer surface of the metal shell is lower than 300 DEG C. The fireproof layer and the heat insulation layer are used for preventing overtemperature of the reactor wall, the aerogel heat preservation layer is used for conducting heat preservation on the reactor wall, the situation that when the environment temperature changes, the temperature difference between the interior and the exterior of the reactor wall is too large, gas condensation is caused, and a reactor is damaged is avoided, and the aerogel heat preservation layer thermochromism can give an alarm in time.

The application relates to the technical field of heat exchange equipment, in particular to a transverse liquid film type dehumidification condenser. The transverse liquid film type dehumidification condenser comprises a shell and a uniform flow assembly and a fiber silk group arranged in the shell. The shell is respectively provided with a liquid inlet and a liquid outlet at two ends along a first direction, and is provided with air passing openings at two ends along a second direction. The fiber silk group comprises a plurality of fiber silks arranged in an array in multiple rows and multiple columns along the first direction and along a third direction; the uniform flow assembly is located between the fiber silk group and the liquid inlet, and is used for distributing the liquid during liquid falling, so that the liquid is uniformly diffused in a cross section of the shell perpendicular to the first direction, so as to improve the heat and humidity exchange effect of the liquid and the airflow; meanwhile, a liquid film is formed on the surface of the fiber silk group, so that the gas-liquid contact path is extended through the fiber silk group; meanwhile, the generation of liquid drops is promoted through the fiber silk group, so that the phase change heat transfer efficiency is effectively improved by relying on the rapid generation and falling of the liquid drops.

The invention discloses a mica ceramic heating plate and an assembling method thereof, and belongs to the technical field of electric heating equipment, the heating plate comprises a plate body assembly, the plate body assembly comprises an upper plate cover and a lower plate seat, one end of the lower plate seat is provided with a mounting groove matched with the upper plate cover, and the other end of the lower plate seat is provided with a cavity communicated with the mounting groove; a heating assembly is arranged in the mounting groove and located between the upper disc cover and the lower disc base, the heating assembly comprises a base plate matched with the mounting groove and mica sheets arranged on the surfaces of the two sides of the base plate, and the mica sheets on the two sides of the base plate are flexibly attached to the lower disc base and the upper disc cover respectively. According to the heating disc of the scheme, thermal resistance caused by air gaps in the heating disc can be eliminated, and heat is efficiently conducted to the heating disc; meanwhile, stress generated by thermal expansion and cold contraction of an internal structure can be effectively absorbed, damage such as cracking of the disc body is prevented, and the service life of the disc body is effectively prolonged. According to the scheme, the assembly method is simple, and heat loss caused by air gaps in the heating disc can be effectively eliminated.

The application discloses a kind of discrete series low distributed capacitance liquid cooling heat dissipation device and method, it belongs to electronic device heat dissipation technical field, heat dissipation device includes several heat dissipation units, the top of each heat dissipation unit is used to set power device, and two adjacent heat dissipation units are connected by cooling liquid pipeline;Each heat dissipation unit includes matrix and radiator, cooling liquid pipeline is through the inside of matrix, the top center of matrix is equipped with mounting hole, and mounting hole is equipped with radiator, and the lower half of radiator is inserted into the inside flow channel of cooling liquid pipeline, and the top of radiator is used to place power device.The application adopts discrete series heat dissipation unit structure, cooling liquid pipeline is through each unit matrix, and the lower half of radiator is inserted into the inside flow channel of pipeline, and each unit independently corresponds a power device.Solve the parasitic distributed capacitance problem caused by shared metal radiator, eliminate resonance loop, inhibit switching oscillation, reduce loss, ensure that heat dissipation is uniform and dynamic equalization, improve the stability and service life of high-voltage series module.

The present application relates to a kind of dual-mode heat conduction freeze-thaw system and freeze-thaw method, freeze-thaw system includes freeze-thaw cabin, at least two heat exchange plates are provided in cabin body, for placing bagged biological products between two adjacent heat exchange plates;Circulating medium system, including medium temperature control equipment and medium circulation pipe, medium temperature control equipment is used to provide liquid circulating medium and control the temperature of liquid circulating medium, medium temperature control equipment is connected with all heat exchange plates by medium circulation pipe;Air flow circulation system, including air flow circulation pipe, air flow circulation pipe is communicated with the both ends of the cabin body of freeze-thaw cabin and forms air flow circulation channel, air flow circulation driving device and air flow temperature control device are arranged in air flow circulation channel.The present application improves the thawing efficiency by the dual-mode heat conduction of direct contact heat conduction and air flow heat transfer, can restore sample from frozen state to liquid state in short time, reduce the influence of thawing process on biological product quality.

The utility model provides an ice mould structure of ice maker, including the front ice mould thin plate and rear ice mould thin plate of vertical arrangement and install between the front ice mould thin plate rear ice mould thin plate's evaporimeter, the front ice mould thin plate is towards the one end of rear ice mould thin plate interval arrangement has a plurality of first inner recess along vertical direction, the one end of rear ice mould thin plate interval arrangement has a plurality of second inner recess along vertical direction, a plurality of second inner recess and a plurality of first inner recess one to one correspondence, the evaporimeter includes a plurality of evaporation pipes, one side of evaporation pipe is in the first inner recess in the inlay, the other side of evaporation pipe is in the second inner recess in the inlay, the utility model provides an ice mould structure of ice maker, has overcome the defect that the ice mould structure structure is relatively complex and the ice making efficiency is lower.

This invention discloses a microchannel heat exchanger driven by an electrohydrodynamic (EHD) pump, characterized by comprising an EHD pump unit and a microchannel heat exchange unit; the EHD pump unit includes a pair of emitter / receiver electrodes, alternately arranged along the flow direction at the bottom of the microchannel, and several EHD pump units are connected in series to form a multi-stage electrode array; the microchannel heat exchange unit includes a jet port and an array-arranged microchannel; the dielectric liquid generated by the EHD pump is directly sprayed into the microchannel heat exchange region through the jet port; the EHD pump unit and the microchannel heat exchange unit are integrated in the same substrate, so that the electrode arrangement area and the heat exchange channel area form a continuous flow path.

The utility model discloses a liquid metal packaging structure, which comprises a sealing frame and a heat dissipation piece, the sealing frame comprises a frame, a first elastic sealing ring and a second elastic sealing ring, the middle area of the frame is provided with an accommodating area, a chip is arranged in the accommodating area, an annular groove is formed between the chip and the frame, the first elastic sealing ring is embedded in the bottom of the annular groove, and the second elastic sealing ring is embedded in the bottom of the annular groove. The second elastic sealing ring is arranged on the periphery of the frame in a surrounding mode, the heat dissipation piece is arranged on the end face of the frame in a covering mode, the heat dissipation piece, the chip, the first elastic sealing ring and the frame jointly define a sealed space used for being filled with liquid metal, and the frame comprises a plurality of holes and has compressibility. The liquid metal packaging structure provided by the utility model realizes efficient heat conduction and can reliably seal the liquid metal under pressurization.

The utility model discloses a calcining device for processing modified bentonite, which belongs to the technical field of bentonite calcining and comprises a calcining component, a stirring component is arranged at the top end of the calcining component, and a magnetic field gradient component is arranged outside the calcining component. The number of layers is 3-5, the flowing speed of cooling water is 2-5 L / min, the water temperature is lower than 25 DEG C, overheating is prevented, the outer layer is a permanent magnet array neodymium iron boron magnet arranged in the radial direction, a plurality of strip-shaped neodymium iron boron magnets are adopted and fixed to a shell through a stainless steel protection shell, the induction magnetic field intensity is changed by adjusting the current of an electromagnetic coil to be 0-10 A, and the induction magnetic field intensity is overlapped with a permanent magnet inherent magnetic field; according to the present invention, the magnetic medium such as Fe3O4 particles can obtain enough energy at the material inlet, the temperature can be rapidly increased to the target temperature such as 300-500 DEG C so as to achieve efficient heat transfer, and the process requirements such as the switching of the calcination curves of different bentonite varieties can be rapidly responded within 10 seconds by adjusting the current of the electromagnetic coil to 0-10 A;

The utility model relates to heat exchanger technical field especially relates to a kind of heat exchange device for high concentration material, comprising: heat exchange main part, its inside is equipped with heat exchange cavity, heat exchange main part is equipped with with heat exchange cavity intercommunication heat exchange medium inlet and heat exchange medium outlet;Multiple parallelly arranged ducts, the heat exchange cavity of heat exchange main part is penetrated, the both ends of duct form opening in flush with the end face position of heat exchange main part;A pair of end door, openably sealed and arranged in the both ends of heat exchange main part, and the upper portion of end door is provided with multiple material channels;When a pair of the end door are closed, the both ends of each material channel are connected with the opening of adjacent two ducts, so that all ducts in the heat exchange cavity are connected in series to form an S-shaped continuous high concentration material flow channel through all material channels on the pair of end door;When at least one end door is opened, the both ends of the material channel on the opened end door are separated from the opening of the corresponding side of the duct, and the opening of the side is open.

This invention provides a steam-stage drying and heat exchange device, belonging to the field of chemical equipment technology. It includes a primary steam utilization unit, a primary gas-liquid separator, a secondary steam utilization unit, a steam-hot water utilization unit, a secondary gas-liquid separator, and a steam condensate tank. The primary gas-liquid separator is connected to the exhaust port of the primary steam utilization unit via a pipeline. The secondary steam utilization unit is connected to the exhaust port of the primary gas-liquid separator via a pipeline. The steam-hot water utilization unit is connected to the drain port of the primary gas-liquid separator via a pipeline. The secondary gas-liquid separator is connected to the exhaust port of the secondary steam utilization unit via a pipeline. The steam condensate tank is connected to the steam-hot water utilization unit and the secondary gas-liquid separator via a pipeline, recovering primary and secondary hot water. The waste heat from the steam separated by the secondary gas-liquid separator is mixed with fresh steam to form a primary steam cycle. This device enables multiple uses of steam, improving steam utilization efficiency and reducing energy consumption.

The invention relates to a water vapor-organic working medium combined cycle power generation system which comprises a water vapor Rankine cycle and an organic working medium Rankine cycle, saturated steam generated by a boiler forms superheated steam through a superheater and drags a steam turbine generator to generate power, steam exhausted by a steam turbine is condensed in a condenser, and formed condensed water returns to the boiler through a water feeding pump and an economizer. A liquid organic working medium passes through an organic working medium booster pump, an organic working medium heater and a condenser to form organic working medium superheated steam, an organic working medium gas turbine generator set is dragged to generate electricity, and exhaust gas of an organic working medium gas turbine is cooled through the condenser to form the liquid organic working medium. And high-temperature flue gas generated in the fuel combustion or industrial production process is discharged after being cooled by the boiler body, the superheater, the economizer and the organic working medium heater, or is discharged from a chimney through purification equipment and an induced draft fan.

The application belongs to the technical field of energy storage equipment, and provides an energy storage heat exchange structure and method, which comprises a heat exchange structure monomer and a folding mechanism, and a plurality of heat exchange structure monomers are arranged in an array, each heat exchange structure monomer comprises a flow equalizing pipe, a medium pipe, a heat exchange pipe and a fin; the flow equalizing pipe is in communication with both ends of the heat exchange pipe, and the medium pipe is in communication with the flow equalizing pipe; a plurality of fins are installed on one surface of the heat exchange pipe, the folding mechanism is connected with all the heat exchange structure monomers, and is used for adjusting the spacing between adjacent heat exchange structure monomers. In the energy storage process, the spacing between the heat exchange structure monomers is reduced to extrude the solid phase change material, so that the solid phase change material is ensured to be in close contact with the heat exchange component, and the heat absorption capacity in the heat storage process is enhanced. In the heat release operation, the spacing between the heat exchange structure monomers is increased, which is beneficial to the heat convection of the liquid phase change material, improves the heat release efficiency, and makes the energy release of the phase change material more sufficient.

This invention discloses an internal and external dual-circulation airlift aerobic fermentation device, relating to the field of microbial aerobic fermentation. The device includes a gas conveying system, a fermenter, a circulating pump, a circulating cooler, a liquid distributor, a liquid-gas jet emulsification device, a gas distributor, a guide tube, an internal coil heat exchanger, and a circulating liquid suction device. This invention utilizes multiple centrally symmetrical liquid-gas jet emulsification devices within the fermenter, employing high-speed liquid flow to strongly shear and collide with the gas phase, breaking the air into micron-sized fine bubbles, thus significantly increasing the gas-liquid contact surface area. Simultaneously, the use of rotating jets and a guide tube design ensures thorough mixing of the gas and liquid phases during the jetting process, forming an innovative internal and external dual-circulation mode. This invention combines the advantages of traditional mechanical stirring and airlift fermenters, significantly improving the production capacity and oxygen utilization rate of the fermentation device while substantially reducing energy consumption.

The utility model provides a kind of inner tooth reinforced heat pipe with fixed structure, it is related to heat pipe field, this inner tooth reinforced heat pipe with fixed structure includes pipe body, the inside of pipe body is integrally formed with micro straight rib, the top of pipe body is fixedly connected with connecting pipe, the inside of connecting pipe is fixedly connected with two butt plates, the top of butt plate is equipped with through slot, the top of butt plate is equipped with two clamping grooves, the inside of connecting pipe is fixedly connected with mounting bracket, the bottom of mounting bracket is fixedly connected with helical fin This kind of inner tooth reinforced heat pipe with fixed structure improves heat exchange efficiency, realizes quick disassembly and maintenance at the same time, ensure that structure is stable and reliable, greatly expand heat dissipation area, strengthen convective heat transfer effect, realize bidirectional efficient heat transfer.

The invention discloses a plate type falling film evaporator. The evaporator comprises an evaporator tank body, a feed liquid evaporation plate device, a feed liquid distribution device, a feed liquid circulating device, a steam discharging device and a feeding pipeline, the feed liquid evaporation plate device comprises an evaporation plate mechanism, a fixed bracket, a descaling connecting frame and a descaling metal strip; a liquid film evaporation area is formed through the feed liquid evaporation plate device, uniform liquid distribution is achieved through the feed liquid distribution device, non-evaporated feed liquid flows back through the feed liquid circulation device, secondary steam is discharged through the steam discharging device, and raw materials are supplemented through the feeding pipeline; the thermal expansion coefficient of the descaling metal strip is larger than that of the evaporation plate mechanism, micro displacement is generated during heating or the descaling metal strip abuts against and slides to disturb the plate face, scale layer attachment is damaged, the scale layer is promoted to fall off, automatic reset is achieved during cooling, and self-adaptive descaling without external force driving is achieved. Passive scale removal is achieved through the thermal expansion difference, the heat transfer efficiency is improved, the operation period is prolonged, and the cleaning frequency and the maintenance cost are reduced.

The application discloses a kind of high gap change tolerance heat-conducting silicone gel and its preparation method and application, belong to heat-conducting material technical field, to different viscosity end vinyl polysiloxane and vinyl MQ silicone resin, with end containing hydrogen polysiloxane Construction composite crosslinking system, through the compounding of different viscosity end vinyl polysiloxane The entanglement state and flexibility of matrix molecular chain are regulated, while the system SiH / Vi molar ratio is accurately controlled in the adaptive range, to build uniform, dense and excellent flexibility three-dimensional crosslinking network;And be prepared by matching multi-particle-size gradation heat-conducting powder etc..The thermal conductivity of silicone gel is stable at 6W / (m·K) or more, and has excellent bonding strength and flexibility, and has excellent gap change tolerance.

The utility model provides a modularized replaceable concentrator heat dissipation structure, which belongs to the technical field of concentrators and comprises a main body provided with at least one heat pipe and at least one micro-channel. The two ends of the heat pipe are arranged near a heat source and at the position away from the heat source of the body respectively, the micro-channel is arranged near the heat end of the heat pipe, the heat pipe comprises an evaporation section, a condensation section and a heat insulation section, the evaporation section, the condensation section and the heat insulation section are connected through connecting pieces, the evaporation section is close to the heat source, and the condensation section is close to the heat source. The heat pipe comprises an evaporation section, a condensation section and a heat insulation section, the evaporation section is located at the position away from a heat source, the heat insulation section is located between the evaporation section and the condensation section, and the evaporation section, the condensation section and the heat insulation section of the heat pipe are of a continuous integrated structure. And the heat dissipation effect on a local hot spot area is not good.

The utility model relates to the technical field of tunnel furnace cooling sections, and discloses a heat exchange mechanism for reducing inlet air temperature of a tunnel furnace cooling section, which comprises a conveying belt, a cooling bin is fixedly connected to the upper surface of the conveying belt, a filtering bin is fixedly connected to the upper surface of the cooling bin, and a filtering assembly is arranged in the filtering bin. One end of the filtering bin is fixedly connected with a fan, one side of the outer wall of the filtering bin is fixedly connected with an air supply pipe, the inner wall of the cooling bin is fixedly connected with a flow guide plate, the interior of the flow guide plate is fixedly connected with an annular circulating conveying pipe, and one end of the annular circulating conveying pipe is fixedly connected with a cooling water tank. According to the cooling section of the tunnel furnace, fan driving is combined with the cooling water atomization spraying technology, air and atomized water are fully combined, the quality of dust in the air is effectively improved, the filtering efficiency is improved, then through secondary cooling of circulating cooling water, the efficient heat exchange and cooling effects are achieved, and the overall cooling efficiency of the cooling section of the tunnel furnace is remarkably improved.

The utility model discloses a device for recycling ammonia water of a synthetic ammonia device, and relates to the technical field of chemical production. The device comprises a storage bin, a feeding bin is arranged on one side of the storage bin, a filter screen is arranged on the bottom side of the connecting position of the feeding bin and the storage bin, a feeding pipe is communicated with the upper portion of one side of the feeding bin, and filtering filler is arranged in the feeding bin; the flow slowing plate is obliquely arranged between the inner bottom wall and the inner side wall of the storage bin; the spraying assembly is arranged on the side, close to the feeding bin, of the storage bin. Liquid drops are formed through spraying, a liquid film is formed on the flow slowing plate, the diffusion path resistance of ammonia molecules is reduced, the fixed barrel is heated through the electric heating rod, heat is transferred to ammonia water through radiation, meanwhile, the flow slowing plate and the electric heating plate directly heat the liquid film, a local high-temperature area is formed, the solubility of ammonia in a liquid phase is reduced, and ammonia gas is pushed to escape; efficient heat transfer and sufficient mixing between the ammonia water and a heat source are realized, and the escape rate of the ammonia gas is obviously improved.

The invention discloses an air-cooled ducted fan motor controller and an installation method thereof, the air-cooled ducted fan motor controller is arranged in an air-cooled duct, and the air-cooled ducted fan motor controller comprises: a heat dissipation shell, the interior of which is an accommodating space; a control board; the power main loop module and the control panel are arranged in the heat dissipation shell in the axial direction, and the controlled end of the power main loop module is connected to the output end of the control panel; the power main loop module comprises a plurality of power main loop units, and the heating end of each power main loop unit is welded and fixed to the inner wall of the heat dissipation shell. The heating end of the power main loop unit is directly fixed to the inner wall of the heat dissipation shell through the vacuum reflow soldering technology, efficient heat conduction of a heating component and a heat dissipation structure is achieved, the heat dissipation performance is further enhanced, heat resistance is greatly reduced, stable operation of the controller under the high-load working condition is guaranteed, and the service life of the controller is prolonged. And the heat dissipation requirements of a high-power motor and a controller can be met.

The utility model discloses an efficient cooling structure with a filtering function, a housing is arranged on the outer side of an incineration device, a cooling cavity is formed between the housing and the incineration device, an air inlet and an air outlet which are communicated with the cooling cavity are formed in the housing, a filtering assembly comprises at least one filtering unit, and each filtering unit comprises a frame, a filtering layer and a locking piece. The frame is arranged at the air inlet of the housing, the filter layer is connected to the frame through a locking piece and covers the air inlet, the cooling assembly comprises a cooling fan and an air pipe, one end of the air pipe is arranged at the air outlet of the housing, and the other end of the air pipe is connected with the cooling fan. Compared with the prior art, the low-temperature gas can continuously make contact with the incineration device, the cooling effect on the incineration device is guaranteed, the filter unit can prevent carbon filaments in the air from entering the cooling fan to affect normal operation of the cooling fan, the filter unit can be rapidly started, or the filter layer can be disassembled and assembled, and cleaning and replacement are convenient.

This utility model relates to the field of vacuum engineering, and more specifically to an ultra-high vacuum eutectic furnace for optoelectronic chip packaging. It includes: a heating furnace body with a vacuum chamber; a vacuum system, a two-stage vacuum unit consisting of a forestage mechanical pump and a main pump, used to provide an ultra-high vacuum environment for the vacuum chamber; a heating system disposed within the vacuum chamber, the heating system including a multi-layer assembled heating plate, the multi-layer assembled heating plate integrating heating tubes, cooling pipes, and a workstation positioning structure, the heating tubes and cooling pipes being embedded inside the multi-layer assembled heating plate; a heat insulation device, a multi-layer reflective heat insulation structure surrounding the heating system, the reflective heat insulation structure including a reflective layer facing the multi-layer assembled heating plate and an external water-cooled plate; and a reducing atmosphere supply unit connected to the vacuum chamber via multiple gas pipelines. This application achieves efficient, safe, and intelligent chip packaging under high vacuum conditions.

The utility model discloses a high-corrosion-resistance heat preservation jacket ball valve which comprises a ball valve ball body, ball valve pipelines are fixedly connected to the two sides of the ball valve ball body respectively, a control hand wheel is movably connected to the top of the ball valve ball body, and flanges are fixedly connected to the two sides of the two ball valve pipelines respectively. Heating shells are movably connected to the two sides of the ball valve ball body and the two ball valve pipelines respectively, a controller is fixedly connected to one side of each heating shell, a constant-temperature mechanism is fixedly connected to the interior of each heating shell, and two connecting strips are movably connected to the upper ends and the lower ends of the ball valve ball body and the two ball valve pipelines respectively; the internal temperature of the ball valve ball body and the ball valve pipeline is accurately regulated and controlled through heat conduction, the problems of crystallization, solidification or gasification and the like of fluid due to temperature fluctuation are prevented, it is ensured that the fluid always keeps good fluidity, smooth pipeline conveying is maintained, meanwhile, rapid assembly can be achieved, and the service life of the ball valve is prolonged. The structure is stable and high efficiency of heat conduction can be ensured.

The application provides a supercritical carbon dioxide heat exchange system and a waste heat recovery method, and belongs to the technical field of energy and thermal equipment. The system adopts a differential flow channel design combining a large-pitch channel on the flue gas side and a micro-channel on the carbon dioxide side, and integrates an online pulse soot blowing device taking preheated compressed air as a medium. Meanwhile, the heat exchange core adopts a nickel-based alloy material with smooth surface treatment to inhibit ash adhesion. The heat exchanger can be integrated in a supercritical CO2 Brayton cycle power generation system, soot blowing is triggered by intelligently monitoring pressure drop or temperature difference, and soot blowing is realized without stopping. The application fundamentally solves the problems of blockage and ash deposition of high-efficiency heat exchangers under the working condition of ash-containing flue gas, ensures that the waste heat recovery system can operate long-term, stably and efficiently, and significantly improves the energy utilization efficiency and system economy.

The invention provides a high-thermal-conductivity composite material and a preparation method thereof, and relates to the technical field of thermal conductive materials. Specifically, the high-thermal-conductivity composite material comprises a hollow closed shell and a plurality of stacked graphene film materials loaded in the closed shell, and the in-plane normal direction of the graphene film materials is perpendicular to the thermal conduction direction; and the closed shell is made of at least one of a diamond and silicon carbide composite material, a diamond and copper composite material, a ceramic material, pure copper or copper alloy. The composite high-thermal-conductivity graphene film material is brazed in the inner space of the closed material, so that the high-thermal-conductivity material is obtained, and the size, the structure, the thermal conductivity and other characteristics can be designed in a customized mode to meet the requirements of different application environments; the preparation process is simple, the efficiency is high, the application prospect is wide, and the material can be applied to many power devices or other fields with heat conduction requirements.

The present application belongs to the technical field of waste heat recovery and air purification, and discloses an intelligent heat recovery air conditioning fresh air machine. The machine body shell is internally formed with a heat exchange area and a cleaning area separated by a baffle. The flue gas pipeline heat exchange device includes double-row flue gas pipelines in the heat exchange area, spiral fins on the outer wall of the double-row flue gas pipelines, and an air blower. The double-row flue gas pipelines include upper and lower pipelines connected through the cleaning area to form a U-shaped flue. The ash removal device includes an openable access door and a steel brush that can be inserted into the pipeline to remove ash. The fresh air introduction device includes an air blower and a fresh air purification module, which is used to introduce outdoor air after heat exchange and purification into the room. The waste gas purification device and the intelligent constant temperature control device include a PLC controller and a temperature sensor, which are used to automatically adjust the speed of the air blower to maintain a constant temperature according to the indoor temperature. The present application solves the problem of difficult cleaning of ash accumulation in the flue of the existing equipment, and has the functions of efficient heat exchange, convenient maintenance, deep purification, and intelligent control.

The utility model relates to a kind of high-efficiency energy-saving heat exchange device, including mounting frame, the heat exchange module is cooperatively installed on the mounting frame, two ends of the heat exchange module are cooperatively installed with header, the top of heat exchange module is arranged with several fans, and single fan is supported by mounting frame;One header is used for the heat exchange fluid to be flowed into heat exchange module, when the heat exchange fluid flows through heat exchange module, fan rotation generates negative pressure air field, so that the air below heat exchange module flows from bottom to top, and then the fluid in heat exchange module is heat exchanged, and the fluid after heat exchange is flowed out by another header. By setting mounting frame, heat exchange core group and fan, a large amount of air can flow through the heat exchange core group in mounting frame, without cooling water, efficient convection heat exchange effect can be achieved;Meanwhile, its structure is compact, can improve the space utilization of ship, and is suitable for ocean-going ship.

The invention discloses a preparation method of a cold spraying gradient porous micro-channel liquid cooling plate, and relates to the technical field of thermal management devices. The invention can provide a low-cost and high-efficiency liquid cooling plate preparation technology which is adaptive to an aluminum alloy micro-channel, has no impurity residue and can accurately regulate and control a porous structure. The method comprises the steps that after the surface of a cold plate aluminum alloy matrix is pretreated, a target surface is obtained, and the pretreatment process sequentially comprises alkali washing treatment, acid pickling treatment and activating treatment; a cold spraying technology is adopted, metal powder of various particle size grades is sprayed to the target surface, so that side walls of various porous structures are formed on the target surface, runners are formed between the side walls, the hole diameter of the metal powder closer to the side wall of a heat source is smaller, and the porosity is larger; and connecting the cover body with the target surface and the upper part of each side wall in a sealing manner to form a closed flow channel, thereby obtaining the target liquid cooling plate.