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63results about How to "Inhibition of convective heat transfer" patented technology
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Full-vacuum horizontal liquefied natural gas (LNG) submerged pump pool
InactiveCN103711720AImprove the cooling effectLow running costPump componentsPumpsThermodynamicsIn vehicle
The invention discloses a full-vacuum horizontal liquefied natural gas (LNG) submerged pump pool. The full-vacuum horizontal LNG submerged pump pool comprises a pump pool body, a submerged pump pool and a support. A liquid outlet device which is arranged on the inner side of a pump pool cap is in a structure of high vacuum and heat insulation and an outer casing tube which is arranged on the outer side of the pump poop cap is fixedly connected with a vacuumized joint. The vacuumized joint is communicated with the liquid outlet device and the structure of high vacuum and heat insulation of the full-vacuum horizontal LNG submerged pump pool is formed by the vacuumized joint and a high-vacuum and heat-insulated interlayer between an outer cylinder and inner cylinder of the full-vacuum horizontal LNG submerged pump pool. According to this arrangement, all ways of heat leakage, such as convention, conduction and radiation can be eradicated so that good cold-insulated effect can be ensured. The rate of evaporation per day of LNG in the full-vacuum horizontal LNG submerged pump pool can be reduced by 21.5% to 31.5% compared with the vertical submerged pump pool in the prior art. The full-vacuum horizontal LNG submerged pump pool can be used for filling vehicles or transporting vehicle-mounted LNG, so as to greatly improve the economic benefit of LNG filling stations, LNG transportation and filling vehicles.
Owner:河南开元气体装备有限公司
Ultrathin fireproof aqueous coating and preparation method thereof
ActiveCN107254204ADelay the heating processEnhanced Fire DurabilityFireproof paintsAlkali metal silicate coatingsThermal insulationThermal radiation
The invention belongs to the field of aqueous coatings and in particular relates to an ultrathin fireproof aqueous coating and a preparation method thereof. When the ultrathin fireproof aqueous coating is prepared, a component A and a component B are added, the component A comprises an aerogel precursor, stepless powder and the like, and the component B is used as a binding agent. The aerogel precursor is adopted as a core raw material to prepare the fireproof aqueous coating; as an aerogel material is of a nano three-dimensional structure and has characteristics that a solid heat conduction route is effectively prolonged, gas convective heat transfer is inhibited and thermal radiation is reduced, an aerogel fireproof coating made of the aerogel material has a thermal insulation property which is incomparable by conventional materials; after being applied to a steel material and dried, the ultrathin fireproof aqueous coating provided by the invention is relatively high in mechanical strength, achieves a fireproof grade A1, additionally has relatively good advantages of being waterproof and low in cost, and provides a novel material for buildings, environmental protection and industrial energy conservation.
Owner:天津朗华睿博科技有限公司
Method for treating iron-containing dust of iron and steel plant by using cupola furnace
The invention discloses a method for treating iron-containing dust in an iron and steel plant by using a cupola furnace, belonging to the technical field of iron making. The method is characterized by comprising the following steps of: blending, uniformly mixing, briquetting and maintaining raw materials including dust in the iron and steel plant, a carbonaceous reducing agent, a bonder and an additive, and then putting the raw materials into the cupola furnace for iron making, wherein the carbon content of carbon-containing pellets prepared by briquetting raw materials of various iron-containing dust in the iron and steel plant is about 10%, the compressive strength of the maintained pellets is greater than 1000N per each pellet, and the pellets are distributed into the cupola furnace for iron making through a material distribution system; and preheating blast through a hot blast furnace, preheating the wind temperature from a normal temperature to about 500-1200 DEG C, and enriching oxygen by 1-5% in the blast to achieve the aims of improving the smelting strength, increasing the output and reducing the coke ratio. By adopting the method, the dust of the iron and steel plant can be recycled to achieve the aims of saving energy, reducing emission and reducing environmental pollution, so that the method has good economic and social benefits.
Owner:UNIV OF SCI & TECH BEIJING
Device and method for measuring thermal conductivity of porous powder material on basis of one-dimensional thermal conductive principle
InactiveCN106153672AImprove practicalityEasy to operateMaterial heat developmentMeasurement deviceHeat flow
The present invention provides a method for measuring the thermal conductivity of porous powder materials based on the principle of one-dimensional heat conduction. The powder sample to be measured is sandwiched between two samples with known thermal conductivity to form a sandwich structure and placed in a vacuum environment. The top of the sandwich provides a stable heat flow, and the thermocouple is welded equidistantly along the height direction on the surface of the known sample to measure the temperature, and the measured data is transmitted to the data acquisition instrument, and the temperature information obtained from the data acquisition instrument is analyzed by using LabVIEW software. The thermal conductivity of the sample to be tested can be calculated by curve fitting. The device is simple in structure, low in cost, simple in measurement method steps, and high in accuracy of measurement results, and can meet the thermal conductivity measurement requirements of powders with different particle sizes at different bulk densities.
Owner:SOUTHEAST UNIV
Low-temperature medium liquefaction device
ActiveCN102155610AInhibition of convective heat transferSmall temperature differenceContainer filling methodsContainer discharging methodsMechanical engineeringHeat exchanger
The invention relates to a low-temperature medium liquefaction device which comprises a Dewar and a heat exchange assembly, wherein the heat exchange assembly comprises a heat exchanger, a sleeve, a refrigerator cold head, a collector tube and a transmission tube; the upper end of the sleeve is hermetically and fixedly connected to the upper part of an inner cavity of the Dewar, and the lower end of the sleeve is hermetically and fixedly communicated with the collector tube; one end of the transmission tube is hermetically and fixedly communicated with the lower part of the collector tube, the middle part of the transmission tube is hermetically and fixedly connected with the Dewar, and the other end of the transmission tube is communicated to a cooled object outside the Dewar; the upper part of the refrigerator cold head is hermetically and fixedly connected with the Dewar, the lower part of the refrigerator cold head is arranged in the inner cavity of the sleeve, and the lower end of the refrigerator cold head is connected with the heat exchanger. The low-temperature medium liquefaction device disclosed by the invention has the advantages that: the heat transfer area at the low-temperature end of the refrigerator cold head is fully utilized, the heat leakage quantity is reduced, the working efficiency is improved, the energy resources are saved, the convenience for assembly and disassembly is achieved, and the manufacturing and maintaining cost is reduced.
Owner:中国船舶重工集团公司第七一二研究所
Composite thermal insulation structure of thermal battery and application of composite thermal insulation structure in thermal battery preparation
ActiveCN110544809AReduce radiative heat transferGood insulation effectDeferred-action cellsSecondary cellsThermal insulationGetter
The invention discloses a composite thermal insulation structure of a thermal battery and an application of the composite thermal insulation structure in the preparation of the thermal battery. The composite thermal insulation structure comprises a vacuum thermal insulation cavity, an aerogel thermal insulation layer, a reflection infrared radiation layer, a getter material and a battery cover plate, wherein a groove is formed in the side wall of the shell of the vacuum heat insulation cavity; the groove is formed in the upper end of the vacuum heat insulation cavity; the aerogel heat preservation layer is arranged in the groove and at the upper end of the vacuum heat insulation cavity; the reflection infrared radiation layer is arranged in the vacuum heat insulation cavity; the solution material is arranged at the bottom in the vacuum heat insulation cavity, and the battery cover plate is arranged at the upper ends of the vacuum heat insulation cavity and the aerogel heat insulation layer. The composite thermal insulation structure of the thermal battery provided by the invention can obviously delay the reduction of the temperature of an electric pile in the working process of thethermal battery and prolong the thermal life of the thermal battery.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
Light high-efficiency multilayer heat insulation material and preparation method thereof
ActiveCN110406135AAvoid falling powderImprove integritySynthetic resin layered productsVehicle componentsFiberThermal insulation
The invention relates to a light high-efficiency multilayer heat insulation material and a preparation method thereof. The method comprises the following steps: (1) impregnating a fiber preform with sol to prepare an aerogel composite material; (2) wrapping and sewing the aerogel composite material prepared in the step (1) by using fiber cloth to obtain a thermal insulation material preform; and (3) bonding a reflection film on the surface of the thermal insulation material preform obtained in the step (2) to prepare the light high-efficiency multilayer thermal insulation material. The invention also provides the light high-efficiency multilayer heat insulation material prepared by the preparation method, and the material can carry out high-efficiency heat insulation protection on a targetstructure at room temperature -500 DEG C. The light high-efficiency multilayer heat insulation material and the preparation method thereof have simple preparation process and low cost, and are expected to be popularized and applied in the fields of low-temperature heat insulation and civil heat insulation in aerospace.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
High speed burner for combustion chamber with film cooling type corrugated shell structure
ActiveCN102072488AExtended service lifeInhibition of convective heat transferGaseous fuel burnerCombustion chamberAir cavity
The invention discloses a high speed burner for a combustion chamber with a film cooling type corrugated shell structure, which relates to a high speed burner for a combustion chamber and aims to solve the technical problem of short service life of the combustion chamber shell of the conventional burner. The technical key points are that: the combustion chamber shell is a tapered shell of which the side wall is corrugated; the longitudinal section of the side wall of the combustion chamber shell has a corrugated structure; a plurality of gas film cooling holes are uniformly formed on the combustion chamber shell in a circumferential direction; the outer cover of a combustion chamber inner barrel is sleeved on the combustion chamber inner barrel; a combustion-supporting air sealed air cavity is formed between the outer cover of the combustion chamber inner barrel and the combustion chamber inner barrel; the outer cover of the combustion chamber shell is sleeved on the combustion chamber shell; a secondary air sealed air cavity is formed between the outer cover of the combustion chamber shell and the combustion chamber shell; a combustion-supporting air inlet is formed on the outer side wall of the outer over of the combustion chamber inner barrel; and a secondary air inlet is formed on the outer side wall of the outer cover of the combustion chamber shell. By adopting the corrugated tapered metal shell with the air film cooling holes, turbulence intensity can be increased, the heat exchange effect is improved, and the service life of the combustion chamber shell of the high speed burner is effectively prolonged.
Owner:HARBIN INST OF TECH
Variable oxygen partial pressure environment high temperature heat radiation performance test device, and method
ActiveCN108490022ATest accurateAvoid interferenceMaterial heat developmentControl mannerAtmospheric air
The invention discloses a variable oxygen partial pressure environment high temperature heat radiation performance test device, and a test method. According to the test method, a high temperature aerobic test environment with controllable temperature and oxygen partial pressure is established on the surface of a sample, so that accurate test on material high temperature heat radiation performanceat variable oxygen partial pressure environment is realized; a variable oxygen partial pressure high temperature gas purging system is used for forming oxygen / nitrogen mixed gas purging gas flow on the surface of the sample, realizing real-time controlling of the oxygen partial pressure and gas absolute pressure of the heating environment of the sample, avoiding influences of heat radiation signals emitted by polar molecules such as water and carbon dioxide in atmosphere at high temperature on test results, and ensuring heat radiation test accuracy; synchronous heating and constant temperaturecontrol of purging gas and the sample are adopted, so that heat convection effect between the sample surface and the purging gas is inhibited effectively, and accurate temperature control of the sample surface temperature is ensured.
Owner:AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
An energy-saving door lining brick for a coke oven
The invention relates to a door structure of a coke oven, and particularly relates to an energy-saving door lining brick for a coke oven. The door lining brick includes a lining brick main body, a glaze surface, a web and fastening members. The lining brick main body is provided with at least one concave type hollow structure, and is provided with fastening member connecting holes. The glaze surface is hung on the external surface, in contact with coke, of the lining brick main body. The wed covers the concave type hollow structure. The upper surface of the lining brick main body is in close contact with the web. The web and the lining brick main body are fastened through the fastening members so that the concave type hollow structure becomes a sealed cavity. The bottom of the web is coated with a coating. Heat-reflecting coating having high reflectivity is adopted by the coating. The lining brick is a fire-resistant precast block lining brick, and has a height of 500-2000 mm. The lining bricks are arranged into a row up and down and are tightly mounted inside an oven door frame. The lining brick can greatly reduce the present oven door thickness, reduce the temperature of the external wall of an oven door, reduce heat loss and save energy.
Owner:ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
Fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste
ActiveCN108530011AIncrease the use of thicknessImprove fire resistanceBuilding energyThermal insulation
The invention belongs to the technical field of energy-saving and environmentally friendly materials, and particularly relates to a fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste for building and industrial energy-saving heat insulation. An aerogel precursor is added in the heat-insulation paste during preparation, silica sol and S=silicone modified acrylicemulsion are used as binding agent, and thus, the fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste has heat-insulation performance which is incomparable to a traditional material. After the heat-insulation paste is dry, the mechanical strength of the heat-insulation paste is high, fireproof A 1 level is realized, moreover, the fireproof, waterproof and environmentally friendly silica aerogel heat-insulation paste has the advantages of good waterproofness and low cost, and a novel material is provided for building energy conservation, environmental protection and industrial energy conservation.
Owner:TIANJIN WEIYUAN TECH DEV CO LTD
Cryogenic storage tank with axial load bearing and limiting functions
PendingCN109630864AAvoid destructionReduce gapVessel mounting detailsVessel geometry/arrangement/sizeStress concentrationEngineering
The invention discloses a cryogenic storage tank with axial load bearing and limiting functions, and belongs to the field of cryogenic liquefied gas storage and transportation. The cryogenic storage tank comprises an inner container, an outer shell, a fixed part and a sliding part; the two sides of the inner container are axially erected in the outer shell through the fixed part and the sliding part; the spacing between the inner container and the outer shell, is not changed through the fixed part; the spacing between the inner container and the outer shell can be changed through the sliding part; and a covering sealing head enabling the fixed part to be sealed and a cover plate enabling the sliding part to be sealed are arranged on the two sides of the outer shell correspondingly. Due tothe cryogenic storage tank, damage to the inner container due to local stress concentration caused by low temperature shrinkage is avoided.
Owner:CHENGDU CRAER CRYOGENIC EQUIP
Vacuum insulating board made of fiber reinforced nanometer powder material and preparation method of vacuum insulating board
InactiveCN108468907ALarge specific surface areaImprove bindingThermal insulationPipe protection by thermal insulationGlass fiberCarbon fibers
The invention discloses a vacuum insulating board made of a fiber reinforced nanometer powder material and a preparation method of the vacuum insulating board. The vacuum insulating board is composedof three parts of a core plate, a barrier film, a getter and a vacuum protection surface layer; and the core material is formed by continuous reinforced fibers and a nanometer silicon dioxide powder material, wherein the continuous reinforced fibers are selected from one or two of micro-glassfibers and carbon fibers. The preparation method comprises the following steps of preparing nanometer silicon dioxide into a wet gel solution by adopting a sol-gel method, then soaking the continuous reinforced fibers with the wet gel solution, then performing ageing, solvent exchange, modification treatment and pH regulation, finally, performing ambient pressure drying to prepare a fiber reinforced nanometer powder composite cotton felt material, and then adopting a stainless steel sheet to perform coating with a tailless vacuum technology to obtain the vacuum insulating board. The material expands the application field of nanometer silicon dioxide and can be used as thermal and sound insulation materials, fire-fighting fireproof and heat insulation materials and the like.
Owner:宿迁空天新材料有限公司
Fluid transportation measuring device
ActiveCN106768113AReduce vibration and deformationReduce sensitivityMass flow measurement devicesVolume variation compensation/correction apparatusMeasurement deviceEngineering
The invention discloses a fluid transportation measuring device, comprising a heat conducting frame, which is installed at the surface of the base, and provided with a pair of vertical brackets, wherein the brackets are provided with laterally opened buckle slots; a U-shaped sensing pipe, of which both ends in a horizontal middle part are respectively embedded in the buckle slots of two brackets and fixed to each other, wherein both ends of the bending part are respectively downwards crossed through the base in a sealing manner from the base surface, the horizontal middle part of the sensing oil is coiled with a sensing screw group; a pressing plate, which is installed at the base surface, and used or pressing the end part of a flat cable wire and fixing the end part on the base surface, wherein the flat cable wire is connected with a wiring head of the sensing screw group through a wiring terminal with an exposed end part; an outer cover, which is installed at the base surface, and used for covering the sensing pipe, the heat conducting frame and the pressing plate; the inner part of the outer cover is provided with a heat insulation type avoiding groove corresponding to appearances of the sensing pipe, the heat conducting frame, and the pressing plate. The fluid transportation measuring device can reduce the null shift, improve the anti-disturbing ability, reduce the sensitivity to the installing position, and realize the fluid transportation measurement with high precision and high response.
Owner:BEIJING SEVENSTAR FLOW CO LTD
Biological sample liquid nitrogen tank refrigerator
ActiveCN113720066AEnsure safetySafe low temperature environmentLighting and heating apparatusInsulation for cooling apparatusInsulation layerIcebox
The invention discloses a biological sample liquid nitrogen tank refrigerator which comprises a liquid nitrogen tank refrigerator body and two compressor refrigerating systems. The liquid nitrogen tank refrigerator body comprises an inner tank body, an outer tank body and a vacuum interlayer located between the inner tank body and the outer tank body; the liquid nitrogen tank refrigerator body further comprises a liquid nitrogen filling pipe for filling liquid nitrogen into the inner tank body; and each compressor refrigerating system comprises a condenser, a compressor, a condensation evaporator, a throttling device and an evaporative cooling coil, wherein the two evaporative cooling coils are wound on the inner wall of the inner tank body in a staggered mode. According to the biological sample liquid nitrogen tank refrigerator, liquid nitrogen refrigeration and mechanical compression refrigeration are combined, a vacuum heat insulation layer is used for heat insulation, and therefore the biological sample liquid nitrogen tank refrigerator has the advantages of being good in energy-saving effect and capable of ensuring safety of stored biological samples, the use mode is flexible, and application prospects are wide.
Owner:金西盟(天津)人工智能有限责任公司
Solar flat-plate collector
InactiveCN106338148AInhibition of convective heat transferInhibition of heat transferSolar heating energySolar heat devicesEvaporationCollector device
The invention relates to a solar flat-plate collector. A base plate is arranged at the opposite position of a cover plate, a support is arranged between the cover plate and the base plate, a cavity is formed by the support, the cover plate and the base plate, a header is arranged above the cavity, and a heating plate coated with a solar selective absorbing coating is installed in the cavity; a first insulating layer is arranged between one face of the heating plate and the base plate, the other face of the heating device is provided with a plurality of parallel copper heat pipes, evaporation sections of the copper heat pipes are connected with the heating plate, condensation sections of the copper heat pipes are arranged in the header, and the condensation sections of the copper heat pipes are in sufficient contact with pipe walls of runners; and the runners penetrate a cavity of the header, a second insulating layer is arranged in a gap in the cavity of the header, the cover plate is made of vacuum glass and hollow glass, and one face or two faces of the inner surface of the glass is / are plated with an infrared reflection film. The solar flat-plate collector is provided and relates to the field of solar equipment, the heat collecting efficiency of the collector can be improved, and the problems that scale and ice are prone to being formed in the pipes, and frosting is prone to generation on the cover plate are solved.
Owner:HUBEI XISHIDUO SOLAR ENERGY TECH
Energy-saving support used for heat transmission pipeline
InactiveCN104455739AReduce deliveryReduce contact areaPipe supportsThermal insulationHeat transmissionEngineering
The invention relates to an energy-saving support used for a heat transmission pipeline. The energy-saving support comprises a support body and a liner cylinder arranged on the inner side of the support body, the section of the support body is in a ripple shape, wherein ripples fluctuate in the radial direction and are evenly distributed in the circumferential direction, the crest and the trough of each ripple are an arched curved surface convex outwards and an arched curved surface concave inwards respectively, the vertexes of the curved surfaces, concave inwards, of the troughs make contact with the liner cylinder, and after the support body and the liner cylinder are assembled, the vertexes of the curved surfaces, convex outwards, of the crests make contact with an outer sleeve of the heat transmission pipeline. The energy-saving support has the advantages of being good in technological property, convenient to transport and install and small in contact area, the heat transmission path is lengthened, the heat dissipation loss of the support is greatly reduced, the temperature of the tail end of the support is lowered substantially, and energy is saved.
Owner:AEROSUN CORP
Straight-through type single-tube solar absorber with semielliptical glass cover
ActiveCN105180467AReduce flowReduce light and heat lossSolar heating energySolar heat devicesInsulation layerGlass cover
The invention discloses a straight-through type single-tube solar absorber with a semielliptical glass cover. The straight-through type single-tube solar absorber comprises an absorption tube and the glass cover located below the absorption tube. The absorption tube is a straight-through type round metal tube. The upper half circumference of the absorption tube is wrapped by an annular heat insulation layer with a breaking gap in the lower portion, and the heat insulation layer coincides with the circle center of the absorption tube. The lower half circumference of the absorption tube is exposed out of the heat insulation layer. The glass cover is a hollow semielliptical cover, and the side, exposed out of the heat insulation layer from the absorption tube, of the glass cover is sleeved and buckled with the heat insulation layer. According to the absorber, the collecting degree of reflection light is increased through refraction of the semielliptical glass cover, meanwhile, the amount of light projected to the heat insulation layer can be lowered, and the photo-thermal utilization efficiency of solar energy is greatly improved.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
Silica aerogel fireproof, waterproof, environment-friendly thermal insulation paste and preparation method thereof
The invention belongs to the technical field of energy-saving and environment-friendly materials, and particularly relates to a building, silica aerogel fireproof, waterproof, environment-friendly thermal insulation paste for industrial energy conservation and thermal insulation and a preparation method of the paste. According to the thermal insulation paste, an aerogel precursor is added during preparation, silicon sol and organic silicon modified acrylic emulsion serve as binding agents, and the paste has the incomparable heat insulation performance compared with a traditional material. After the thermal insulation paste is dried, the high mechanical strength is achieved, and the fireproof A1 grade is achieved; besides, the paste has relatively good waterproof performance and low cost, and a novel material is provided for building energy conservation, environmental protection and industrial energy conservation.
Owner:天津朗华睿博科技有限公司
Composite coating for downhole oil pipe and applying method thereof
InactiveCN111036524AStrong waterproof, moisture-resistant, wear-resistant and anti-corrosion propertiesGood waterproof, moisture-resistant, wear-resistant and anti-corrosion performanceFireproof paintsLiquid surface applicatorsCelluloseFirming agent
The invention discloses a composite coating for a downhole oil pipe and an applying method thereof, and belongs to the technical field of oil field oil production. The composite coating for the downhole oil pipe comprises epoxy resin primer, an aerogel composite coating intermediate heat preservation layer and glass flake paint finish paint; an aerogel composite coating comprises, by weight, 10-20parts of silicon dioxide aerogel, 60-120 parts of a self-crosslinking acrylic emulsion, 15-30 parts of glass wool, 5-15 parts of titanium dioxide, 3-10 parts of hydroxyethyl cellulose, 10-30 parts ofsodium polyacrylate and 10-20 parts of ammonium hydroxide; and glass flake paint comprises, by weight, 40-50 parts of modified epoxy resin, 30-35 parts of glass flakes, 3-5 parts of a silane couplingagent, 5-10 parts of a diluent, 5-10 parts of alundum powder and 10-20 parts of an epoxy hardener. According to the composite coating for the downhole oil pipe, the problems that when an aerogel coating is applied to the downhole oil pipe, moisture absorbing and cracking under the influence of water are prone to occurring are solved.
Owner:PETROCHINA CO LTD
Device for insulating side wall of directional solidified steel ingot
InactiveCN102240797AReduce distanceInhibition of convective heat transferThermal insulationMetallurgy
The invention discloses a device for insulating a side wall of a directional solidified steel ingot. The device is characterized by comprising a water cooling base plate, an insulating material layer, a high-strength heat-resisting material layer, a heat-insulation air layer, a fire-resistant plate and a high-thermal-insulation heat-resisting material layer, wherein the water cooling base plate is arranged at the bottom of the device, the insulating material layer is covered on the surface of molten steel, the high-strength heat-resisting material layer is contacted with the molten steel and is positioned inside the device, the heat-insulation air layer is arranged in the middle of the device, the fire-resistant plate is inserted into the heat-insulation air layer, the high-thermal-insulation heat-resisting material layer is arranged at the outer side and upper surface of the device, and the whole side wall insulating device is sealed. The outer surface of the high-strength heat-resisting material layer and the inner surface of the high-thermal-insulation heat-resisting material layer are inlaid or coated with a low-blackness substance, and the surface of the fire-resistant plate is also inlaid or coated with the low blackness substance. By adopting the device disclosed by the invention, the heat transfer on the side wall can be obviously reduced, the side wall of a casting ingot is maintained to be in an adiabatic state, the formation rate of columnar crystals is improved, and the quality of a cast ingot is improved.
Owner:UNIV OF SCI & TECH LIAONING
Disc Stirling engine heat collector port heat shield device and application thereof in solar power generation
ActiveCN104390373AInhibition of convective heat transferReduce lossSolar heating energyFrom solar energyButt jointCollector device
The invention relates to a disc Stirling engine heat collector port heat shield device and application thereof in solar power generation. The disc Stirling engine heat collector port heat shield device comprises a cylindrical heat collection cavity formed by heat-insulation components, wherein the bottom of the heat collection cavity is sealed; the inner side of the bottom is provided with a heat absorption component; the mouth of the heat collection cavity is formed by the butt joint of the small ports of two cone-shaped bodies; a big port of the cone-shaped body on the inner side is connected with the heat collection cavity; the junction of the small ports of the two cone-shaped bodies is provided with a round heat shield to seal the heat collection cavity, wherein the round heat shield is used for reflecting sunlight which enters the heat collection cavity but is not absorbed, and the convective heat exchange of a heat collector and atmospheric environment is inhibited. The reflection to the radiation energy of the heat collector is effectively enhanced, the convective heat exchange of the heat collector and atmospheric environment is completely inhibited due to the heat shield, lost heat from the heat collector port to external space can be effectively reduced, and the optothermal conversion efficiency of the engine heat collector is improved.
Owner:AECC AVIATION POWER CO LTD
Hierarchical pore inorganic composite polyphenyl non-combustible thermal insulation material and preparation method thereof
The invention discloses a hierarchical pore inorganic composite polyphenyl non-combustible thermal insulation material and a preparation method thereof, and relates to the technical field of buildingthermal insulation materials, and the hierarchical pore inorganic composite polyphenyl non-combustible thermal insulation material comprises the following raw materials by weight: 100 parts of a hydraulic silicate gel material, 8-15 parts of hierarchical pore polystyrene foam particles, 0.5-5 part of a flame retardant, 0.5-2 part of hydroxypropyl methyl cellulose, 1-3 parts of a waterproof agent,and a proper amount of water. Inorganic and organic heat preservation materials are compounded, heat insulation and fire prevention are conducted, then the flame retardant, hydroxypropyl methyl cellulose and the waterproof agent are added, the obtained heat preservation material is light in dead weight, small in heat conductivity coefficient, capable of achieving heat insulation and heat preservation and good in strength, and various outer wall non-combustible fireproof heat preservation requirements can be met.
Owner:ANHUI EMINENT BUILDING MATERIALS TECH
Low-temperature medium liquefaction device
ActiveCN102155610BInhibition of convective heat transferSmall temperature differenceContainer filling methodsContainer discharging methodsEngineeringMechanical engineering
Owner:中国船舶重工集团公司第七一二研究所
Rolling press treating method for surface protruding on metal material
The treating process of metal material surface with uneven roller includes the following steps: making the rolling mold with uneven surface contact with the workpiece to be surface treated, making the rolling mold and the workpiece move relatively to produce plastic deformation in the surface of the workpiece repeatedly. The said treating process may be completed with available apparatus and technology in high reliability and controllable technological parameters. By means of control technological conditions, the present invention can obtain metal material with nanometer surface or self-alloying surface.
Owner:周柏森 +1
Solar water-working-medium cavity-type heat absorber
ActiveCN104964461AReduce radiative heat lossUniform heat fluxSolar heating energySolar heat devicesPlate heat exchangerSolar water
The invention discloses a solar water-working-medium cavity-type heat absorber, and belongs to the technical field of light-condensation solar thermal power generation devices. The heat absorber comprises a gas supplying unit, a heat exchanging unit and a cavity. The gas supplying unit comprises a CO2 gas storage tank connected with the cavity, a gas pump is further arranged on a pipeline connected with the cavity, a first valve is arranged at an exhausting opening of the CO2 gas storage tank, and a second valve is arranged at a gas inlet of the cavity. The heat exchanging unit comprises a heat exchanger connected with the cavity, the heat exchanger is communicated with an exhausting pipeline of the CO2 gas storage tank through a bypass pipeline, and a bypass valve is arranged on the bypass pipeline. An air discharging valve and a CO2 gas discharging valve are arranged at the top of the cavity. Greenhouse gas is sufficiently utilized, a novel utilization mode which saves energy and reduces emissions is adopted, and the heat absorber is reasonable in structural arrangement and easy to obtain and has broad application prospects.
Owner:XI AN JIAOTONG UNIV
Wood-grain-like ceramic tile with wood temperature touch sense and preparation method of wood-grain-like ceramic tile
ActiveCN114163261AInhibition of solid-state heat conduction and gas convection heat transferReduce heat transferCeramic tilesWood grain
The invention belongs to the technical field of architectural ceramics, and particularly discloses a wood-grain-like ceramic tile with wood temperature touch and a preparation method of the wood-grain-like ceramic tile. The wood grain-like ceramic tile comprises a green body layer, a low-heat-conduction layer, a cover glaze layer, a wood grain glaze layer and a transparent glaze layer from bottom to top, wherein the low-heat-conduction layer is prepared from the following raw materials: ceramic powder, inorganic fibers and nano Al2O3-SiO2 aerogel powder. The preparation method comprises the following steps: taking raw materials of the green body layer, and carrying out dry pressing molding to obtain the green body layer; applying raw materials of a low-heat-conduction layer on the upper surface of the blank body layer, and performing dry pressing to obtain a low-heat-conduction blank body; and sequentially applying cover glaze, wood grain glaze and transparent glaze on the low-thermal-conductivity green body, and firing to obtain the wood grain-like ceramic tile. The low-heat-conduction layer is arranged on the surface of the green body layer, so that the ceramic tile has the temperature touch feeling of wood; the surface glaze layer, the wood grain glaze layer and the transparent glaze layer are sequentially arranged on the upper surface of the low-heat-conduction layer, so that the wood grain imitation effect is achieved, and the wood grain imitation ceramic tile with the wood temperature touch feeling is obtained.
Owner:FOSHAN OCEANO CERAMICS
Anti-frosting low-temperature surface source blackbody
PendingCN113432730AImprove temperature stabilityImprove temperature accuracyRadiation pyrometryTemperature controlEngineering
The invention discloses an anti-frosting low-temperature surface source blackbody, which comprises a shell and a blackbody plate, a semiconductor cooler, a temperature control assembly, a heat dissipation assembly and a power module, which are arranged in the shell. The semiconductor cooler is electrically connected with the temperature control assembly, and the temperature control assembly and the heat dissipation assembly are both electrically connected with the power module; an anti-frosting assembly installed on the shell is arranged at the front end of the black body plate, and the temperature control assembly is suitable for being connected with an external computer and conducting calculation according to PID parameters to adjust the power of the semiconductor cooler. The low-temperature surface source blackbody can be effectively protected, surface frosting is avoided, and meanwhile the temperature accuracy and stability of the low-temperature surface source black body are improved.
Owner:CHANGZHOU INST OF OPTOELECTRONICS TECH
Heat preservation device for ice cream maker and ice cream assembly
The invention discloses a heat preservation device for an ice cream maker and an ice cream assembly. The heat preservation device comprises a base, a heat preservation sleeve and a water scraping ring, wherein a water collecting structure is arranged on the base and is used for allowing the ice cream maker to be placed and collecting condensate water of the ice cream maker; the heat preservation sleeve is connected to the base, and a containing cavity used for containing the ice cream maker is defined by the heat preservation sleeve and the base; the water scraping ring is arranged on the inner wall of the heat preservation sleeve, and is used for abutting against the outer wall of the ice cream maker to scrape water; and when the ice cream maker is located in the containing cavity, a heatpreservation cavity is defined by the outer wall of the ice cream maker, the water scraping ring, the inner wall of the heat preservation sleeve and the base. According to the heat preservation device, the heat preservation sleeve is arranged on the base, the heat preservation sleeve can achieve the effect of heat preservation while the base collects condensate water, the use efficiency of cold energy is improved, and besides, generation of the condensate water can be reduced.
Owner:GREE ELECTRIC APPLIANCES INC
Full vacuum horizontal lng submersible pump pool
InactiveCN103711720BImprove the cooling effectLow running costPump componentsPumpsIn vehiclePumping vacuum
Owner:河南开元气体装备有限公司
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