283results about How to "Effective heat transfer" patented technology

The invention discloses a heat-conducting wire cable electric-insulation material or sheath material which comprises the following components in parts by weight: 100 parts of ethylene and copolymer thereof and / or ethylene propylene diene monomer, 0-25 parts of compatilizer, 0-280 parts of flame retardant, 0.3-8 parts of antioxidant, 0.5-6 parts of lubricant, 0.01-10 parts of crosslinking assistant, 0-30 parts of polymer elastomer, 0-8 parts of coupling agent, 0-12 parts of color master batch and 1-35 parts of heat-conducting material. The heat-conducting wire cable electric-insulation material or sheath material has excellent heat conductivity and electric insulativity; and the cross network formed by piling the heat conducting material, the ethylene and copolymer thereof and other components can effectively perform heat conduction, so that the heat conductivity coefficient is up to 3.305-4.867 w / m.k, and the volume resistivity is 10<14> ohm*cm, thereby ensuring the electric-insulation effect and heat-conducting effect of the wire cable and the, and further ensuring the normal operation of the cable.

An infrared sensor of this invention is characterized by including a support member including a support film and a substrate that supports the support film, a polysilicon film which ranges from above a concavity to above the substrate, SiO2 which is formed on the polysilicon film and has a first junction hole above the concavity and a second junction hole above the substrate, an aluminum film which is connected to the polysilicon film through the first junction hole and connected to an adjacent polysilicon film through the second junction hole, and a heat absorption layer formed above the concavity to cover a portion above the first junction hole, wherein the aluminum film is stacked on the corresponding polysilicon film via the SiO2 above the concavity.

The invention provides a method and a device for self-recovery current limiting and circuit breaking by using conductive fluid and magnetic fluid, belonging to the electric and automatic control field. The device comprises a main body and an auxiliary body; an encapsulated casing of the main body forms a closed cavity with an outside solid electrode terminal; the cavity is filled with conductive fluid and magnetic fluid hierarchically; when the number of the cavity is more than one, the cavity is internally provided with clapboards which is provided with inside solid electrode terminals; the cavity volume is divided by the clapboards equally, and each cavity is filled with the conductive fluid and the magnetic fluid hierarchically; the auxiliary body comprises a magnetic field generating device and a temperature regulating device; the main body part and the magnetic field generating device are accessed into a controlled circuit; when fault current exists in the controlled circuit, themagnetic field generating device generates large enough gradient magnetic field to rapidly separate the magnetic fluid from the solid electrode terminal so as to realize rapid breaking of circuits. Asthe response time is in a millisecond level, the invention can effectively protect security of electronic equipment and solves the problems such as contact burning, difficult breaking and the like, and the device has the self-recovery function.

The invention discloses a special compound heat conducting powder for a heat conducting and insulating power cable protective casing, and a production process thereof. The power comprises the following components in percentage by weight according to the formula: 40-60 percent of alumina of different particle sizes, 5-25 percent of nano silicon carbide, 3-15 percent of nano aluminum nitride, 2-12 percent of nano zinc oxide, 1-10 percent of nano nano magnesia, 4-10 percent of nano silicon nitride, and 1-8 percent of nano boron nitride. The production process is that the components are subjected to surface actification processing and then to compounding. The formula has the main characteristics that the raw materials are easy to obtain, the produced compound heat conducting powder is high in thermal conduction, and the additional amount is small. The formula adopted by the invention can be applied to heat dissipation protective casings for various buried construction cables.

Nowadays in aircraft so-called on-board inert gas generation systems (OBIGGS) are used to generate inert gases, to which OBIGGS cooled bleed air of engines or auxiliary power units is fed. According to an embodiment of the present invention, an air-cooling device for an OBIGGS system in an aircraft is proposed that comprise a bleed position (1). By way of the bleed position (1), cooling air from an air conditioning unit (4) on board the aircraft can be bled, which cooling air can subsequently be used for cooling supply air (18) for the OBIGGS system. Thus, there is no need for an additionalram-air inlet channel for cooling the supply air. Air resistance and weight are thus reduced, and the stability of the primary structure is enhanced.

An L.E.D. light emitting assembly (20) includes a heat sink (50) defined by independent elongated sections (52) upwardly from a base (26) in parallel relationship. L.E.D.s (72) are disposed on a mounting surface (60) and fins (64) are disposed on a heat transfer surface (62) of the elongated sections (52). The elongated sections (52) and base (26) are pivotably connected at a hinge (86). The hinge (86) can include a spring (102). A spreader (90) can pivot the elongated sections (52) about the hinge (86). A flexible stop (106) with a resilient tip (110) is attached to top ends (58) of the elongated sections (52). The elongated sections (52) are held together by a retainer (88), such as a band (104), and inserted through a narrow opening (22) of a globe (24). A deployment mechanism (84) moves the elongated sections (52) to a non-parallel position to fill the globe (24).

A buffered optical fibre includes an optical waveguide, at least one exterior coating surrounding the optical waveguide and a buffer coating surrounding the at least one exterior coating, wherein the buffer coating is a tight buffer coating made of a material having a density of at least about 1.2 Kg / dm3, a thermal conductivity of at least about 0.4 W / m·K and includes a polymeric matrix and an inorganic filler.

The invention discloses a heat-shrinkable heat-conducting cable accessory, comprising the following components in parts by weight: 100 parts of ethylene and copolymer thereof, 0-25 parts of fire retardant, 0-80 parts of packing, 0.5-2.5 parts of light stabilizer, 0-6 parts of antioxidant, 1.5-6 parts of lubricating agent, 0-10 parts of coloring agent, 1-8 parts of coupling agent, 0-10 parts of modifier, 0-5 parts of crosslinking agent and 1-30 parts of heat-conducting material. The heat-shrinkable heat-conducting cable accessory disclosed by the invention has good thermal conductivity and insulativity, especially the campsite heat-conducting material and other components such as ethylene and the copolymer thereof and the like are stacked to form a cross network, so that effective heat conduction can be carried out, the heat-conducting coefficient can be up to 3.305-4.867w / m.k, the volume resistivity can be ensured at 10<15>ohm*cm, the insulating effect of the cable accessory is ensured, and the heat-conducting effect of the cable accessory can also be ensured, so as to ensure normal operation of the cable.

A resin board is fixed to a plate member made of metal by a fixing member. A semi-conductor module and a capacitor are mounted on a first surface of the resin board. A first ground pattern is formed on the fist surface and electrically connected to the plate member by means of the fixing member. A connector is also provided on the first surface such that the first ground pattern is interposed between the semi-conductor module and the connector. The heat from the semi-conductor module and the capacitor is transmitted to the plate member via the first ground pattern and the fixing member.

The invention relates to a fuel-cell power generation system, and in particular relates to a high-power proton exchange membrane fuel-cell power generation system in an underwater isolated air environment. The fuel-cell power generation system comprises a proton exchange membrane fuel cell module, a hydrogen and oxygen storage device, a direct current (DC) / DC conversion unit, a monitoring unit, a heat exchanger, a water tank, a water pump, a valve and a circulating water pipe; a hot water circulating branch comprises a thermostatic hot water tank, a circulating hot water conveying water pump, a proton exchange membrane fuel cell module, a hydrogen storage device and a heat exchanger; a cold water circulating branch comprises a cold water tank, a circulating cold water conveying water pump, a DC / DC conversion unit and an oxygen storage device; a hot and cold water balancing branch comprises a thermostatic hot water tank, a hot water control valve, a balanced hot water conveying water pump, a cold water tank, a cold water control valve and a balanced cold water conveying water pump; one end of the monitoring unit is connected with the thermostatic hot water tank, and the other end of the monitoring unit is connected with the cold water tank. The fuel-cell power generation system has the advantages that the system does not depend on outside air, is safe and reliable, the heat exchange process inside the system is simple and direct, and the heat cycle efficiency is high.

Optical assemblies of the type supported on an optical bench and comprising a one or more components such as lasers, lenses, filters, isolators and waveguides, are sensitive to movement variation. One of the causes of movement is temperature tracking. Previously, thermo-electric coolers have been used to maintain the top-surface temperature of an optical bench within a certain range. However, although thermo-electric coolers are operable to maintain optical bench temperature they are themselves still sensitive to temperature tracking and can deform. Because an optical bench is typically supported on the top surface of a thermo-electric cooler this leads to deformation of the optical bench itself and as a result performance of the optical assembly is affected. An improved design of thermo-electric cooler is described where the top surface of the cooler is divided into separate regions, each having a neutral region in which deformation is minimal. A thermally conductive sheet is placed over each of these regions such that only one temperature monitor is required. Optical components are then supported over the thermally conductive sheet in the neutral regions.

The invention discloses chemical industry waste gas treatment equipment, which comprises a box body, wherein the lower end of the left side of the box body is provided with a gas inlet pipe; a filtering cavity is arranged at the right side of the gas inlet pipe; a first connecting pipe is arranged at the upper side of the filtering cavity; a burning cavity is arranged at the upper side of the first connecting pipe; a second connecting pipe is arranged at the right side of the burning cavity; a condensation cavity is arranged at the left side of the upper end of the second connecting pipe; the left end and the right end of the upper side of the condensation cavity are provided with circulation pipes; a water storage cavity is arranged at the upper side of each circulation pipe; an acid alkaline detector is arranged at the right side of the condensation cavity; each of the left side and the right side of the lower end of the second connecting pipe is provided with a third connecting pipe; the lower sides of the third connecting pipes are respectively provided with an acid solution storage cavity and an alkaline solution storage cavity; the upper side of each of the acid solution storage cavity and the alkaline solution storage cavity is provided with a gas outlet pipe; the upper sides of the gas outlet pipes are connected with a fourth connecting pipe; the right side of the fourth connecting pipe is provided with a purification cavity; the upper side of the purification cavity is provided with an exhaust pipe. The chemical industry waste gas treatment equipment has the advantages that various kinds of harmful gases and suspended particles in waste gas can be effectively removed, so that the cleanness of exhausted gas is ensured.

A modular thermal panel can include a heat exchanger having connected top and bottom plates with channels formed there between for receiving a heat exchange fluid. An architectural tile (e.g., a paver, stone, acoustic tile, or any other architectural element) can rest on the top of the modular thermal panel, while an insulator panel is positioned below the modular thermal panel. The heat exchanger can transfer heat between the architectural tile and the heat exchange fluid to either cool or heat the architectural panel. Additional implementations include heat transfer systems including such modular thermal panels, and methods of collecting and utilizing thermal energy using such modular thermal panels.

The invention relates to an automatic high-efficiency energy-saving purification system for industrial volatilizable organic pollutants, which is characterized in that: (1) both opposite side walls of an active carbon bed body of an adsorption bed are set into side walls with hollow structures, an active carbon clapboard is set into an active carbon clapboard with a hollow structure, the active carbon clapboard with the hollow structure is communicated with the side walls with the hollow structures, and the two side walls with the hollow structures are respectively provided with a hot air inlet and a hot air outlet; and (2) a catalytic combustion bed is connected with a plate-type heat exchanger, and the plate-type heat exchanger is connected with the hot air inlets on the side walls withthe hollow structures of the adsorption bed through an adsorption bed heating fan. The automatic high-efficiency energy-saving purification system for the for industrial volatilizable organic pollutants has a simple and reasonable structure, can effectively reduce energy consumption, improve the purifying rate, prolong the service life of a catalyst, shorten the desorption process time, improve the purifying efficiency and reduce the operating cost, and is safe and reliable.

The present invention provides an umbrella surface composite film and a preparation method thereof, wherein the umbrella surface composite film comprises a polyurethane film, a fluorescent coating and a polypropylene film, and the polypropylene film is filled with titanium dioxide coated hollow glass micro-beads. Compared with the umbrella surface composite film in the prior art, the umbrella surface composite film of the present invention has the following characteristics that TiO2 is wrapped on the surface of the hollow glass micro-beads so as to provide characteristics of good near-infrared radiation reflection and heat conduction prevention and effectively reflect the thermal radiation of sunlight so as to block heat transfer, such that the fluorescent umbrella formed from the prepared umbrella surface composite film has characteristics of good infrared radiation reflection and good thermal insulation effect. Accordingly the present invention further provides the fluorescent umbrella formed from the umbrella surface composite film, wherein the fluorescent umbrella has characteristics of good infrared radiation reflection and good thermal insulation effect.

The invention relates to a supported iron-based Fischer-Tropsch catalyst. The supported iron-based Fischer-Tropsch catalyst contains a spherical mesoporous carbon support, an active component iron located on the support and an optional catalyst promoter, wherein the specific surface area of the spherical mesoporous carbon support is 500-1000 m<2> / g, pore volume is 1.5-3.5 cm<3> / g, and average porediameter is 9-30 nm. According to the catalyst, spherical mesoporous carbon with high pore volume and large pore diameter is taken as the support, not only can high loading capacity of iron be realized, but also when the prepared catalyst is applied to the Fischer-Tropsch reaction, high Fischer-Tropsch reactivity and high productivity can be obtained, and particularly, CO conversion rate is remarkably increased and hydrocarbon productivity is improved. The invention further relates to preparation of the catalyst and an application of the catalyst to the Fischer-Tropsch reaction.

The invention discloses a water-cooled shock absorber. The water-cooled shock absorber comprises a shock absorber body and a water jacket which is arranged outside the shock absorber body, wherein a water inlet and a water outlet are formed in the water jacket. According to the water-cooled shock absorber, the water jacket allowing water flow to pass is arranged outside the cylindrical wall of the shock absorber body, heat of the high-temperature shock absorber body is transmitted to low-temperature water in the water jacket through heat transmission conducted when the low-temperature water flows through the water jacket, heat is taken away through the circulating flowing of the water, in this way, effective cooling of the shock absorber is achieved effectively, the shock absorber operates in a good working condition, carbonization of oil in the shock absorber or volume expansion of the shock absorber is avoided, the occurrence rate of accidents such as oil leakage is reduced, and the service life of the shock absorber is effectively prolonged.

A semiconductor chip, including: a substrate including an front surface; an integrated circuit formed on the front surface and including a plurality of semiconductor elements; and a heat-radiating plug formed in a region of the substrate corresponding to at least one of the semiconductor elements. The heat-radiating plug is made of a material having a thermal conductivity greater than that of the substrate formed in a non-penetrating hole having its opening on a reverse surface of the substrate.

An electric rotating machine includes a stator, a rotor, and a housing. The stator includes a stator core and a stator coil formed by laminating magnetic steel sheets. Each of the magnetic steel sheets has through-holes that are formed to penetrate the magnetic steel sheet in the axial direction of the stator core. All of the magnetic steel sheets are divided into groups each of which includes axially-adjacent n of the magnetic steel sheets, where n is an integer not less than 2. For each of the groups, corresponding n of the through-holes of the n magnetic steel sheets of the group communicate with one other to form an inside coolant passage. The inside coolant passage fluidically connects an outside coolant passage, which is formed between the housing and the radially outer surface of the stator core, with a corresponding one of the slots of the stator core.

A semiconductor chip, including: a substrate including an front surface; an integrated circuit formed on the front surface and including a plurality of semiconductor elements; and a heat-radiating plug formed in a region of the substrate corresponding to at least one of the semiconductor elements. The heat-radiating plug is made of a material having a thermal conductivity greater than that of the substrate formed in a non-penetrating hole having its opening on a reverse surface of the substrate.

An apparatus for enhancing heat transfer efficiency of an endothermic / exothermic article includes a heat sink disposed on the endothermic / exothermic article to enhance heat transmission, a plurality of fins formed on the heat sink to enhance heat exchange, and a porous medium disposed on the fins to increase cooling efficiency of the endothermic / exothermic article by air flowing between gaps between the fins and the porous medium.

The invention discloses a control system and method for a condenser and a water chilling unit. The condenser comprises at least one spraying type cooling tower, a water pan and a water pump, wherein the water pan and the water pump are arranged below the spraying type cooling towers, and the water pump adopts a variable frequency water pump. The control system comprises a controller, and the controller collects a temperature value of an outlet of the water pan, compares the temperature value with a temperature value detected at the previous period and regulates and controls the water supply amount of the water pump according to the comparison result. According to the control system and method for the condenser and the water chilling unit, the water supply amount can be adjusted, in addition, effective heat exchange on the condensation side can be guaranteed, the capacity and the energy efficiency of the unit can be improved, meanwhile, water can be saved, and therefore the operation cost can be saved.

The invention discloses a modified hydrocarbon resin prepolymer, a copper-clad plate and preparation methods of the modified hydrocarbon resin prepolymer and the copper-clad plate. The modified hydrocarbon resin prepolymer is prepared by mixing and reacting 50-450 parts by mass of hydrocarbon resin, 50 parts by mass of a mixture of epoxy resin / maleimide resin containing double bonds, 1-5 parts bymass of an initiator A and 180-280 parts by mass of a solvent A through a micro-channel reactor and removing the part of the solvent; the modified hydrocarbon resin copper-clad plate is prepared froma the composition of the modified hydrocarbon resin prepolymer, high-heat-resistance high-toughness low-dielectric fluorenyl benzoxazine resin, an inorganic filler, an initiator B, an accelerator A, areinforcing material with a mass ration being 90: (10-30): (40-100): (0.01-1): (0.01-1): (70-200); the prepared modified hydrocarbon resin copper-clad plate has the characteristics of low dielectricconstant, low dielectric loss, low water absorption, high glass-transition temperature and high peel strength.

The embodiment of the invention provides a heat-conducting device. The heat-conducting device comprises a first heat-conducting plate and a heat-conducting structure. The first heat-conducting plate comprises an upper heat-conducting arm arranged on the surface of the first heat-conducting plate. The heat-conducting structure and the upper heat-conducting arm of the first heat-conducting plate are slidably pressed against so as to form a contact surface and transfer heat through the contact surface. The heat-conducting structure comprises a heat-conducting surface. The heat-conducting structure is used for keeping the relative position between the first heat-conducting plate and the heat-conducting surface, is capable of changing the distance between the first heat-conducting plate and the heat-conducting surface of the heat-conducting structure by relative sliding between the upper heat-conducting arm and the heat-conducting structure and can ensure a contact surface for heat transfer between the upper heat-conducting arm of the first heat-conducting plate and the heat-conducting structure all the time. In the invention, the heat-conducting structure of the heat-conducting component capable of sliding relatively is used for compensating a manufacturing error, so the heat conductivity and reliability of the heat-conducting structure are improved.

A vehicle headlamp that forms a predetermined light distribution pattern using light irradiation from a plurality of lamp units. It not only achieves thinning of the lamp but also allows the optical axes of each lamp unit to be aligned. Perform optical axis adjustments for multiple lighting units. A plurality of lamp units (30) using light-emitting elements (34) as light sources are tiltably supported on a common unit support member (20) to collectively adjust the optical axis. At this time, the unit support member (20) is configured such that the light source fixing portions (20B1) formed at a plurality of positions are in contact with the back surface (42a) and the outer peripheral surface (42b) of the support plate (42) that supports the light emitting element (34). The structure of the positioning recess (20d) is formed. This allows the light-emitting element (34) to be mounted on the unit support member (20) with high positional accuracy. Make the optical axes (Ax) of each lamp unit (30) consistent.

The invention discloses an air cooling structure of an outer rotor electric roller. The air cooling structure comprises a fixed seat (27), an end cover assembly and a stator assembly, the stator assembly comprises a stator sleeve (1), an axial rib plate (4), an air deflector structure, a bearing pedestal (3), a main shaft (9) and a stator coil iron core assembly (12). The air deflector structure is connected with the axial rib plate (4) and the main shaft (9); the axial rib plate (4) is connected with the bearing seat (3), the stator sleeve (1) and the main shaft (9); air inlet and outlet ducts are distributed on the fixed seat (27); air inlets and outlets are distributed in the end cover assembly; a ventilating duct is formed outside a shaft among the stator sleeve (1), the air deflectorstructure and the axial rib plate (4); the fan at one end of the main shaft (9) sends cooling air flow into the ventilating duct through a fixing base (27) and the end cover assembly to cool a statoriron core, and then through the ventilating duct outside the shaft, the flow of the cooling air entering the stator is increased, the heat dissipation effect is enhanced, and therefore the service life of the electric roller is effectively prolonged.

The invention discloses a modified hydrocarbon resin prepolymer, a modified hydrocarbon-DCPD epoxy composite material copper-clad plate and a preparation method thereof. The modified hydrocarbon resinprepolymer is prepared by mixing and reacting 50-200 parts by mass of hydrocarbon resin, 50 parts by mass of a resin mixture containing double-bond benzoxazine resin / modified polyphenyl ether resin,1-5 parts by mass of an initiator A and 110-280 parts by mass of a solvent A through a micro-channel reactor and removing part of the solvent. The modified hydrocarbon-DCPD epoxy composite material copper-clad plate is prepared by thermally curing a composition and a copper foil, wherein the mass ratio of a modified hydrocarbon resin prepolymer to DCPD epoxy resin to an inorganic filler to an initiator B to an accelerant A to a reinforcing material is 90: (10-30): (40-100): (0.01-1): (0.01-1): (70-200); the ceramic has the characteristics of low dielectric constant, low dielectric loss, low water absorption, high glass-transition temperature and high peel strength.