331results about How to "High electrothermal conversion efficiency" patented technology

The invention discloses an anti-icing and deicing system for a large wind power generation built-up blade. The system comprises a built-up blade body, wherein the built-up blade body is formed through that a fiber heating material layer is laid on an outer surface or a middle surface or an inner surface of a skin made of fiber base metal. A coating layer is laid on the outer surface of the skin to protect the fiber heating material and the skin fiber base metal. Two ends of the fiber heating material layer are respectively connected with a conductive electrode, and the conductive electrodes are connected with a fiber heating power supply through wires. The skin outer surface and the skin middle layer or the fiber heating material layer of the inner surface of the skin are all provided with temperature sensors, and outputs of the temperature sensors are connected with a temperature controller through signal wires. By the system, anti-icing and deicing of the large wind power generation built-up blade under the environment of low-temperature high-humidity and freezing can be achieved, and the problems that generating efficiency is reduced due to icing and electricity generation loss due to stopping are avoided. The anti-icing and deicing system for the large wind power generation built-up blade has important economic and social benefits.

The invention discloses a carbon nano tube composite carbon crystal paint and a method for preparing a carbon crystal electric heating material from the same, wherein the carbon crystal composite paint is prepared from carbon nano tubes, modified ball milling short carbon fibers, resin paints, infrared emission powder and the like; and the carbon crystal electric heating material is prepared by spraying or scratching the paint into a film on a planar template (paper base template, plastic template and the like), and compositing with an aging proof high molecular material to obtain the planar electric heating material. The carbon crystal composite paint and the carbon crystal electric heating material have strong far-infrared radiation, high electric heating conversion efficiency, small surface temperature difference, good corrosion resistance, weather resistance and aging resistance and high safety, can be compatible with concrete, can be used as a heating product for buildings, and can also be processed into various electric heating products, such as an electric heating plate, an electric heating carpet, a dry wardrobe, a foot warmer, a food warmer and the like.

The invention discloses a graphene heating ink, a preparation method and application thereof. The graphene heating ink comprises the following raw materials by mass percent: 5-15% of carbon black, 10-25% of graphite, 0.1-5% of graphene powder, 0.1-8% of carbon nanotube powder, 25-40% of an adhesive, 1-5% of an assistant, and the balance a mixed solvent. Through combination of dotted carbon black,linear carbon nanotubes and planar graphene, a mutually cross-linked stable structure can be formed inside the ink, and the safety is high. Through improvement of the preparation process and the ink formula components, blistering does not occur easily in the stirring process, and the ink has good adhesion during printing, the electro-thermal conversion efficiency of the heating ink is remarkably improved, the far infrared normal emissivity of an electrothermal film is significantly enhanced, the service life of the electrothermal film is greatly increased, and the power change of 100,000h aging test is less than 2.6%. Also, the implementation process adopted by the invention is simple, efficient and practical.

The invention discloses a method for preparing a carbon fiber reinforced thermoplastic composite material, which comprises the following steps: 1)alternatively paving carbon fiber and thermoplastic resin in a die, wherein a bottom layer and a top layer of the die are thermoplastic resin, closing the die and applying pressure; 2)accessing power supply to a carbon fiber layer, rapidly heating under current effect, when the temperature is higher than the melting point of thermoplastic resin, fusing thermoplastic resin, dipping carbon fiber under pressure; and 3)breaking power, cooling the die, and then opening the die to obtain the carbon fiber reinforced thermoplastic composite material. The method takes carbon fiber as a heat-generating body, the electrothermal conversion efficiency can reach as high as more than 90%, and the energy saving effect is obvious; simultaneously, carbon fiber is capable of melting thermoplastic resin and completing dipping, and has the advantages of short moulding time and good dipping effect, formation of good cross section of thermoplastic resin and fiber can be realized, composite material performance is increased, and processing of product with large thickness can be realized in short time.

The invention discloses a graphene-based electrothermal film capable of efficient heat conduction and a preparation method thereof. The graphene-based electrothermal film comprises an upper insulation material layer, a conductive paste layer, a bottom insulation material layer and an electrode, wherein the electrode is arranged on the conductive paste layer, conductive paste is uniformly coated on a bottom insulation material, and an upper-layer insulation material is attached onto the bottom insulation material coated with the conductive paste by a hot-pressing lamination method to form an insulation material-heat conduction paste-insulation material composite structured electrical heating film. After graphene is added into the electrical heating film, the prepared electrical heating film has relatively high heat conduction performance, the electrothermal conversion efficiency is favorably improved, and the temperature rising time after the heating film is energized is shortened.

The invention discloses a tubular electronic cigarette heater which comprises a metal tube, an insulating layer wrapping the outer surface of the metal tube, a heating layer for heating the metal tube, and a protection layer covering the heating layer. The heating layer is led out of the protection layer through a lead. According to the tubular electronic cigarette heater, by arranging the insulating layer on the outer surface of the metal pipe and arranging the thick-film circuit heating layer formed by sintering resistance paste on the insulating layer, since a thick-film circuit is quite low in overall thickness and is attached to the insulating layer through high-temperature sintering, the thick-film circuit heating layer can be regarded as one part of the tube wall of the tubular electronic cigarette heater, the tubular electronic cigarette heater has the advantages of being rapid in heating, extremely high in power density and the like and is high in electro-thermal conversion efficiency, and energy consumption is reduced. The invention further provides a preparing method of the tubular electronic cigarette heater and an electronic cigarette with the same advantages.

The invention discloses an environment self-adaptation modularized intelligent building system suitable for the field. The environment self-adaptation modularized intelligent building system comprises a modularized-assembled building body structure, an assembled house unit bathroom, an assembled house integrated kitchen, an assembled house carbon fiber electric heating floor heating plate, a solar photovoltaic power generation system, a wind power generation system, a wind-solar complementary power system, a roof rainwater collecting system, an FRP digestion tank, a soilless cultivation sunshine vegetable greenhouse, a cooling water curtain and the like, wherein the wind-solar complementary power system is composed of the solar photovoltaic power generation system and the wind power generation system. Solar photovoltaic power generation can be achieved through the building system, energy of power generation can be used for cooling in summer and heating in winter, water resources of the nature can be recycled, and the modularized movable building system can reduce the environment pollution and material waste and can also reduce power supply cost and the like.

The invention relates to the technical field of biomedical engineering methods, in particular to a method for manufacturing a flexible-substrate metal microneedle array. The method includes a, preparing solidifiable iron magnetic fluid; b, manufacturing a flexible substrate; c, arranging liquid drops of the solidifiable iron magnetic fluid on the flexible substrate in an array manner to form a combination of a solidifiable iron magnetic fluid liquid drop array and the flexible substrate; d, disposing the combination obtained in the step c in a magnetic field to enable each liquid drop to become needle-shaped, and solidifying each liquid drop to form a stable and solidified microneedle array structure; e, forming a layer of metal uniform in texture on the surface of the microneedle array structure obtained in the step d through vacuum sputtering to form a metal microneedle array. The microneedle array structure is formed by through mutual action between the magnetic field and the iron magnetic fluid liquid drops containing magnetic nanoscale iron magnetic particles.

The method is: its heating component is carbon fiber that is spiral wrap on the insulation framework, the joint is heat resisting steel joint having enclosed end; the heating component is blocked in the quartz capsule coated with infra red radiation paint, the quartz capsule is filled with high purity inert gases or is vacuum. The invention is specially applied in low temp baking and heating equipment.

The invention discloses an electric heating film, an electric heating plate and corresponding manufacturing methods. The electric heating film comprises a substrate and a heating coating, wherein the heating coating comprises an adhesive and a carbon heating material; the carbon heating material is the mixture of carbon black power and graphite powder. Moreover, the invention discloses an electric heating plate using the electric heating film, and manufacturing methods for the electric heating film and the electric heating plate. The electric heating film and the electric heating plate, obtained by the manufacturing methods, are very uniform in heating, free from electromagnetic radiation and harmless to humans, emits no visible light at a temperature of below 500 DEG C and is very high in electricity-heat conversion efficiency; because the heating body is made of a carbon powder material and cannot be oxidized by the oxygen in the air, the service life is long; according to the electric heating film obtained according to the formula and the electric heating plate containing the electric heating film, under the condition of meeting the using power, heat is emitted from a surface and the electric heating film and the electric heating plate are very thin and very small in mass, and the instantaneous heating capacity is very small, so that heating is fast, and the purpose of plugging and heating is achieved.

The invention discloses supersonic electromagnetic-induction heating equipment which comprises a supersonic power supply control system, a supersonic electromagnetic-induction heating device, a first recycle pump, a heat storage device, a second recycle pump and heat radiating fins. The heat storage device is internally provided with a first temperature sensor which is electrically connected with a first temperature controller, and the first temperature controller is respectively connected with the supersonic power supply control system, the supersonic electromagnetic-induction heating device and the first recycle pump. The supersonic electromagnetic-induction heating equipment adopts a supersonic electromagnetic-induction heating mode, has high electrothermal conversion efficiency and low operation cost, reaches the national requirements for saving energy and reducing emission, solves the problem of environmental pollution and has wide application prospects, thereby being the current latest and optimal heating equipment.

The invention discloses a multifunctional air purifying device and a multifunctional escape top window. The multifunctional air purifying device comprises a shell, an air inlet is formed in the front end of the shell, an air outlet is formed in the rear end of the shell, an ACF (activated carbon filter) screen, a double-voltage static ionization dust collection device and a fan are sequentially arranged between the air inlet and the air outlet, a PTC (positive temperature coefficient) heating device is mounted between the fan and the air outlet, the double-voltage static ionization dust collection device comprises a front and back open frame, a high-voltage ionization area is arranged on the front half portion of the frame, a low-voltage dust collection area is arranged on the rear half portion of the frame, a high-voltage electrode is arranged in the high-voltage ionization area, and a low-voltage electrode is arranged in the low-voltage dust collection area. By the aid of the structure, gas is ionized by an electrostatic field, so that dust particles are electrified and adsorbed to the electrode, harmful gas such as formaldehyde, benzene series and ammonia in air can be adsorbed, particulate matters (PM10 and PM2.5) and the harmful gas such as the formaldehyde, the benzene series and TVOC (total volatile organic compound) are remarkably and effectively removed, and a remarkable air purifying function is effectively achieved.

Proportioning (volume percent) of the composite material is as following: solidified agent 1-2%, flame retardant 0.5-2%, insulation material 20-60%, nano graphite powder 36-75%. Nonmetallic electrothermal film is prepared through thermoplastic molding and traditional technical molding. Characters of the composite material are as following: capability of any folding for many times repeatedly, water washable, high electrothermic conversion efficiency, portable and long service life. Electrical specification of the composite material is as following: AC or DC 1.2-380V, power 1W-3kW, heating temperature 20-85 deg.C and 100-250 deg.C. The composite material is applicable to thermal wear, electric carpet, drying apparatus and other heating elements.

The invention relates to an instantaneous water heater achieving high-frequency electromagnetic induction heating. Based on the high-frequency electromagnetic induction principle, high-frequency induction current is used for enabling ferrite stainless steel pipes to generate vortex to generate heat rapidly, and water flowing through the stainless steel pipes is rapidly heated with high power; an induction heating assembly is an induction heating coil assembly formed by sealing and fixing induction coils as a whole through high temperature resisting silica gel, and the induction heating assembly is inserted in an annular clearance of an inner and outer pipe composite heating pipe, so that the outer wall of an inner pipe and the inner wall of an outer pipe receive a high-frequency induction magnetic field at the same time to generate vortex to generate heat rapidly; due to the fact that inner and outer induction heating is carried out at the same time through the induction coils, the heating speed is high, no heating power attenuation exists during long-time use, and the electrothermal conversion efficiency is high; due to the fact that three layers of stainless steel plates are arranged on the outer portions of the coils for shielding, electromagnetic radiation is effectively avoided; due to induction heating, electric insulation and isolation are higher, and the hidden danger of electric shocks is effectively avoided; and due to the action of induction heating high-frequency alternating current, water scale is avoided, and the service life of the water heater is prolonged greatly.

This invention relates to the production of nickel-base semiconductor heat producing material. It contains: nickel 50-64%, cobalt 10-23%, titanium 5-12% (weight percentage). This invented material has excellent low voltage performance. It can work under 10-60 volt of direct current. The articles made by said material (nanometer electric heating means) has high conversion efficiency of electricity to heat. It has no problems of leakage of electricity and electric shock. It has advantages of: easy to be used, wide use, with the same can be manufactured being soft heat-producing articles or hard heat-producing articles such as lift-saving warm clothes, electrically heating cap, electrically heating shoes, electric gloves, electric quilt used outdoor and field cooking use for the army.

The invention provides an air purification sheet and an air purification module. The air purification sheet comprises a base material sheet, a purification coating and a heating assembly, wherein thepurification coating is arranged on the outer surface of the base material sheet; the base material sheet comprises a first supporting sheet and a supporting sheet; the heating assembly is arranged between the first supporting sheet and the second supporting sheet. Thus, the air purification sheet is simple in structure, convenient to manufacture and low in wind drag. The heating assembly is arranged in the air purification sheet and can make the purification coating rapidly regenerate in situ. The service life of a purifying material is prolonged. The air purification sheet can be used for effectively purifying indoor gaseous pollutants for a long term.

The invention provides far-infrared paper. The far-infrared paper has a sandwich structure; a surface layer of the sandwich structure is aramid insulating paper, and a core layer of the sandwich structure is aramid-carbon nanotube paper. The far-infrared paper is used for an electric heating device, and the obtained aramid far-infrared physiotherapy electric heating device has uniform heating, adjustable power and high electrothermal conversion efficiency (close to 100%), can save energy, has physical therapy, warming and health-preserving functions and the like, and can meet the needs of different users.