195results about How to "Improve heat storage performance" patented technology

The invention relates to a high-efficiency phase change energy storage microcapsule with a thermochromic function, and a preparation method thereof. The core of the microcapsule is a high-grade aliphatic hydrocarbon, alcohol, acid or lipid organic phase change material, and the wall of the microcapsule is a polymer formed by surface modified thermochromic powder and an organic polymer monomer. The preparation method of the microcapsule comprises the following steps: carrying out surface modifying treatment on the thermochromic powder with a coupling agent; mixing the surface modified thermochromic powder, the organic phase change material and the organic polymer monomer as an oil phase, and adopting an aqueous solution of a surfactant as a water phase; and adding the oil phase to the aqueous phase, and carrying out high speed emulsification and polymerization to form the high-efficiency phase change energy storage microcapsule with a thermochromic function. The preparation method has the advantages of simple preparation process, and easy control of the reaction process; and the material has the advantages of wide thermochromic temperature range, abundant color, high heat storage ability and long recycling life, and is hopeful to be applied in the fields of chromogenic indication, coatings and building materials.

The invention relates to a method of preparing polymer asphalt with one step to modify the asphalt by adopting the polymer as a modifying agent. In a peptizator of 80 to 160 DEG C which account for 5 to 27 percent of the total weight of the raw materials, the polymer modifying agent and 0.1 to 2 percent of stabilizer which account for 2 to 9 percent of the total weight of the raw materials are added, and then is poured into a plastic extruder where the rotating speed is 300 to 800 rotations per second to be extruded; the extruding temperature is controlled to be 130 to 210 DEG C; the extruded polymer is directly and mixingly stirred for 0.5 to 6 hours together with the asphalt which accounts for 62 to 89.9 percent of the total weight of the raw materials, then the polymer modified asphalt is gained, which is provided with good heat preservation function, good low temperature expanding performance, anti-fatigue and anti-tearing function and relatively good weatherproof function. After being mixed with the stones, the mixed materials perform good water stability and high and low temperature stability, which can effectively improve the using performance of the asphalt pavement and prolong the service life.

The invention relates to a solar heat storing and collecting device based on the combination of vacuum pipes and a casing pipe in the technical field of solar energy utilization. The device comprises a plurality of glass vacuum pipes, a heat transfer casing pipe, a heat conductance material, an elastic corrugated ribbed plate, a heat-insulating plug and a condensing plate, wherein the heat conductance material comprises the following components in percentage by volume: 50 percent of solid-solid phase-change heat storage material, 20 percent of graphite powder and 30 percent of heat conducting oil; and the solid-solid phase-change heat storage material refers to cross-linked high-density polyethylene, laminated perovskite or polyalcohol. The solar heat storing and collecting device has the advantages of simple structure, safe and reliable operation, high and stable heat efficiency of a system, and capability of greatly saving cost and space due to integrated design; and the device has a regulating function of storing heat on sunny days and releasing the heat on cloudy days, so the temperature of an air or steam working medium at an outlet can be stabilized in a certain specific temperature range of between 120 and 190 DEG C.

The invention relates to the field of energy storage and discloses a combined cooling, heating and power compressed-air energy storage system. In the energy storage mode, according to the system, electric energy is consumed by the aid of a compressor set, compressed air is stored in an air storage device, and heat produced in the compression process is recovered by the aid of a cooler and is stored in a heat storage device; in an energy releasing mode, according to the system, the air in the air storage device is heated by the aid of a regenerator, a turbine generator set is driven by the hotair to generate power, and cold produced in the expansion process is stored in a cold storage device; in the heating mode, according to the system, heat is supplied to the outside of the system by theaid of the heat storage device; and in the cooling mode, according to the system, cold is supplied to the outside of the system by the aid of the cold storage device. The system can run in the singlemode or run in a multiple-mode-mixed manner. Meanwhile, the system can recover heat sources such as industrial waste heat, waste heat, solar energy and the like by the aid of a preheater or the heatstorage device, or the system can recover the cold such as industrial waste cold, LNG gasification and the like by the aid of an after-cooler or the cold storage device, and the simple system is usedfor meeting the diversified energy requirements.

The invention discloses a graphitized graded porous carbon composite phase change energy storage material and a preparation method thereof. A carbon precursor with a low price, a graphitization catalyst and a pore-forming agent are used as raw materials and are treated through technologies including ball milling and mixing, carbonization and the like to prepare graphitized graded porous carbon; then the prepared graphitized graded porous carbon is used as a supporting material and is compounded with a phase change material to obtain the graphitized graded porous carbon composite phase change energy storage material. The porous carbon material prepared by the invention has a three-dimensional intercommunication graded porous network structure and a high graphitization degree; the sizing andpackaging of the phase change material are easy to realize; meanwhile, a good heat-conducting network channel can be provided and the heat transferring performance is enhanced; the porous carbon material is prepared by adopting an additive containing metal salt; in a preparation process, part of metal substances can be reduced by utilizing carbothermal reduction reaction and the heat conduction performance of the material is further increased, so that the composite phase change energy storage material with high heat conduction performance and good chemical stability is obtained.

The invention relates to a vehicle-mounted hydrogen production device, an alcohol outlet (6) of an alcohol box (1) is connected with a heater through an alcohol pipe, an alcohol gas outlet of the heater is connected with a reactor through an alcohol pipe, the reactor is provided with a pyrolysis gas outlet which is used to connect with a vehicle motor; one end of the heater is provided with a tailgas inlet which is used to connect with the vehicle motor, and the other end is provided with a tail gas outlet which is used to connect with a mufeler. By using the invention to produce hydrogen onvehicle, partial gasoline can be replaced, the atomizing, mixing and burning of gasoline can be improved and the thermal efficiency of the gasoline engine is improved. Practical detections show that when the hydrogen fraction in the fuel blends is 4.7wt%, 30-40% of fuel oil can be replaced and the total amount of hydrocarbons, nitrogen oxides and carbon monoxide in tail gas can be reduced by morethan 90%.

The invention discloses a preparation method for self-illumination wood capable of simultaneously storing heat energy and light energy, relates to a preparation method for the energy-storage self-illumination wood, and aims to solve the problem that the wood capable of simultaneously storing heat energy and light energy cannot be prepared at present. The method comprises the following steps: 1, dipping the wood into mixed solution of sodium hydroxide and sodium sulfite, heating to the boiling point, and washing to obtain delignify wood; 2, dipping the delignify wood into hydrogen peroxide solution to be bleached to obtain the bleached wood; 3, mixing rare earth aluminate illumination materials with a molten phase change material to obtain the mixture of the rare earth aluminate illumination material and the phase change material, dipping the bleached wood into the mixture of the rare earth aluminate illumination material and the phase change material to be kept, and obtaining the self-illumination wood capable of simultaneously storing heat energy and light energy. The invention discloses the preparation method for the self-illumination wood capable of simultaneously storing the heat energy and the light energy.

The invention discloses a battery thermal management device of a new energy vehicle. The device comprises a casing body (5), at least one battery cell (1) arranged in the casing body (5), and heat dissipating plates (2) attached to both sides of each battery cell (1). Each heat dissipating plate (2) comprises a phase change material heat dissipating plate and a heat pipe for dissipating heat of the phase change material heat dissipating plate. Each heat pipe comprises an evaporation section and a condensation section. Each evaporation section is inserted inside a phase change material heat dissipating plate, and each condensation section is located on the outer side of the phase change material heat dissipating plate. Each heat pipe further comprises a liquid cooling plate (4) in contact with the condensation section. The battery thermal management device effectively solves the problem of poor heat dissipation of a new energy battery and poor temperature uniformity of the battery. Theinvention further discloses the new energy vehicle including the battery thermal management device, and the new energy vehicle has the above-mentioned beneficial effects.

The invention relates to a heat storage pit warm in winter and cool in summer and belongs to the technical field of indoor worming facilities. The heat storage pit comprises a pit body, ranges and a chimney, wherein the pit body is positioned underground and comprises a pit plate and a grait heat storage bed; a flue is arranged between the pit plate and the grait heat storage bed; the chimney is vertical to the pit plate; the flue is communicated with the chimney; each range comprises a hearth and a dust falling chamber under the hearth, and a grate is arranged between the hearth and the dust falling chamber; the ranges are a winter range and a summer range; a hot water ring is arranged at the upper part in the hearth of the winter range; the two ends of the hot water ring are communicated with one end of a water supply pipe and one end of a water return pipe; the other ends of the water supply pipe and the water return pipe are communicated with a heating radiator; a smoke outlet of the hearth of the winter range is communicated with a smoke outlet cylinder; a smoke outlet of the smoke outlet cylinder is arranged in the chimney; a sleeve is arranged outside the smoke outlet cylinder in a sleeving manner; a hot air chamber is hermetically formed between the smoke outlet cylinder and the sleeve; one end of the hot air chamber is communicated with a blast pipe and a speed-regulating blast blower; and the other end of the hot air chamber is communicated with a hot air outlet pipe.

The invention provides a preparation method of a light and heat storage type composite phase change material for energy storage, which comprises the following steps: adding polyvinyl alcohol into deionized water, stirring and dissolving to obtain a polyvinyl alcohol solution; mixing the cross-linking agent and the heat-conducting filler, and performing ultrasonic stirring to obtain a first mixed solution; mixing the first mixed solution with a polyvinyl alcohol solution, and stirring the mixture until the mixture is uniformly dispersed to obtain a second mixed solution; pre-freezing the second mixed solution to a solid state, and then freeze-drying the mixture to obtain polyvinyl alcohol-based composite aerogel; mixing the phase change material and the light storage particles to obtain a phase change core material; and immersing the polyvinyl alcohol-based composite aerogel into the phase change core material in vacuum, and cooling the composite aerogel to room temperature to obtain the light and heat storage type composite phase change material. The composite phase change material provided by the invention has the characteristics of high phase change enthalpy, high thermal conductivity, low leakage rate and excellent light storage and heat storage performance.

The invention relates to the field of a phase change material, in particular to an inorganic hydrated salt phase change material and a preparation method thereof. The inorganic hydrated salt phase change material is prepared from the following components by weight percent: 65 to 75 percent of heat storage agent, 8.5 to 10 percent of xanthan gum, 4.5 to 15 percent of heat conducting material, 4.5 to 8 percent of modifier and 2 to 10 percent of nucleating agent. The inorganic hydrated salt phase change material has the advantages that the cold phenomenon can be completely eliminated, the energystorage density is high, the phase change volume is small, the inorganic hydrated salt phase change material is nontoxic, non-volatile, stable in performance, good in repeatability and convenient in use; the service life of the phase change material is effectively prolonged; and the phase change temperature of the phase change material is 10 to 30 DEG C, the heat conducting performance is good, the phase change reversibility is good, the phase changetransition is fast, and the heat storage performance is good.

The invention relates to a solar heat power generation system which is composed of a groove-type solar condensation and heat accumulation device, a first heat storage device, a steam generator and a second heat storage device, wherein heat accumulating pipes the interiors of which are filled with molten salt are arrayed at an optical focus position of the condensation and heat accumulation device, and the molten salt is used for storing the heat energy of the sun; the first heat storage device is connected with the heat accumulation pipes and is used for storing the molten salt which is heated by the sunlights; the first heat storage device is connected with the steam generator, exchanges energy with water in the steam generator, and changes water into saturated vapor to enter a steam turbine to do work in an expansion mode; the steam generator is connected with a second heat storage device; the second heat storage device is connected with the heat accumulation pipes; and the molten salt after energy exchange in the steam generator enters the heat accumulation pipes through the second heat storage pipe, thus circulation is formed. The system provided by the invention has the characteristics of high efficiency, heat accumulation function, good heat storage performance, good continuity, low cost and the like.

The invention discloses heat-storage aerated concrete and a preparation method thereof. The method comprises the following steps: mixing expanded perlite and a molten phase-change material evenly, carrying out vacuum adsorption in a water-bath environment of 70 DEG C for 1 hour, and cooling the mixture at 20 DEG C after adsorption is ended; evenly spraying a triethanolamine aqueous solution on the surface of the expanded perlite adsorbing the phase-change material; and carrying out ash coating treatment with cement, evenly coating the surface of the expanded perlite with a cement grey layer, spraying water on the surface of the expanded perlite after ash coating treatment, and hardening the cement on the surface of the expanded perlite into a shell to obtain the composite phase-change material. By virtue of the heat storage property of the phase-change material, the heat storage coefficient of the aerated concrete can be effectively improved by compounding the phase-change material with the aerated concrete, so that the heat preservation and heat insulation capabilities of the aerated concrete can be further improved; and the building energy efficiency is improved. Moreover, the triethanolamine aqueous solution is sprayed on the surface of the perlite, so that uniform and complete ash coating can be ensured on the basis that the surface of the expanded perlite adsorbing paraffin has relatively good wettability; and leakage of the phase-change material is effectively prevented.

The invention provides a composite stainless steel pot. The composite stainless steel pot consists of a pot bottom and a stainless-steel pot body, wherein the pot bottom is of a double-layer composite structure and is formed through laminating a stainless steel layer and an aluminum-copper alloy laminate layer, the stainless steel layer is a support heating layer, the stainless steel layer and the aluminum-copper alloy laminate layer have certain radian, the bottom of the stainless-steel pot body is full of small bulges, and a plurality of small grooves are distributed at the middle-lower part of the pot wall of the stainless-steel pot body. According to the composite stainless steel pot, the composite pot bottom is adopted, and the heated area of the pot bottom is increased due to the arc-shaped design of the lower-layer stainless steel layer and the aluminum-copper alloy laminate layer; due to the small bulges of the bottom of the stainless-steel pot body, the food heated area is enlarged, and the condition that food is scorched due to local overheating is prevented; due to the adoption of the aluminum-copper alloy laminate, the pot bottom can be heated uniformly, and heat energy is utilized sufficiently; the heat storage property is good, heat is unlikely to dissipate after the pot bottom is heated, so that the composite stainless steel pot can be continuously used for heating the food.

The invention relates to a method for sunning slat and generating power by using solar energy and wind energy. The method is characterized in that: salt manufacturing facilities and a salt store are put into a solar wind power station; and water evaporation is accelerated and water vapor is recycled to form distilled water by using the characteristics of high temperature and high airflow speed inthe power station. The method comprises that: a plurality of balls containing fiber cloth are arranged in a brine pond; the sunlight is radiated to a film greenhouse; the air in the greenhouse, the water-containing black fiber cloth on the balls and the seawater in the brine pond absorb solar heat to generate rising water vapor and hot air; a part of water vapor rises to the greenhouse and is cooled and condensed into distilled water, and the rest water vapor and the rest hot air flow to an air cylinder and rise along the air cylinder to drive a plurality of wind driven generators in the air cylinder to generate power; and in the sunlight-free time period, the salt in the salt store, the seawater in the brine pond and the balls release heat, and the moisture is continuously evaporated to generate distilled water and power.

The invention discloses rubber and plastic compound modified asphalt with high temperature resistance and thermal storage stability. The rubber and plastic compound modified asphalt is prepared from matrix asphalt, waste tire rubber powder, polyethylene and a double-25 modifying agent, wherein the content of the waste tire rubber powder accounts for 10-35% of the weight of the matrix asphalt, the content of polyethylene accounts for 3-10% of the weight of the matrix asphalt, and the content of the double-25 modifying agent accounts for 0.5-4.0% of the weight of the waste tire rubber powder. The preparation method of the rubber and plastic compound modified asphalt comprises the steps of (1) heating the matrix asphalt to be in a hot melting state, slowly adding the weighed mixture of the weighed waste tire rubber powder, polyethylene and the double-25 modifying agent, and stirring to uniformly mix the mixture; and (2) shearing at a high speed for 45-120 minutes when heating the modified asphalt mixture obtained in the step (1) to 185-200 DEG C. The rubber and plastic compound modified asphalt disclosed by the invention is good in flowability under the condition of high-temperature service, easy to construct and spread, favorable in thermal storage stability and capable of reducing the cost and reducing environment pollution through recycling waste and old plastics and waste tires.

The invention discloses a phase-change composite material filled with graphene nanosheets and a preparation method. The preparation method for the phase-change composite material filled with graphenenanosheets is characterized by comprising the following steps: (step 1) n-octadecane solid which already undergoes drying pretreatment is completely melted; (step 2) graphene nanosheets and superdispersant are added into liquid-phase n-octadecane according to a proportion, so that a mixed suspension is obtained; (step 3) an agitator is used for agitation, so that the suspension is uniformly mixed;(step 4) the uniformly mixed suspension is poured into an ultrasonic cleaner and ultrasonically oscillated, so that the graphene nanosheets are formed into a stable three-dimensional heat conductionnetwork structure inside n-octadecane; (step 5) the suspension obtained in step 4 is naturally cooled to be solidified, and thereby the phase-change composite material with n-octadecane as a matrix which is filled with the graphene nanosheets is obtained. The phase-change composite material and the preparation method disclosed by the invention can be widely applied in fields, such as energy.