78results about How to "Large latent heat" patented technology

The invention provides a packaging shape-stabilizing method of an inorganic hydrated salt phase-change heat storage material, which comprises the following steps: (1) adding a nucleator and deionized water into the inorganic hydrated salt phase-change material, and heating until the inorganic hydrated salt phase-change material achieves the molten state; (2) adding a porous propping material into the molten-state inorganic hydrated salt phase-change material, and stirring sufficiently and uniformly; (3) putting the molten-state mixture obtained in the step (2) in a vacuum environment to enhance the adsorptivity of the porous propping material for the inorganic hydrated salt phase-change material; and (4) moving the molten-state mixture out of the vacuum environment, and immediately putting the molten-state mixture into a low-temperature environment suitable for crystallization to perform recrystallization. The composite shape-stabilized phase-change material obtained by the method has the advantages of stable structure, high latent heat, no toxicity, simple preparation process, short time consumption and low cost.

The invention provides a low-temperature thermal control phase change microcapsule and a preparation method thereof. The low-temperature thermal control phase change microcapsule takes paraffin alkane as a core material and urea resin as a shell, and further comprises a heat conduction filler, the heat conduction filler is added in the process of coating the paraffin alkane by the urea resin, and the amount of the added heat conduction filler is 5%-30% that of the paraffin alkane. The low-temperature thermal control phase change microcapsule prepared by the invention is solid-solid phase change, the problems of fusion flowing and permeation migration are avoided, the range of phase change temperature is wide, the latent heat is large, the condensate depression is small, the phase change process is stable, the phase change is reversible, the material further has a higher heat conduction property, and as a relatively ideal thermal control phase change material, the low-temperature thermal control phase change microcapsule can be widely used in the fields of thermal protection, like aerospace, precise instruments, and electron devices.

The invention relates to a daily used vacuum cup, in particular to a compound-phase variable-speed cooling constant-temperature cup. The solid-liquid compound-phase variable-speed cooling constant-temperature cup comprises a cup lid and a cup body, wherein the cup lid is in sealed connection with the cup body, the cup body comprises an inner cup wall, a middle cup wall and an outer cup wall, the internal cavity of the inner cup wall forms a beverage containing cavity, the airtight cavity between the inner cup wall and the middle cup wall is filled with inorganic hydrous salt compound phase change liquid, the airtight cavity between the bottom of the inner cup wall and the bottom of the middle cup wall is designed into a phase change alloy rapid-cooling interlayer, and the phase change alloy rapid-cooling interlayer is provided with built-in low-melting-point phase change alloy. In a solid-liquid compound-phase variable-speed cooling microwave heating constant-temperature cup, the airtight cavity between the inner cup wall and the middle cup wall is filled with inorganic hydrous salt compound phase change liquid to form a phase change liquid heating cavity, one or more distributed rod-like microwave antennae are arranged in the phase change liquid heating cavity, and a solid-state microwave power source, a power supply part and a control system are arranged in a cup base.

The invention is about the blast furnace gas oven-dry decontamination dedusting technology. The dust-laden gas enter the gravity dust separator firstly, then enter the every dedusting subsystem pipes through the main pipe, next to enter the every bag-type dust collector to remove the dust precisely, then the cleaning gas enter the system purified gas pipe to enter the supplying purified gas pipe net through the dry-type turbine or the reducing valve. The bag-type dust collector system includes at least more than three dedusting subsystems which include at least more than five dedusting boxes, and the shutoff device is installed in the gas pipe. The invention achieves the blast furnace gas oven-dry bag-type dedusting, so it can increase the gas latent heat and the electric power generation ratio.

The invention provides a phase change energy storage material which has the characteristics of phase change temperature of 25-28 DEG C, great potential heat, small super-cooling degree and high stability. The phase change energy storage material is at a solid state at the temperature which is lower than 25-28 DEG C; when the temperature is higher than 25-28 DEG C, the potential heat is absorbed to carry out phase change to be changed into a liquid state. Dodecanol and paraffin are used as main raw materials, and a cross-linking agent, an initiator, an emulsifying agent and a nucleating agent are used as auxiliary materials, the main raw materials are reacted with the auxiliary materials, and then carbon chain recombination happens under the effect of the initiator, a silane coupling agent, the emulsifying agent and the like to prepare the product. The phase change temperature is 25-28 DEG C and the phase change potential heat is 156-163 KJ/Kg. The phase change energy storage material has the characteristics that the phase change temperature is the room temperature, the potential heat is high and the raw materials are wide and cheap; the material is not layered and has no sediments after being repeatedly subjected to the phase change for a plurality of times; and the potential heat value is stable and the super-cooling degree is less than 1 DEG C. After the material is packaged, the material can be combined with a building wall body and the property of absorbing the potential heat enables the wall body to have the function of adjusting the temperature.

The invention relates to high-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and a preparation method thereof. The high-thermal-conductivity composite phase change energy storage microcapsules comprise organic phase change capsule cores and inorganic high-thermal-conductivity capsule walls, wherein the organic phase change capsule cores are prepared from two or more than two of alkane, fatty acids, polyether and derivatives of the polyether. The preparation method comprises the steps of: (1) preparing a capsule core material with an adjustable phase-transition temperature, (2) preparing an O/W (oil-in-water) emulsion; and (3) preparing the phase change energy storage microcapsules: dropwise adding tetraethylortho silicate to the emulsion, stirring for 1-6 hours at a speed of 300-1000rpm, aging and drying, thus obtaining the stable phase change energy storage microcapsules. The high-thermal-conductivity composite phase change energy storage microcapsules have the characteristics of high energy storage, high thermal conductivity, stable performance, designable and adjustable phase change temperature, suitability for various processing and the like and can be popularized and applied in industries such as energy-saving walls of buildings, commodity storage and transportation, medical equipment, food packaging and thermoregulation clothes.

The invention discloses thermal cut-off equipment of a high-temperature superconducting binary current lead, which comprises a liquid nitrogen tank and a liquid helium tank, wherein liquid nitrogen and liquid helium are respectively filled in the liquid nitrogen tank and the liquid helium tank. The invention is characterized in that the liquid helium tank is communicated with a current lead neck tube, and a high-temperature superconducting lead is arranged in the current lead neck tube; the middle part of the current lead neck tube is connected with a heat conducting disk which is embedded in a center hole of the liquid nitrogen tank, and the upper end surface and the lower end surface of the heat conducting disk are respectively connected fixedly with the tank wall of the center hole of the liquid nitrogen tank; a plurality of vertical through holes are arranged between the upper end surface and the lower end surface of the heat conducting disk and are respectively used as a current lead channel, a measuring lead channel and a cold helium returning channel; and a plurality of liquid nitrogen cooling tanks are arranged at the cylindrical side surface of the heat conducting disk along the horizontal direction, and the horizontal liquid nitrogen cooling tanks are communicated with the liquid nitrogen tank. The thermal cut-off equipment of the high-temperature superconducting binary current lead performs the characteristics of large potential heat and good heat sink effect in the process of liquid nitrogen cooling to improve the temperature margin of the high-temperature superconducting lead, thereby greatly increasing the operating stability and the security of the high-temperature superconducting lead, and reducing the heat leakage of the current lead, the measuring lead and the current lead neck tube for the liquid helium tank.

The invention relates to a lithium battery module for replacing a lead-acid storage battery of an automobile. The lithium battery module comprises an upper cover, a shell, a seal grid plate, lithium batteries, insulated phase-change materials, a battery fixedly-held assembly, heat-conducting rib plates, a battery protection plate and a self-restoring circuit protector, wherein the upper cover and the shell are mechanically connected to form a seal cavity, the seal grid plate is arranged in the shell and divides the seal cavity into an upper-half seal cavity and a lower-half seal cavity, the insulated phase-change materials are filled in the lower-half seal cavity, multiple lithium batteries are fixedly connected through the battery fixedly-held assembly and are arranged in the insulated phase-change materials, the heat-conducting rib plates are arranged between each two adjacent lithium batteries, and the battery protection plate and the self-restoring circuit protector are arranged in the upper-half seal cavity; a circuit is mounted in the upper-half seal cavity, one end of the circuit penetrates through the seal grid plate and is connected with the electrodes of the lithium batteries, and the other end of the circuit is connected with an external pole column through the upper cover. Compared with the prior art, the lithium battery module has the advantages of long service life, good power property, small volume, high integration and the like.

The process of preparing nanometer capsule phase change material emulsion includes adding the oil phase liquid compounded with olefin monomer, hydrophilic monomer, alkane, initiator and n-lauryl mercaptan into the mixed liquid of emulsifier and deionized water via stirring and ultrasonic dispersing to obtain micro emulsion, introducing nitrogen to the micro emulsion system to eliminate oxygen via stirring, reflux condensing, heating to 65 deg.c and constant temperature polymerization reaction for 5 hr, and cooling naturally to room temperature to obtain the nanometer capsule phase change material emulsion. Thus prepared nanometer capsule phase change material emulsion has nanometer size, stable performance, great phase change enthalpy and wide application in latent heat functional hot fluid, heat accumulating and temperature regulating fabric, energy saving building wall and other fields.

The invention discloses a method for preparing a composite phase-change material used at a temperature of 2-8 DEG C. The method comprises the following steps of: (1) placing an anhydrous-sodium-sulfate raw material in a blast drying oven, and drying to be constant weight at a temperature of 90-110 DEG C; (2) according to the parts by mass of all raw materials, respectively weighing 30-50 parts ofanhydrous sodium sulfate, 5-10 parts of sodium chloride, 10-20 parts of potassium chloride, 10-20 parts of ammonium chloride, 1-5 parts of boric acid, 1-5 parts of borax, 0.5-5 parts of sodium carboxymethyl cellulose, 0.5-5 parts of hydrophilic aerogel for mixing, grinding in a ball grinder till the granularity of the mixture is 50-300mu m; (3) adding 20-50 parts of distilled water into the groundmxiture, stirring to be fused slurry at a temperature of 40-60 DEG C. The method disclosed by the invention has the advantages of simple process and lower cost; the prepared phase-change material hasthe advantages of low supercooling degree, high energy-storage density, no-phase separation, stable property and capabilities of fast cold storage and slow cold release.

The invention provides a method for assisting gravity drainage by means of a solvent and superheated steam. The method comprises the steps that injection-production pattern deployment is conducted; injection-production pattern is preheated, so that hot inter-well communication and pressure communication are built; an SAGD stage is started, wherein the stage comprises the steps of injecting the superheated steam and conducting SAGD initial production; after SAGD initial production is finished, the vaporized solvent and the superheated steam are injected, and SAGD mid-term production is conducted; after SAGD mid-term production is finished, the superheated steam is injected till the SAGD life cycle is finished. According to the technical scheme, the synergistic effects of solvent dilution solution viscosity reduction and permeable mudstone thin interlayer and superheated steam thermal viscosity reduction are fully played, the preheating time is greatly shortened, the oil production is increased, the steam injection and sewage treatment capacity are lowered, and the economic benefit is improved finally.

The invention relates to a method for preparing nanocapsule powder of a urea-formaldehyde-resin-encapsulated phase-change material, which comprises the following four steps: (1) preparing prepolymer; (2) preparing miniemulsion; (3) carrying out a polymerization reaction; and (4) extracting capsule powder. Compared with the prior art, the product obtained through the method provided by the invention has great latent heat and high thermal conductivity; and the adopted urea-formaldehyde-resin shell material is very cheap, so that the cost for encapsulation of the phase-change material is greatlylowered, and the encapsulated phase-change material can not outflow when the phase change occurs. The product can be applied to the fields of coating, spinning and the like.

The invention provides a cold accumulation material, which is prepared from at least one of a first group of substances, a second group of substances, a third group of substances, a fourth group of substances and a fifth group of substances, wherein the first group of substances comprise n-nonane, n-octane and hexamethyl disiloxane; the second group of substances comprise p-cymol and decamethyl tetrasiloxane; the third group of substances comprise o-cymol, vinyltoluene, ammonia and R1233ze(E); the fourth group of substances comprise 1,1,2,2,3-pentafluoropropane, 2H,3H-perfluoropentane, butylbenzene and octamethyl trisiloxane; the fifth group of substances comprise tetrafluoromonochlorethane, 1,1,1,3,3,3-hexafluoropropane, propanone, perfluoroethane and pentafluoroethane. Through the cold accumulation material, according to a different required temperature zone, the cold accumulation material which is prepared from a different monomer or a plurality of substances can be selected, can be used for meeting the demand of the temperature of subzero 60 to subzero 100 DEG C, and adapts to a plurality of scenes. In addition, the invention also provides a cold accumulator and a cold accumulation type refrigeration device.

The invention provides a binary aliphatic acid/PMMA shape-stabilized phase change material and a preparation method thereof. The shape-stabilized phase change material is prepared from the following raw materials: 30 wt%-70 wt% of a binary aliphatic acid eutectic mixture, 30 wt%-70 wt% of MMA (methyl methacrylate), and 0.3 wt%-0.7 wt% of AIBN (azodiisobutyronitrile). The preparation method comprises adding MMA and AIBN in a water bath of 80 DEG C, stirring for 25 min, then adding molten binary aliphatic acid, intensely stirring for 5 min; pouring the mixture into a die, sealing the die, putting the die in a water bath of 60 DEG C for 2 hours, and then putting the die in a water bath of 90 DEG C for 1 hour to obtain the binary aliphatic acid/PMMA shape-stabilized phase change material. The shape-stabilized phase change material has an appropriate phase change temperature and large phase change latent heat, is good in heat stability, and has good application prospects.

The invention provides a multistage high-efficiency heat recovery type air source heat pump grain drying machine. Moisture removal air is dedusted through spray water, and exhaust dustless hot air enters a drying unit through an air total-heat exchanger so as to provide a heat source for drying. The multistage high-efficiency heat recovery type air source heat pump grain drying machine is high inheating capacity, high in evaporation efficiency and simple to operate, and comprises N compressors which are the first compressor, the second compressor to the N compressor, wherein N is a natural number not less than 2. A corresponding condenser, an expansion valve and an evaporator are independently arranged for each compressor; an outlet of each compressor is connected with a working medium inlet of the corresponding condenser; a working medium outlet of each condenser is connected with the corresponding expansion valve and then is connected with the corresponding evaporator; a working medium outlet of each evaporator is connected with a working medium inlet of the corresponding compressor; all condensers are arranged in the corresponding condenser areas; and a first heat exchange pipeline sequentially covers a shell area of each condenser.

The invention relates to a preparation method of a low-melting-point alloy phase change material, and belongs to the technical field of preparation of phase change materials. The method comprises the following steps: removing surface oxides of raw materials Ga, In and metal A, wherein the metal A is one or more of Sn, Bi, Zn and Al; adding Ga, In and metal A into a smelting medium, increasing the temperature to a preset temperature at a constant speed, conducting heat preservation for 4-6 hours, and conducting metal alloying to obtain an alloying system, wherein the smelting medium is glycerol or silicone oil; and heating the alloying system to the preset temperature, performing uniform stirring and mixing to performing full alloying, and then adding an ice-water mixture into the alloying system to quickly cool an alloy sample and obtain the low-melting-point alloy phase change material. According to the method, the glycerol or silicone oil is adopted as the smelting medium, the problems of oxidation, insufficient alloying and the like of low-melting-point alloy in the smelting process can be effectively solved, the low-melting-point alloy phase change material has greater latent heat in unit volume, the heat capacity of the low-melting-point alloy phase change material can be greatly improved, the volume proportion of the phase change material is effectively reduced, and better stability and higher heat conductivity are achieved.

The invention discloses a spray evaporation foam metal heat transfer enhancement device for an air conditioning condenser, and the device is composed of a shell, a condenser coil, a shower nozzle, a water pump, a water tank, a cooling fan and a controller, wherein the condenser coil passes through the heat transfer surface of the shell, the shower nozzle is arranged on the air inlet side of the heat transfer surface and connected with the shower nozzle, the pump is connected with the water tank, the heat transfer surface of the shell cavity is provided with a temperature sensor, the cooling fan is arranged above the space surrounded by the shell, the temperature sensor and the water pump and the cooling fan are controlled by the controller; the heat transfer enhancement device has the beneficial effect of simple structure and being convenient to use, besides the device is characterized by large potential heat, small granule and large surface area due to water drop gasification, the foam metal has the excellent physical properties such as multiple pores, vibration attenuation, damping, sound absorption, sound insulation and heat dissipation and has the strong capillary action, thereby effectively improving the problem that the condenser has the the weak cooling effect and the great noise and realizing the high-efficiency heat transfer requirement of the air conditioning condenser.

The invention discloses a cold chain coolant that is characterized by being prepared from, by mass, 5%-10% of metal chloride, 1%-4% of ammonium chloride, 1%-3% of alcohol, 0.1%-0.3% of active silicon,2%-5% of borax, 0.3%-1% of docusate sodium, 5%-10% of amino-terminated polyethylene glycol amidated pectic acid, 2%-4% of aleuritic acid group organic salt and the balance water, wherein the aleuritic acid group organic salt is prepared by carrying out ion exchange reaction on aleuritic acid and choline. The invention further discloses a preparation method of the cold chain coolant. The cold chain coolant disclosed by the invention has the advantages of large latent heat, small supercooling degree, good heat transfer, good cold chain effect, small toxicity and pollution, high cold chain efficiency and long cold storage time.