128results about How to "High latent heat" patented technology

A system and method of reducing consumption of electricity used to cool electronic computer data center, networking, and telecommunications equipment, and to reduce the incidence of thermal failure of electronic components, includes provision of one or more partitions to reduce the volume of the cooled environment supplying coldest possible cooled air from air conditioning systems to a chamber adjacent to racks containing the electronic components, preventing dilution of the supplied cooling airflow by warmer air from outside of the reduced volume environment, and controlling the delivery of cooling air flow through the reduced volume of the cooled environment.

Methods and systems are disclosed for phototreatment in which replaceable containers comprising one or more adjuvant (consumable or re-useable) substances are employed. The adjuvant substance can be, for example, a topical substance or a coolant. Systems are disclosed for using a topical substance to detect contact of a phototreatment device with a tissue, detect speed of a phototreatment device over the tissue, detect regions of tissue that have been treated by a phototreatment device and/or to provide other benefits to the tissue such as improved skin tone and texture, tanning, etc. Safety systems are also disclosed that ensure that a proper consumable substance and/or container is connected to a phototreatment device and/or directed to a proper target. Additionally, cooling systems and methods that utilize phase change materials for extracting heat from a light generating device are disclosed.

A polymerization reactor for exothermic liquid phase reactions comprises a reaction zone which is divided into a plurality of channels by thermally conductive heat transfer fins which are conductively mounted on one or more heat pipes for the removal of heat of reaction from reactants and reaction products flowing between the heat transfer fins. The reactor of the invention is capable of maintaining essentially isothermal conditions without the use of complicated and maintenance intensive agitators. The reactor is particularly useful when viscosity of the reactants and/or reaction products is high, when the reaction conducted has a fast reaction rate and when consistent polymer properties are desired.

Systems and methods of operating an engine, the engine including an injector configured to directly inject fuel into an engine cylinder. One example method comprises, during an engine cold start, performing compression direct fuel injection, and retarding a timing of the compression injection as a fuel alcohol content of the fuel increases.

A cooling method and apparatus including a mist-generating device is configured to generate a mist of droplets from water, dielectric liquids or any cooling liquids. The mist is produced having such volume, momentum, concentration and quality of scale so as to deter or avoid impingement or deposition of the mist droplets on a surface to be cooled or on surfaces within a heat dissipating system to be cooled. Effective cooling is provided by the high latent heat of vaporization of water or other suitable fluid, while surfaces normally subject to possible damage by wetting are protected from harmful contact from the fluid.

Tangential flow technology and electronic ultrasonic atomizing devices may be used as one possible means to generate the required mist and control mist volume, momentum, concentration and quality. Other variables may be controlled to enhance the cooling of the mist, such as flow patterns and flow directions of the mist. Vaporized mist may be condensed and recovered. The cooling method may be used to replace or complement existing air-cooled systems.

A low volume, high capacity latent heat storage device is achieved in a construction including a salt case (12) with an optional outer jacket (10) surrounding the salt case (12) in spaced relation thereto to define an insulating space (14) between the two. Inlet and outlet conduits (38), (42), (44), (46), extend from the exterior of the outer jacket (10) to the interior of the salt case (12) and at least one tube (20) is located within the salt case and has a plurality of straight, parallel runs (21) defining a matrix with an exterior and a phase change material is sealed within the tube (20). The tube runs (21) inwardly of the matrix exterior are in a regular or equilateral polygonal pattern with each run (21) abutting a plurality of adjacent runs (21) and each run (21) at the exterior of the matrix additionally engaging the salt jacket (12). The runs (21) have cross-sectional shapes such that flow spaces (102, (104) exist between the runs (21) and between the salt jacket (12) as well between adjacent runs (21). The flow spaces (102), (104) are in fluid communication with the inlet and outlet conduits (38), (42), (44), (46).

The invention provides a graphene-based heat conduction silica gel phase change composite material comprising silicon substrate and heat conduction phase change material dispersed in the silicon substrate. The heat conduction phase change material comprises heat conductive filler and microencapsulation phase change material, and the heat conductive filler is selected from one or more of graphene, alumina powder, aluminium nitride powder and carbon nanotube. The composite material adds the heat conductive filler into silica gel, and can form a complete heat conduction access in the silica gel, so that the thermal conductivity of the composite material is improved. Moreover, the microencapsulation phase change material is added into the silica gel, the latent heat of the composite silica gel material is improved, and a part of heat can be stored as heat conduction. Meanwhile, the heat conduction is effective as the synergism of heat conduction silica gel and phase change material.

The evaporative cooling system comprises: evaporative cooling modules, a liquid supply system which comprises a liquid supply pump and a tube, and which supplies a refrigerant liquid to the evaporative cooling modules; an air supply system which comprises air supply tubes, and which supplies warm air to the evaporative cooling modules; an exhaust system which comprises an exhaust pump and a tube, and which exhausts air containing a refrigerant vapor from the evaporative cooling modules; a reflux system which comprises a primary heat exchanger and a reflux tube, and which condenses the refrigerant vapor to return the condensed refrigerant liquid to the liquid supply system; and a heat exhaust system which comprises a secondary heat exchanger and tubes, and which discharges heat absorbed from the primary heat exchanger.

The non-combustion-type flavor inhaler (100) is provided with a heat source (50) and a holding member (30) for detachably holding the heat source (50). The heat source (50) comprises a latent heat storage material containing a sugar alcohol of four or more carbons.

There is provided a start control apparatus for an internal combustion engine (1) which starts the engine with injecting fuel to each cylinder (2) of the internal combustion engine in an intake stroke. The apparatus comprises a stop position distinction device (20) which distinguishes a piston position at a time of a stop of the internal combustion engine, and a fuel injection amount control device (20) which specifies a cylinder in which a piston stops in the intake stroke based on a distinction result of the stop position distinction device and which increases a fuel injection amount at starting for the specified cylinder more than a fuel injection amount for other cylinders.

Provided is a battery system in which an interior part of a battery structure includes phase-change particles including a capsule and phase-change materials. The phase-change materials have a high latent heat of phase change at a specific temperature, and are encapsulated in the capsule. The capsule is made of an inert material. The battery system in accordance with the present invention can prolong a service life of the battery by inhibiting temperature elevation inside the battery under normal operating conditions without substantial effects on size, shape and performance of the battery, and further, can inhibit the risk of explosion resulting from a sharp increase in temperature inside the battery under abnormal operating conditions, thereby contributing to battery safety.

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.

Disclosed is a method for manufacturing a disintegrative core for use in high pressure casting. The disintegrative core can be applied where a light metal such as an aluminum alloy or magnesium alloy is subjected to high pressure casting, such as die casting or squeeze casting and is manufactured from a water-soluble salt which is high in latent heat and ranges, in melting point, from 280 to 520° C. and, in heat transfer coefficient (kappa), from 9.8x10<-2 >to 1.2x10 W/m.° C. The water-soluble salt, alone or in combination with a fine hard powder, is melted and solidified in a core mold. Alternatively, the melt is processed into a fine powder which is then molded in a core mold. The method can be applied for the manufacture of complex shapes of cores. Also, disclosed is a method for extracting such a core from a high pressure molded product.

The invention relates to a phase change energy storage plant fiber composite heat insulation board and a preparation method of the composite heat insulation board; the phase change energy storage plant fiber composite heat insulation board is prepared from the raw materials in parts by weight: 30-50 parts of phase-change material and 50-70 parts of plant fiber, wherein the phase-change material is one selected from mirabilite, calcium chloride hexahydrate, n-caprylic acid and butyl stearate; crop straw, straw or Chinese alpine rush is adopted as the plant fiber, so that the local materials can be used, the waste straw resource is utilized, and the waste is changed into valuable; the energy storage characteristic of the phase-change material is combined, so that energy conservation and consumption reduction are realized; and the produced composite heat insulation board has the advantages of being fireproof, flame retardant, light in mass, high in compression strength, good in energy-saving effect, non-toxic, harmless and environment-friendly, and has the functions of heat insulation and sound insulation.

The invention provides a heat conduction phase change composite material and a preparation method thereof. The heat conduction phase change composite material comprises a substrate material and a heat conduction phase change material dispersed in the substrate material, wherein the heat conduction phase change material comprises a heat conduction filling material and a microcapsule phase change material; the heat conduction filling material is a mixture of grapheme and carbon nanometer tubes. The heat conducting filling material, the microcapsule phase change material and the substrate material are used for preparing the heat conduction phase change composite material by a method of being mixed, defoamed and then cured. The heat conduction filling material formed by the grapheme and the carbon nanometer tubes is added into the substrate material; the agglomeration phenomenon of the grapheme can be reduced; in addition, the grapheme and the carbon nanometer tubes are matched in a specific proportion; the heat conductivity of the composite material can be enhanced in a cooperated way, so that the heat conductivity can reach 15 to 20w/(m*K); the microcapsule phase change material is added into the substrate material, so that the latent heat of the composite material is improved; the stored energy can be as high as 90 to 98 KJ/kg.

The invention belongs to the field of nano porous materials, and relates to a preparation method of a graphene aerogel phase change energy storage material. The preparation method comprises the following steps: mixing graphene oxide powder with a solvent, then adding a phase change material, obtaining a wet gel by adopting a hydrothermal reduction method, and finally carrying out washing, drying and other processes to finally prepare the phase change energy storage material with graphene aerogel as a structural framework and the uniformly distributed phase change material. The method has the advantages of simple preparation process, favorable leakage resistance, high latent heat, high heat conductivity and the like, and can easily implement large-scale production.

The invention relates to a high-temperature electronic packaging substrate material device based on gas-liquid phase change and a preparation method thereof. The device comprises a substrate shell forming a closed cavity, a porous medium which covers the inner wall of the substrate shell and is provided with a gas flow channel, and a liquid filling port which is formed in the substrate shell and is connected with the porous medium, a power device is further arranged on the upper surface of the substrate shell, and a liquid working medium capable of generating gas-liquid phase change after being heated is infiltrated in the porous medium. Compared with the prior art, the novel packaging substrate material developed by the invention can meet the requirements of high-power third-generation semiconductor chip-level and module-level high-temperature packaging, namely, reliable packaging can be carried out at the high temperature of 400 DEG C, in addition, the ultrathin packaging substrate shell can be realized, and the heat transfer resistance is reduced; and stress and the like caused by uneven temperature distribution and mismatching of thermal expansion coefficients in a high-temperature working state can be reduced.

The invention provides a heat transfer composition comprising (i) from about 45 to about 75% by weight 2,3,3,3-tetrafluoropropene (R-1234yf); and (ii) from about 25 to about 55% by weight 1,1,1,2-tetrafluoroethane (R-134a). A heat transfer composition comprising, optionally consisting essentially of, (i) from about 20 to about 90% by weight R-1234yf; (ii) from about 10 to about 60% by weight R-134a; and (iii) from about 1 to about 20% by weight R-32 is also provided.

Methods and devices for controlling the temperature of a Li-ion battery cell are provided. A method can included combining the electrolyte and electrode components of a Li-ion battery with nanoparticles comprising of a phase change material with a melting point of 80° C. or greater, encapsulating the phase change material in an encapsulating material that has a melting point of 120° C. or greater.

The invention relates to a radiation sensor device comprising a housing, a radiation sensor secured with respect to a first portion of the housing and a heat pipe in thermal communication with the first portion of the housing, the heat pipe being configured to transfer heat from portion of the house to a second portion of the housing remote from the first portion of the housing. The heat pipe may be used advantageously to transport or transfer heat away from the sensor components of the device to an area remote therefrom. The heat pipe can be used to transfer heat at a rate that is thousands of times higher than copper. The radiation sensor device may be used in an ultraviolet radiation fluid treatment system such as an ultraviolet radiation water disinfection system.

The invention discloses an electrolytic hydrogen fuel bi-motor. The electrolytic hydrogen fuel bi-motor comprises a water tank, an HHO generator, a motor and a constant-current pulse width regulator which is used for controlling current flowing into the HHO generator, wherein a liquid outlet I, a liquid inlet I and a gas vent are formed in the water tank; the HHO generator comprises multiple white steel sheets arranged in a sealed shell and an upper cover and a lower cover which press the multiple white steel sheets tightly; the multiple white steel sheets are arranged in a stacked manner; each white steel sheet is provided with a through hole I and a through hole II; a high temperature-resistant insulation pad is arranged between every two adjacent white steel sheets; and a cross-shaped through hole is formed in each high temperature-resistant insulation pad. The invention further discloses a use method of the electrolytic hydrogen fuel bi-motor. According to the electrolytic hydrogen fuel bi-motor, hydrogen generated through electrolysis of electrolyte is used as fuel of the motor in an electrolysis manner; the fuel saving rate can reach 20%-35%; the electrolytic hydrogen fuel bi-motor is applicable to various large, medium and small automobiles, steamships, small fishing vessels, fixed diesel engines, unmanned aerial vehicles and the like; and the electrolytic hydrogen fuel bi-motor is not limited by various automobiles or gasoline and diesel vehicles.