1332results about How to "Reduce the temperature" patented technology

Disclosed is a free flowing dry back-up material which comprises: from 67 to 96% by weight of fly-ash; from 2 to 15% by weight of a heat sensitive binder such as boric acid; from 2 to 7% by weight of a non-wetting agent such as calcium fluoride; from 0 to 10% by weight of a heat expandable material, viz. a material expandable as a function of the temperature such as vermiculite or graphite; and from 0 to 1% by weight of a dust suppressant such as kerosene. This material which is useful in particular in the aluminum industry has the advantages of being water free and free flowing, such avoiding the use of vibrator to position it into a shell. It also has a low density and a low thermal conductivity. Moreover, it is organic free as compared to the existing materials which use an organic binder to ensure a low temperature set; and it sets at a temperature lower than 400° F.

A method for reducing the amount of carbon monoxide and oxygen emissions in a hydrocarbon combustor in a gas turbine engine by feeding hydrocarbon fuel and an oxidizer component into the head end of the combustor while also injecting substantially inert gas into the combustor with the fuel and oxidizer; forming a combustor exhaust stream that mixes with the recycle; cooling the combustor exhaust; detecting the amount of carbon monoxide and oxygen in the exhaust and adjusting the amount of fuel, oxidizer and inert gas feeds based on the detected amounts.

A centrifugal air/oil separation system communicates with bearing cavities of the engine and substantially isolates separated oil from contacting the gearbox.

A heat dissipation device and a luminaire comprising the same are provided. The luminaire comprises a first circuit board, a light-emitting diode, the heat dissipation device, a circuit device, a bulb cap. The first circuit board has a first surface and a second surface opposite to the first surface. The light-emitting diode is disposed on the first surface and electrically connected to the first circuit board. The heat dissipation device comprises a fan module and a plurality of heat dissipation channels. The fan module is disposed on the second surface of the first circuit board and electrically connected to the first circuit board. The heat dissipation channels are connected to an atmosphere, wherein the fan module is adapted to generate airflow to pass the heat dissipation channels to the ambient. The circuit device is electrically connected to the first circuit board, and the bulb cap is electrically connected to the circuit device to provide power to the first circuit board and the light-emitting diode.

The invention discloses a warm-mixed asphalt additive and a preparation method thereof. The additive is prepared by the following steps: adding deionized water into prepared polyvinyl alcohol water solution, then adding rosin quaternary ammonium salt, aromatic quaternary ammonium salt emulsifier, aliphatic quaternary ammonium salt emulsifier and nonionic surfactant into the water solution in turn, stirring and dissolving the mixture, adding prepared polyacrylamide water solution and triethanolamine into the mixture, and mixing and stirring the mixture till the mixture is evenly dissolved so as to obtain a finished product. During application, when the temperature of the asphalt mixture reaches 110 to 130 DEG C, 5 percent of the diluent of the additive is added by the mass of asphalt in a spraying mode so as to realize the warm mixing technology of mixing and spreading the asphalt mixture; and test data show that various road indexes of the warm-mixed asphalt mixture are not lower than that of hot-mixed asphalt mixture under the condition that the mixing and molding temperature of the warm-mixed asphalt mixture is obviously reduced relative to the hot-mixed asphalt mixture.

Systems and methods for collecting solar energy and converting it to heat, mechanical work, or electricity on a small scale and utilizing one or more system components originally adapted for use in a non-solar-power-generation application are described. Solar energy is used to heat a fluid that is part of a solar energy collector. This fluid transfers heat to the working fluid of thermodynamic engine, which converts some of the heat into mechanical work or electricity. One or more system parameters are monitored and controlled to enable improved efficiency under variable environmental conditions.

Disclosed is a packaged chilling system for providing chilled water to an air conditioning system for a building that includes: a duct system; an air handling system; and a water chilling system; wherein: the duct system is in operable communication with a building that has a plurality of rooms, at least one of the rooms having a sensor for detecting the room air temperature in the room, the duct system comprising at least one supply duct for directing low temperature air from the air handling system to the building and at least one return duct for directing high temperature air from the building to the air handling system; the air handling system includes a plurality of air handling units, each air handling unit comprising an air inlet for receiving high temperature air from the building, a cooling coil that includes at least one conduit through which chilled water flows, the cooling coil having multiple passes and positioned for heat transfer contact with the high temperature air, and a fan for increasing the velocity of air in the air handling unit; the water chilling system is installed at a location proximate the building, and is operably connected to the air handling system; and the water chilling system includes a moveable support structure comprising a support base on which a plurality of water chilling system components are affixed, the components including at least one water chiller for lowering the temperature of water from a high temperature to a low temperature. This packaged chilling system may also be used to provide chilled water to industrial processes such as chemical plants, automotive plants, textile mills, paper mills, computer cooling, and factory air-conditioning.

Present invention suppresses undesirable effects of the bubbles trapped in a silica glass crucible on single crystallization during the pulling process under a high-temperature load. When raw material powder is melted in a mold 1, graphite components of electrodes and impurities contained in the raw material are removed by introducing hydrogen gas and/or oxygen gas immediately after the start of arc discharge. Graphite and impurities are prevented from entering the product crucible, thereby suppressing the volume increase rate of the bubbles and reducing the inner pressure of the bubbles. Gases remaining in voids of an accumulated layer of silica powder formed inside the mold 1 can be replaced with helium gas, by supplying helium gas to the accumulated layer from the mold 1.

Disclosed is a turbulated arrangement of thermoelectric elements for utilizing waste heat generated from a turbine engine. The turbulated arrangement of thermoelectric elements is located within the turbine casing at a heat exhaust end of the turbine engine. The turbulated arrangement of thermoelectric elements convert heat exhaust generated from the turbine engine into electrical energy. In one embodiment, the electrical energy generated from the turbulated arrangement of thermoelectric elements can be used to power electrical components located about the turbine engine.

The invention provides an LED backlight module and a temperature control method thereof, and temperature of the LED backlight module is controlled within a safe range. Concretely, the temperature control method of the LED backlight module comprises: brightness BL of the LED backlight module is obtained; the temperature of the LED backlight module is measured; the temperature of the LED backlight module is compared with a preset temperature; if the temperature of the LED backlight module is more than or equal to the preset temperature, an objective brightness BL' of the LED backlight module is computed; and the brightness of the LED backlight module is adjusted according to the objective brightness BL'. The temperature control method of the LED backlight module detects the temperature of the LED backlight module, and when the temperature of the LED backlight module reaches or exceeds a critical temperature, the temperature control method plans to further raise the temperature of the LED backlight module by lowering the brightness of the LED backlight module, and consequently protects the LED backlight module and avoids the reduction of the service life of the LED backlight module.

The invention discloses a method for internal chemical reaction in a battery via charging five times and discharging four times, belonging to the technical field of a battery. The battery is of a 12V12Ah type. The method adopts nine stages with charging five times and discharging four times, and comprises the following steps: immediately placing the battery in cooling water for cooling after acid is added, keeping the battery static for 2 plus 0.5 hours so that pole plates and separators are completely impregnated in sulfuric acid, powering for chemical reaction when the temperature of the battery is reduced to 30-40 DEG C, controlling the water temperature during the chemical reaction so that the temperature of the chemical reaction is no higher than 50 DEG C, starting the internal chemical reaction of the battery, charging a plurality of times with alternating current during the internal chemical reaction, and keeping the battery static for a certain period each time after charging. When the internal chemical reaction in the method is adopted for the battery, the initial capacity of the battery can be increased by 4.1-9.1 percent, the rate of utilization of active substances of the battery can also be increased, and the difference of PbO2 contents inside and outside the finished pole plates can be reduced from 17.1 percent to 5.6-7.6 percent after charging.

According to one embodiment, an apparatus and method for delivering one or more fluids to a microfluidic channel is provided. A microfluidic channel is provided in communication with a first conduit for delivering fluids to the microfluidic channel. Further, the apparatus and method can include a first fluid freeze valve connected to the first conduit and operable to reduce the temperature of the first conduit for freezing fluid in the first conduit such that fluid is prevented from advancing through the first conduit.

A battery charger controller is coupled to DC output terminals of an AC-DC (or DC-DC) adapter containing an AC-DC (or DC-DC) converter. A controlled current flow path between input and output terminals of the battery charger controller circuit is controlled to provide a substantially constant current to charge the battery to a nominal battery voltage. When a constant voltage output of the said adapter transitions to a value that limits available charging current to a value less than programmed constant charging current, current flow drive for the controlled current flow path is increased for a limited time interval. Thereafter, the controlled current flow path gradually reduces charging current as the battery voltage remains at its nominal battery voltage until the charge is complete or otherwise terminated.

The invention discloses an automotive braking energy recovering device. The outer lateral surface of a brakecaliper is provided with a notch, a friction wheel is arranged in the notch, projecting shafts at two ends of the friction wheel are arranged in holes of rolling bearings respectively, a hydraulic cylinder is fixed on an automotive chassis and arranged in a gap between a brake disc and the inner side of the brakecaliper, a piston is contacted with the inner lateral surface of the brakecaliper, the outer cylindrical surface of the brakecaliper is provided with a generator, and the shaft of the generator is provided with a first bevel gear meshed with a second bevel gear on the shaft at one end of the friction wheel. The device can recover most energy used in the braking of an automobile to supply power for vehicle-mounted electric appliances. Meanwhile, as most energy is converted into electric energy, heat energy generated during friction is reduced greatly, the temperature of the brake disc is reduced, and the service life of the brake disc is prolonged.

The invention belongs to the field of production of lithium ion batteries, in particular to a production process of a waterborne positive lithium ion battery. The production process comprises the following steps of: preparing an anode and a cathode, coating on the anode and the cathode, flaking, baking, preparing an electric core, testing short circuit, baking, putting a lower spacer into a shell, welding a bottom, putting an upper spacer and folding a positive lug, rolling a slot and testing short circuit; and injecting liquid, wiping the positive lug, welding the positive lug with a cover plate, folding the cover plate for covering, sealing, cleaning, standing, performing formation, standing and performing capacity grading. The anode comprises the following components in parts by weight: 100 parts of lithium iron phosphate, 3-4 parts of super conductive carbon black, 2-3 parts of conductive graphite, 3.5-4 parts of waterborne adhesive, 2.5-3 parts of NMP (N-methylpyrrolidone) and 80-85 parts of deionized water and is prepared by the following steps of: mixing the waterborne adhesive, the NMP and the deionized water; adding other raw materials; and stirring to obtain anode slurry. Compared with the conventional oily process of the lithium ion battery, the production process has the advantages of low energy consumption, high production efficiency, low product cost and the like.

Methods and systems for pumping compressible fluids in high pressure applications such as high-pressure liquid chromatography (HPLC) or supercritical fluid chromatography (SFC) applications are disclosed. An improved cooling device for a pump head for use in a supercritical fluid chromatography (SFC) system is described. A system for chilling a pumping system, includes a Peltier cooling element in thermal contact with a pump head, wherein the cooling element chills the pump head and a mobile phase fluid flowstream prior to the mobile phase fluid entering the pump; a fluid-cooled heat exchanger, attached to the Peltier cooling element, which removes heat from the cooling element using a circulating fluid; and a second heat exchanger which cools the circulating fluid.

The invention discloses a magnetorheological damper with convenience in assembly and disassembly of a coil component, relating to the technical field of magnetorheological dampers. The magnetorheological damper comprises a damping cylinder barrel, the coil component, a piston, a piston rod and a magnetorheological fluid, and is characterized in that the coil component is fixed on the outer side of the damping cylinder barrel, a magnetorheological fluid flow channel is arranged on the damping cylinder barrel, the coil component is not in contact with the magnetorheological fluid, the coil component is simple to assemble and disassemble, and the heat generated by energy consumption of an electromagnetic coil and the magnetorheological damper can be uniformly dissipated through the whole outer-layer cylinder barrel component and the coil component, thus the heat dissipation area is large, the temperature of the electromagnetic coil can be obviously reduced, and the service life of the electromagnetic coil can be prolonged.

A radiological imaging apparatus which can keep detectors at a low temperature, improve a time resolution and an energy resolution and perform an accurate diagnosis is provided. In the radiological imaging apparatus, an imaging apparatus imaging a testing subject supported by a bed couples a detector board having placed thereon radiation detectors detecting radiations emitted from the testing subject and a signal processing board having placed thereon a signal processing circuit processing detection signals of the radiation detectors via an intermediate board by connectors, and separates a detector space including the radiation detectors and a signal processing circuit space including the signal processing circuit.

The present invention relates to an active evaporation control method applicable to long-term on-orbit storage of a cryogenic propellant. According to the method, an active evaporation control device that comprises a composite thermal insulating layer, a steam cooling shield, a heat exchanger, a throttling assembly, a circulating pump, a bypass valve and a steam cooling shield exhaust valve is installed for a propellant storage tank. According to the present invention, with the developed active evaporation control method for a cryogenic propellant, discharge of a small amount of simple gaseous propellant can be achieved under the circumstance of uncertain gas-liquid position under microgravity condition, and pressure control on the cryogenic propellant storage tank and control on evaporation of the cryogenic propellant may be effectively realized under dual action by fully using thermodynamic enthalpy of the discharged cryogenic propellant after being throttled; and the method can allow effective reduction of evaporation loss of the cryogenic propellant in on-orbit use, thus prolonging the on-orbit mission time of a spacecraft.

The present invention provides a waterproof and heat-dissipating structure of a computer keyboard. The structure comprises a waterproof layer having an opening and a waterproof and air-permeable layer having the characteristics of waterproof, air permeability, thermal conductivity, temperature resistance, etc. and covering in the opening of the waterproof layer. The heat generated by electric components of a motherboard can be dissipated via the opening of the waterproof layer or a forced convection of sucking force of an internal fan, to enable cooling air to pass through the keyboard and penetrate the waterproof and air-permeable layer into the interior of the system to lower the motherboard's temperature. Thus, the efficacies of air-permeating and heat-dissipating are accomplished.

The invention provides an ecological permeable stratal configuration and belongs to the technical field of water collection and water intaking, and the ecological permeable stratal configuration can be used for solving the problems that because the existing urban surface soil layer is impermeable, moisture exchange and circulation can not be performed between the atmosphere and the soil layer, and after the situation lasts for a long time, the phenomena that the air in cities is extremely humid or extremely dry, and the water in soils below the surface soil layer continuously runs out are caused, thereby destroying urban ecological environments and affecting the human health, and the like. The ecological permeable stratal configuration comprises a surface layer and a water storing layer, wherein the surface layer is permeable and can cover the water storing layer, the water storing layer is arranged below the surface layer and can be used for storing water, and a permeation layer which can guide water flows to permeate downwards is arranged between the surface layer and the water storing layer in an appressed clamping mode. The ecological permeable stratal configuration has a good penetration function, and can achieve the rainwater drainage effect of a road surface; and meanwhile, when the outside is in hot dry climates, rainwater collected in the deep of the stratal configuration can be fed back to the air so as to achieve the effects of humidity adjustment and temperature reduction, thereby effectively solving two serious problems, namely, urban ponding and heat island effect.

The invention relates to nano lead-free soldering paste used for electronic element welding and surface packaging. The nano lead-free soldering paste consists of nano lead-free solder powder and soldering flux, and according to the mass percent, the nano lead-free soldering paste contains the following components: 85 to 94 percent of nano lead-free solder powder and 6 to 15 percent of soldering flux, wherein, the nano lead-free solder powder can be Sn-Ag, Sn-Ag-Cu, Sn-Bi, Sn-Zn, Sn-Zn-Bi, Sn-Co-Cu, Sn-Cu, Sn-In, or Sn-Sb. The nano lead-free soldering paste has all the basic properties of common lead-free soldering paste, and the melting point thereof is reduced. Compared with the common lead-free soldering paste, the nano lead-free soldering paste does not contain the toxic element of lead, thereby being applicable to the electronic packaging technology in the microelectronic industry.

An icemaker having a mold comprising at least one cavity and a cooling system. The cooling system has a first heat exchanger configured to have a medium flow there through. The first heat exchanger is in thermal communication with the mold to reduce the temperature of the mold below a predetermined temperature.

The invention discloses an integrated air conditioning unit applied to a subway station and a control method thereof. The air conditioning unit adopts an integrated structure and is divided into an upper layer and a lower layer, wherein an air supplying chamber is arranged on the upper layer of the air conditioning unit and comprises a new return air mixing section, a primary efficiency filter section, an electronic dust removal filtering section, a direct expansion evaporation section and an air supplying section; an air exhaust chamber is arranged on the lower layer of the air conditioning unit and comprises a new return air mixing section, a primary efficiency filter section, a direct evaporation condensing section, a compressor section and an air exhaust section; the direct evaporation condensing section of the air exhaust chamber is fixedly provided with an evaporation condenser with a spraying system; condensing water separated from the air supplying chamber enters the spraying system through a pipeline, is sprayed on the evaporation condenser and exchanges heat with a refrigerant in the evaporation condenser. The integrated air conditioning unit adopts an integrated structure, the condensing water of the evaporation evaporator is treated properly, the construction investment is reduced, the project price is reduced, and the air conditioning unit has the advantages of high efficiency, energy conservation and easiness in maintenance.

A method for preparing pigment-class titanium white powder and coarse titanium white utilizing titanium-contained blast furnace slag comprises the following process steps: water quenching, water cooling molten state titanium-contained blast furnace slag; grinding, grinding the slag into fine particles; single leaching, leaching the slag using sulfuric acid, pressure, normal pressure,temperature,60-90deg.C,mass concentration of sulfuric acid,5-35%,sulfuric acid dosage,0.6-1.0 theoretic value; two stage grinding-leaching, acid decomposing leached slag obtained by single leaching using grinding-leaching manner, pressure, normal pressure,temperature,50-100deg.C,mass concentration of sulfuric acid,30-65%,sulfuric acid dosage,1.0-1.5 theoretic value; preparing pigment-class titanium white powder, hydrolyzing leach solution from two stage grinding-leaching, filtering, washing, calcinating and surface treating to obtain pigment-class titanium white powder; preparing coarse titanium white, hydrolyzing leach solution from single leaching, filtering, washing, calcinating to obtain coarse titanium white.

The invention provides a method for preparing graphene, which comprises that: a supported metal catalyst containing metals, metallic colloid particles or metal salts are used, and graphene oxide and hydrogen are reacted in a solvent to prepare the graphene at the temperature of between -50 and 200 DEG C, preferably 20 to 120 DEG C. In the method, the temperature of hydrogen reduction is reduced by utilizing the catalyst, the method is easy to operate, and high-quality graphene capable of being dissolved in solution can be prepared massively. The prepared graphene has a few impurities, high yield and the characteristics of the graphene, and can be widely applied to preparing membrane electrode materials, lithium ion battery electrode materials, super capacitor electrode materials and the like.

Disclosed is a light emitting device including: a light emitting element including an LED chip and a phosphor layer provided at the light emitting side of the LED chip; and a substrate on which the light emitting element is bonded by an adhesive material. The adhesive material is an anisotropic conductive material.

The present invention provides a thermosensitive and biodegradable microgel and a method of synthesizing such microgels. The thermosensitive and biodegradable microgel is synthesized from a macromer comprising a thermosensitive block polymer co-polymerized with a biodegradable moiety encapped with a cross-linkable or polymerizable moiety at either end. The microgels of the present invention are synthesized by inverse suspension polymerization of the macromers. The microgels are biodegradable into components that are non-toxic and easily removed from the body. The microgel of the present invention is temperature sensitive and is “intelligent” as well as biodegradable. The microgels are preferably used for the controlled release of a drug or in tissue engineering. Most preferably, the microgels are suitable for the control release of biologically active substances such as proteins.

A latent curing agent that can cure a thermosetting epoxy resin in a relatively short period of time and at a relatively low temperature has a structure in which an aluminum chelating agent is held by a porous resin carrier obtained through interfacial polymerization of a polyfunctional isocyanate compound. The aluminum chelating agent is preferably a complex compound comprising β-ketoenolate anion ligands coordinated to aluminum. The latent curing agent can be produced by dissolving the aluminum chelating agent and the polyfunctional isocyanate compound in a volatile organic solvent, adding the resulting solution to an aqueous phase containing a dispersing agent, and stirring the resulting mixture to cause interfacial polymerization of the isocyanate compound while the mixture is being heated.

The invention relates to a steam condensation and recycling mechanism and steaming cooking equipment utilizing the same. The steam condensation and recycling mechanism comprises an exhausting draught fan (4), an exhausting channel (9) communicated with an air outlet of the exhausting draught fan (4), and a steam condensation cavity (10), wherein the steam condensation cavity (10) is provided with a steam air inlet (101) and an air outlet (102); the air outlet (102) is communicated with the exhausting channel (9); the steam condensation and recycling mechanism is characterized in that a cold air inlet (103) for introducing cold air is further formed in the steam condensation cavity; and the cold air inlet (103) is communicated with a cold air device. Compared with the prior art, the steam condensation and recycling mechanism has the advantages that the cold air inlet communicated with a cold air generation device is formed in the steam condensation cavity, so that the cold air is initiatively introduced into the steam condensation cavity; one part of the cold air is mixed with hot steam in the steam condensation cavity; and in a mixing process, the temperature of the steam is rapidly reduced, and the condensation effect is relatively good.