71 results about "Heat density" patented technology

Traffic between logic LSIs and memory is increasing year by year and there is demand for increase of capacity of communication between them and reduction of power consumption in the communication. Communication distances between LSIs can be reduced by stacking the LSIs. However, in a simple stack of logic LSIs and memory LSIs, it is difficult to ensure heat dissipation to cope with increasing heat densities and ensure transmission characteristics for fast communication with the outside of the stacked package. Also required is a connection topology that improves the performance of communication among the stacked LSIs while ensuring the versatility of the LSIs. An external-communication LSI, a memory LSI, and a logic LSI are stacked in this order in a semiconductor package and are interconnected by through silicon vias. Output terminals of multiple stacked LSIs are connected to an input terminal of a through silicon via of the stacked memory LSI and input terminals of multiple stacked LSIs are connected to an output terminal of a through silicon via of the stacked memory LSI, thereby directly connecting both of the external-communication LSI and the logic LSI to a wiring line of the memory LSI.

Temperature control in wafer-level burn-in is performed such that a set temperature used for the temperature control is corrected using a correction value calculated from the generated heat density of a wafer (101). Thus it is possible to eliminate a difference between the temperature of the wafer heated when an electrical load is applied and a control temperature for applying a thermal load, not depending on the distribution of good devices formed on the wafer (101) and the power consumption of the devices. As a result, the wear and burn of a probe can be prevented and highly reliable screening can be achieved.

A method of combustion and a reformer. The method includes combusting a fuel in combustion region of an up-fired or down-fired reformer and forming non-uniform injection properties with a wall-bound burner. The combusting is performed in a combustion region by burners, wherein at least one of the burners is the wall-bound burner forming the non-uniform injection properties. The non-uniform injection properties generate a heat profile providing a first heat density proximal to a wall and a second heat density distal from the wall, the second heat density being greater than the first heat density. The non-uniform injection properties are formed by injection properties selected from an angle of one or more injectors, a flow rate of one or more injectors, an amount and / or location of oxidant injectors, an amount and / or location of fuel injectors, and combinations thereof.

The invention discloses a test method for simulating a thermal environment in an aircraft flight process. The simulation of the thermal environment is realized through an arc tunnel test, and comprises the following steps: (1) a curve of heat flow density, changed along with the time, of an aircraft trajectory is fitted to a curve of heat flow density changed along with time in the arc tunnel test; (2) multiple time periods on the curve of heat flow density changed along with time in the arc tunnel test are read; each time period is corresponding to a heat flow density; and input parameters of laminated type arc heaters are set according to the time periods and the heat flow densities corresponding to the time periods; and (3) the input parameters corresponding to the multiple time periods are set in a controller in sequence to control the completion of the simulation test of the thermal environment in the aircraft flight process. The test method, provided by the invention, uses a computer for controlling, operates the thermal environment changed in the aircraft flight process in primary test process, and can simulate the thermal environment of an aircraft in the flight process more really.

Traffic between logic LSIs and memory is increasing year by year and there is demand for increase of capacity of communication between them and reduction of power consumption in the communication. Communication distances between LSIs can be reduced by stacking the LSIs. However, in a simple stack of logic LSIs and memory LSIs, it is difficult to ensure heat dissipation to cope with increasing heat densities and ensure transmission characteristics for fast communication with the outside of the stacked package. Also required is a connection topology that improves the performance of communication among the stacked LSIs while ensuring the versatility of the LSIs. An external-communication LSI, a memory LSI, and a logic LSI are stacked in this order in a semiconductor package and are interconnected by through silicon vias. Output terminals of multiple stacked LSIs are connected to an input terminal of a through silicon via of the stacked memory LSI and input terminals of multiple stacked LSIs are connected to an output terminal of a through silicon via of the stacked memory LSI, thereby directly connecting both of the external-communication LSI and the logic LSI to a wiring line of the memory LSI.

The invention belongs to the field of metallurgy continuous casting process numerical analog simulation, and discloses a method for determining heat flux density of a continuous casting crystallizer based on flux film and air gap dynamic distribution. According to a crystallizer copper plate structure and the size of the section of a continuous casting, a two-dimensional transient heat / force coupling finite element model with a 1 / 4 blank shell-crystallizer cross section system as a computation object is built, and the temperature of the surface of the blank shell, the temperature of the hot surface of a copper plate and the width of the clearance of a blank shell-crystallizer interface are determined. If the temperature of the surface of the blank shell is higher than the solidification temperature of casting powder, the heat resistor of the blank shell-crystallizer interface is formed by connecting a melt cinder layer, a solidification slug layer and a crystallizer-solidification slug interface heat resistor in series. If the temperature of the surface of the blank shell is smaller than or equal to the solidification temperature of the casting powder, the heat resistor of the blank shell-crystallizer interface is formed by connecting an air gap layer, a solidification slug layer and a crystallizer-solidification slug interface heat resistor in series. The method has good universality, and is suitable for determining the heat flux density of all existing continuous casting machine types and sectional crystallizers.

The invention provides a laser processing system in which a heat density accumulated in a base material is computed based on nesting data in order to create an NC program for preventing processing defects. Upon cutting out works W1 through W9 from a base material B1, a nesting area N1 is defined as a sum of the lengths of lines S1 through S4, which is defined as NG1. A laser processing length dimension of the works W1 through W9 is computed by adding the line lengths L1 through L4 and the circumferential length C1 of a round hole and multiplying the result by nine, which is defined as LG1. The heat density HF1 is computed as HF1=LG1 / NG1, and the heat density is compared with a parameter set in advance in order to determine a processing order for preventing processing defects by heat and to create a corresponding program.

The invention provides a pump-driven two-phase circuit device for heat dissipation of a high heat flux electronic device. Heat is collected and transported by using an endothermic process in evaporation and an exothermic process in condensation during a circulation flow process of a working medium. An evaporator for the circuit device comprises micro-channels and fins. In an area of high heat flux, the micro-channels are used to dissipate heat and increase a heat transfer coefficient of a partial area, while in an area of low heat flux, the fins are used. Due to great area difference between the micro-channel area and the fin area in the evaporator, when the working medium in the micro-channels enters the fin area, volume quickly expands and temperature of the working medium reduces, so as to help heat dissipation of the device in the fin area. By using different structures and with little resources, heat dissipation problems of devices with different powers are solved. The pump-driven two-phase circuit device for heat dissipation of the high heat flux electronic device can adapt to heat dissipation of electronic devices with different heat flux densities and can satisfy working requirements of electronic devices with a heat flux density of 50 W / cm<2> or above.

The invention discloses a temperature field calculation method of a reactor based on multi-physical field coupling. Firstly, a three-dimensional simulation model of the reactor is established. Subsequently, based on the electromagnetic theory of field-circuit coupling, the current of each layer of reactor is calculated by the finite element method, and the winding loss of each layer is calculated,then the thermal density per unit volume of reactor is calculated. Finally, based on fluid-temperature coupling, the finite volume method is used to solve the temperature distribution of the reactorwith the unit volume heat density of the reactor as the heat source parameter. The temperature field distribution of the reactor calculated by the invention provides a theoretical basis for structuralperformance optimization of the reactor and online monitoring of the temperature.

A method for incineration and an incinerator for composition of exhaust gases containing organic substances, the incinerator comprising an elongated, preferably cylindrical combustion chamber, an oil or gas fired burner with a flame-tube axially centrally at one end of the combustion chamber, a flue gas outlet pipe provided at the end of the combustion chamber opposite to the burner for the flue gases produced during incineration, and an inlet conduit connected to the side of the combustion chamber for the exhaust gases to be decomposed, wherein the inlet feed pipe opens or discharges in the combustion chamber in proximity to the burner. The incinerator is characterized by a conduction / deflection plate (36), adjacent the input conduit (24), for pre-heating the exhaust gases flowing by. The inner surface (38) of the conduction / deflection plate (36) serves as conduction surface for the flame emitted axially from the burner (18) into the combustion chamber (14), while the outer surface (40) serves as conduction and deflection surface for the exhaust gas entering into the combustion chamber (14) via input conduit (24) with radial flow component. The incinerator thus achieves a higher heat density and a more compact construction of the combustion chamber (14).

The invention relates to an ultrahigh heat density cooling system, which comprises air conditioning equipment, wherein the air conditioning equipment comprises two layers of cooling cycles; a refrigerating host machine and a cooling terminal are arranged separately; and the cooling terminal and cooled equipment form a totally-enclosed air circulating system. The refrigerating host machine and cooling terminal equipment are arranged separately, and the cooling terminal and cooled equipment form the totally-enclosed air circulating system, so that the air supply distance is shorter when the cooling terminal is closer to the cooled equipment, and heat and mass transfer with the outside does not exist. By adopting the ultrahigh heat density cooling system, cooling effect is remarkably enhanced, the system runs without being interfered by external factors and a machine room environment is not influenced; furthermore, the cooling terminal is separated from the refrigerating host machine, sothat vibration produced by a compressor is avoided, and noise is greatly lowered.

The invention relates to the technical field of heating thin films and discloses a heating flexible transparent thin film printed with silver paste and carbon paste and a production method thereof. The thermostatic heating flexible transparent thin film comprises a TIE (titanium ethylene) transparent plastic thin film, the conductive silver paste and the carbon paste, the TIE transparent plastic thin film is provided with a conductive heating thin film layer line which is printed with the conductive silver paste and the carbon paste, and the conductive heating thin film layer line is zigzag. The heating flexible transparent thin film printed with the silver paste and the carbon paste is applicable to high-technology applications in the agricultural and the medical fields. The line design of the conductive heating thin film layer is even; after the conductive heating thin film layer is powered for heating, the heat density is large, and the heat is even; the base material thin film is transparent, flexible and foldable; and the thickness can be from 0.02 to 0.05. The printed conductive heating thin film layer cannot drop even being soaked for 24 hours and cannot be eroded in an alkaline soap solution; and no broken line exists after carrying out a plurality of rub tests are carried out, so that the heating flexible transparent thin film printed with the silver paste and the carbon paste has the advantages of low pressure, low temperature, low manufacture cost, usage safety and convenience and , reliable quality and the like.

The invention discloses a simulation apparatus and a simulation method for heat flux density of the lower head of a pressure vessel. The simulation apparatus comprises an arc simulator which is a cuboid as a whole; the arc simulator bends towards one of the side surfaces of the arc simulator to form a quarter circular ring with a rectangular cross section, the external diameter of the arc simulator is R, the internal diameter of the arc simulator is R-B, B is the thickness of the arc simulator, and the width of the arc simulator is Am. The simulation apparatus provided by the invention can simulate heat power of core melts under different accident conditions and cooling flow of the lower head at the same time; the apparatus can also simulate heating of the core melts under severe accident conditions; the apparatus cooperates with other structures to form a cooling channel together; and the apparatus is applicable to experiments on flow and heat transfer characteristics and critical heat flux density of the external surface of the lower head of the pressure vessel under severe accident conditions in a laboratory, can acquire the limit value of the critical heat flux density of the external surface of the lower head and provides a basis for designing and validity evaluation of a severe accident mitigation system.

A method for producing biomass solid shaping fuel by a catalytic mild carbonization method relates to methods for producing the biomass solid shaping fuel, solving the problems of complex operation, high production cost and difficult shaping equipment maintenance existing in the current method for producing the biomass solid shaping fuel by a physical method. The method comprises the following steps: 1. grinding straws into straw powder and then mixing the straw powder with a catalyst for reaction to obtain straw carbon powder; 2. mixing the straw carbon powder, accessories, cow dungs with water content of 0.5-50% and biogas residues with water content of 0.5-50% and placing the mixture in a shaping unit to obtain shaping fuel; 3. carrying out sun drying on the shaping fuel, thus obtaining the biomass solid shaping fuel. The method of the invention effectively improves the solid shaping performance and heat density of the straws, can realize continuous production and has simple operation and low production cost. The shaping equipment is easily maintained.

The invention relates to the field of energy storage devices, and provides a heat storage / cold storage device. The heat storage / cold storage device comprises a shell, at least three layers of solid-phase medium are filled in the shell; the solid-phase medium of a middle layer has one or more of the following properties; the density of the solid-phase medium in the middle layer is larger than thatof other layers of solid-phase medium, the porosity of the solid-phase medium in the middle layer is smaller than that of other layers of solid-phase medium, and the specific heat capacity of the solid-phase medium in the middle layer is larger than that of other layers of solid-phase medium. According to the heat storage / cold storage device, the shell is filled with the solid-phase medium, duringuse, the flowing heat exchange fluid exchanges heat with the solid-phase medium, so that storage and release of heat energy or cold energy are realized; and the solid-phase medium with low density orhigh porosity or low specific heat capacity are arranged on the two sides of the middle layer, so that under the condition that the heat flux density is not changed, the mass of the solid-phase medium is reduced, the temperature gradient is increased, the expansion of an internal inclined temperature layer is inhibited, and the energy storage efficiency is improved.

The invention provides a method for realizing carbon dioxide cycle power generation based on waste heat from a cement plant. According to the method, CO2 captured during emission reduction is used as a working medium and is cooled and compressed into liquid CO2, the low-pressure liquid CO2 fluid is conveyed into different CO2 energy storage devices through high-pressure pumping devices with the extremely-low energy consumption, various waste heat generated in the cement production process is used as the energy for energy storage of the low-pressure liquid CO2 fluid, and high-pressure thermal supercritical CO2 fluid with the fluctuations and / or different temperatures and different heat densities is generated and is tempered and changed into isothermal-isobaric supercritical CO2 fluid through a steady flow regulator to be stably supplied to a turbine / piston expander so that the turbine / piston expander can do work to drive an electric generator to generate electricity; and carbon dioxide cycle power generation is realized, efficient heat recycling can be achieved, the high heat efficiency is achieved, surplus energy is stored and used effectively, and flexible adjustment and utilization of the energy are achieved.

A fuel cell internal humidity-heat flux density-current density distribution measurement insert is a fuel cell internal humidity-heat flux density-current density distribution measurement device, a leakage seam and a rib which are corresponding to a fuel cell flow field plate flow passage and ridge are arranged on a conductive substrate, and a humidity-heat flux density-current density combined measurement sensor is arranged on the rib; the humidity-heat flux density-current density combined measurement sensor is prepared by vacuum evaporation coating method, and comprises ten layers of thin films. A leading wire is also prepared by the vacuum evaporation coating method, is used to transmit electrical signals, and extends to the flow field plate edge to form a lead foot by magnifying to facilitate connecting with external connection data acquisition equipment. The fuel cell internal humidity-heat flux density-current density distribution measurement insert realizes the synchronous online measurement of fuel cell internal humidity distribution, heat flux density distribution and current density distribution without special transformation of a fuel cell structure, and is suitable for a fuel cell flow field plate with a parallel flow passage, a serpentine flow passage, an interleaved flow passage or a flow passage with other shape.

The invention discloses a heating rod used for a critical heat flux density test. The heating rod comprises a nickel rod, a heating tube, a nickel tube, a copper tube, a ceramic member, copper sheets and thermocouples. The heating tube, the nickel tube and the copper tube are fixedly connected in a butting and sealing way in turn so as to form a rod body with a hollow structure. The nickel rod is connected with external upper live equipment. The copper tube is connected with external lower live equipment. The ceramic member is attached to the internal wall of the rod body and surrounds so as to form a heat cavity. The copper sheets are evenly and transversely arranged in the heat cavity and positioned in the heating tube. The thermocouples are arranged in the heat cavity in a suspension way and fixed by the copper sheets. The heating rod used for the critical heat flux density test is high in heating temperature, high in heat flux density and compact in structure so that the requirements of the critical heat flux density test can be met. Besides, temperature parameters are measured and outputted via the thermocouples in real time so that simulation of nuclear fuel heat release can be accurately realized and the requirements of the critical heat flux density test can be effectively met, critical heat flux density of a nuclear fuel rod under different operation conditions can also be measured, and thus the heating rod used for the critical heat flux density test has a great supporting effect for research and development of new type of nuclear fuel assemblies.

The invention discloses a device and a method for the in-situ observation of the heat flow density of mould powder for continuous casting in a phase change process. The device comprises: a sample chamber for containing sample; a loading system for applying load to the sample from the top; a heating system for heating the sample in the sample chamber; a temperature measuring and recording assemblycomprising at least three thermocouples arranged inside the bottom wall of the sample chamber at intervals from top to bottom; a temperature data collecting system connected to the thermocouples; andan infrared thermometer for real-time temperature measurement of the sample in the sample room. A cooling loop is arranged at the bottom of the sample chamber, and the cooling loop is internally provided with cooling medium. The total thermal resistance Rtot of the tested sample, the loading system-sample interface thermal resistance Rp-s, the sample-sample chamber bottom surface interface thermalresistance Rs-w, the radiant heat transferring heat flow density at various locations and different times of the tested sample qr, and the conduction and heat transferring heat flow density qc are obtained by the computer calculating the data collected by the infrared thermometer and the temperature data collecting system.

A circuit information acquisition and conversion device, a method, and a program therefor for acquiring a layer configuration, wire traces and shapes of via holes from circuit board design information; optimizing, before conversion into an analysis model, the output target range of the via holes on the basis of a package area, heat density distribution, and power consumption; and creating an analysis model that is suitable for a purpose of the analysis are provided.

The invention discloses a movable phase change heat storage and cold storage device. The movable phase change heat storage and cold storage device comprises heat transfer plates, a support, casing pipes, main pipes, a storage tank, a phase change working medium and the like. The heat transfer plates are the main elements for heat exchange. Heat is stored and released through the phase change working medium, the main pipes and the casing pipes and is supplied to the heat storage and cold storage device and an external connector. In the heat storage process, steam passes through the heat transfer plates through the main pipes, heat is transmitted to the phase change working medium through the heat transfer plates, the phase change working medium can absorb heat, be liquefied and stores heat,the working medium is transported to the designated position in a box body, cold water passes through the heat transfer plates through the casing pipes, the heat is transmitted to the cold water fromthe phase change working medium through the heat transfer plate, hot water is obtained, the phase change working medium discharges heat, is solidified and releases heat, and the cold storage processis similar to the heat storage process. In addition, by means of the designed movable phase change heat storage and cold storage device, the heat capacity or the cold capacity can be stably output with an expected temperature, characteristics that the heat storage density of a phase change material is high, and the phase change process is approximately isothermal are utilized, and therefore the heat storage and cold storage device can have higher heat storage and cold storage efficiency and a wider application prospect.

The invention is a computer chip cooling device that reduces the temperature by solute dissolution, which comprises: a liquid storage tank holding the solute solution, many radiating ribs installed on the radiating surface of the liquid storage tank and a cooling fan installed above the radiating surface; a condenser can also be installed between the radiating surface and the radiating fan, and radiating ribs are installed on the external surface of a condenser casing; a cold end of the condenser casing is connected with the inlet of a micro pump, and the outlet of the micro pump is connected with the liquid storage tank; a hot end of the condenser casing is connected with the liquid storage tank; an elastic valve is hung on the top in the liquid storage tank; its manufacture technique is simple and it has the advantages of wide controllable temperature range, high radiating speed, operating simplicity, structure simplicity, low cost, etc; and it can meet the requirement of computer application with the daily increase of heating density.

The invention relates to a cooling device utilizing a micronized boiling efficient heat exchange technology. The cooling device mainly comprises a water inlet chamber, a flow equalizing pore plate, a flow dividing structure, a bottom plate, a ribbed heat exchange plate and a water outlet chamber, bubble micronized boiling is a special boiling phenomenon which occurs on a small-size heating surface and has a heat exchange ability which is far higher than that of single-phase heat exchange and conventional boiling heat exchange, wherein the heat flow density can each up to 1MW / M<2>. According to the invention, a heat exchange channel with multiple inlets and multiple outlets is formed through combining the flow dividing structure and the ribbed heat exchange plate so as to realize occurrence of bubble micronized boiling on a large-scale heating surface. Pressure fluctuation introduced by bubble breakage in bubble micronized boiling is reduced by using fine needles welded on the flow dividing structure. The cooling device has an extremely high cooling ability and relatively simple in structure, and can solve a cooling problem, which is difficult to be processed by conventional cooling devices, of devices and equipment with a high operating heat load.

The invention discloses a measuring method for the heat flux density of a solid metal. The method comprises the following steps: (A) determining a heat conductivity coefficient 1 (W / m. DEG C) of a to-be-measured object; (B) processing measuring holes; (C) respectively installing temperature measuring devices in the measuring holes; (D) respectively measuring temperatures at a point A and a point B by using the temperature measuring devices respectively located at the point A and the point B so as to obtain the temperature TA of the point A and the temperature TB of the point B; and (E) calculating heat flux density of the to-be-measured object in the direction from point A and point B according to a formula. According to the invention, existence of the measuring holes poses little influence on a to-be-measured solid, heat flux density between measured points in a metal solid can be accurately measured in real time, and a measuring apparatus used in the invention has the advantages of a simple structure, easily realizable manufacturing process, a wide measurement range of heat flux density, capacity of realizing high precision measurement of heat flux density in a range of 1 kW / m<2> to 10 MW / m<2> , high stability, good anti-interference capability, etc.

The invention discloses a free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus, which includes: a measurement apparatus and a protective sleeve which are connected to each other. The measurement apparatus is used for measuring enthalpy value of flue gas flow and the protective sleeve is used for protecting the measurement apparatus. The measurement apparatus can work in a severe heat environment with incoming flow total temperature being higher than 3000 K and heat flow density being higher than 20 MW / m<2> for long time.

The invention discloses a color-temperature-adjustable LED spot lamp. The color-temperature-adjustable LED spot lamp comprises a base. A lens and a light source device are arranged on the base. The light source device comprises a substrate and lamp beads. The lamp beads are welded on the substrate in the form of concentric lamp bead rings and include the high-color-temperature lamp bead rings and the low-color-temperature lamp bead rings, and the high-color-temperature lamp bead rings and the low-color-temperature lamp bead rings are sequentially and alternately arranged from inside to outside. The lens comprises a lens body, annular bosses are arranged in the positions, corresponding to the lamp bead rings, of the upper surface of the lens body, and annular light mixing grains are arranged in the positions, corresponding to the annular bosses, of the lower surface of the lens body. The color-temperature-adjustable LED spot lamp is a film and television LED spot lamp product and is formed by arraying the single LED lamp beads of several specifications on the substrate according to a certain rule; and compared with an LED spot lamp with an LED COB as a light source, power density and heat density are lowered, and the light source cost and heat dissipation cost of the product are reduced; and the corresponding lens is designed and corresponds to the hundreds of LED lamp beads, so that the color mixing effect is improved to the maximum extent, and the consistent color mixing effect on the aspects of the illuminance and color temperature of light spots is guaranteed.

The invention discloses a dish recommendation method based on fitness data, which comprises the following steps: collecting fitness data of a user in a fitness place; determining an exercise intensityof a user at the fitness venue according to the fitness data; determining a target heat density corresponding to the motion intensity in the mapping relation matrix based on a mapping relation matrixof the motion intensity and the heat density of the user in at least one physiological characteristic dimension; obtaining the dishes information of the restaurant in the geographical area where thetarget dining location is located; at least one restaurant within that geographical area is screen for dishes match the target calorie density according to the dishes information. The dish recommendation method based on the fitness data is more timely and accurate to supplement the heat consumed by the user in the fitness exercise, promotes the online integration of the sports fitness industry andthe catering industry, and also improves the consumption experience and the viscosity of the user.

The invention discloses a wedged step-distributed type porous lithium battery module and relates to the technical field of lithium batteries. The module is characterized by at least comprising a plurality of single batteries and a porous bracket, wherein the outer wall of each single battery is wrapped by an insulating membrane; the outer wall of the insulating membrane is coated by a circle of anadhesive; the adhesive is positioned in the center of the side wall of the single battery; the porous bracket is used for fixing the single batteries; a plurality of circular mounting holes in wedgedstep distribution are formed in the porous bracket; a groove is formed in the circumferential direction in the center of the inner wall of each mounting hole; a fastening screw and a positioning pinare arranged on the side wall of the porous bracket; the single batteries are inserted into the mounting holes; the adhesives are positioned in the positions of the grooves; the single batteries are adhered to the porous bracket through the adhesives. By adopting the technical scheme, the single batteries can be distributed in a limited space as many as possible, the heat density of the module inoperation can be reduced, and the mechanical properties of the module connected with a whole battery group can be improved.