503 results about "Thermal balance" patented technology

It is arranged so that ions can be analyzed accurately and with high sensitivity. A first electrode 11 is provided on the outer periphery of a dielectric cylindrical body 13 and a second electrode 12 is placed inside the cylindrical body 13 leaving a clearance between itself and the inner surface of the cylindrical body 13. When an AC high voltage is impressed across the first electrode 11 and second electrode 12, a barrier discharge occurs within the cylindrical body 13. When a distal end portion 12a of the second electrode 12 projects outwardly from the distal end of the cylindrical body 13, a thermal equilibrium plasma P having a low electron temperature is generated outwardly of the distal end of the cylindrical body 13 without a plasma jet ascribable to the barrier discharge emerging outwardly from the distal end of the cylindrical body 13. By exposing a sample S to the thermal equilibrium plasma P, particles (atoms, molecules) desorbed from the sample S undergo soft ionization without being decomposed or polymerized. The ions generated are introduced to a mass analyzer 50.

A method for controlling thermal flows in at least one building, according to which a mechanism for influencing the temperature within the building is controlled based on a plurality of input parameters. Controlling can be done in the most economical manner by triggering the mechanism that regulates the temperature of a specific monitored space or the at least one area of a specific space by using a) at least one target value, especially the desired temperature of the specific space, b) at least one general parameter characteristic of at least one variable inside and / or outside the building, which at least indirectly influences the temperature within the specific space, and c) at least one special parameter characteristic of the specific thermal flow conditions of the specific monitored space or the area of the specific space, as input parameters, and calculating the controlling of the mechanism from the input parameters in a control unit.

The invention belongs to the technical field of building cooling load control, relates to a method for predicting an office building cooling load, and through building an office building outdoor cooling load model, an office building indoor cooling load model and an office building fresh air load hourly variation model, an office building cooling load model is obtained. Based on the an energy conservation law and a thermal balance relation in building environment, from the point of view of variation of the number of people in an office building and personnel energy utilization modes, the interference amount of a cooling load in the office building is predicted and analyzed; and meteorological website data are utilized to predict a cooling load outside the office building and an office building fresh air load. The method for predicting the office building cooling load establishes an air conditioner enclosing structure, a solar radiation cooling load hourly variation model, and hourly variation models of personnel, equipment, illumination cooling loads and personnel indoor rate in air conditioning environment, and finally obtains a cooling load prediction model of the office building.

A compressed air stream is cooled to a temperature suitable for its rectification within a lower pressure heat exchanger and a boosted pressure air stream is liquefied or converted to a dense phase fluid within a higher pressure heat exchanger in order to vaporize pumped liquid products. Thermal balancing within the plant is effectuated with the use of waste nitrogen streams that are introduced into the higher and lower pressure heat exchangers. The heat exchangers are configured such that the flow area for the subsidiary waste nitrogen stream within the higher pressure heat exchanger is less than that would otherwise be required so that the subsidiary waste nitrogen streams were subjected to equal pressure drops in the higher and lower pressure heat exchangers. This allows the higher pressure heat exchanger be fabricated with a reduced height and therefore a decrease in fabrication costs.

The invention discloses a method for detecting the junction temperature of a chip of an LED lamp, which comprises steps of: 1. under the electric current of extremely short pulse as the same as that that of the normal work of the lamp, obtaining the relationship between the positive voltage of the two ends of the lamp and the change of the junction temperature of the chip by controlling the temperature of ambient environment; 2. under the DC normal work of the lamp, obtaining the positive voltage of the two ends of the lamp when achieving the stability of the thermal balance; and 3. substituting the positive voltage data into the relationship obtained in step 1 between the positive voltage of the lamp and the junction temperature of the chip to ensure the work junction temperature of the chip of the lamp under normal working condition. The method can exactly judge the work junction temperature of the chip of the LED lamp under different working currents, and is good for the heat dispersion of the LED lamp, the evaluation of the service life and the optimization design of the lamp.

The invention provides a method for accurately calibrating temperature error coefficients of a laser gyro inertia measurement unit. In the method, a three-axle table with a thermostate is utilized to enable an LIMU to achieve whole thermal balance through a measure of performing long-term heat preservation at a certain temperature spot; system inherent error coefficients such as a gyro scale factor, a gyro literal drift, an accelerometer scale factor, an accelerometer literal bias and the like at the temperature spot are accurately calibrated through a calibration method of combining dynamic rotation and static 24 position; and then high and low temperature cycling tests are performed on the LIMU by utilizing the inherent error coefficients of the LIMU at the temperature spot, so that the temperature error coefficients comprising 30 temperature related coefficients such as a primary temperature coefficient, a secondary temperature coefficient, a temperature gradient coefficient and a temperature change rate coefficient of the gyro literal drift and accelerometer literal bias are further calibrated. The method provided by the invention has the characteristics of high accuracy and simplicity in operation, and can be used for greatly improving the use accuracy of the LIMU under a variable temperature environment.

A multiphase power supply device and a current adjusting method thereof are provided in the application. The multiphase power supply device outputs power sources and currents with different phases to a microprocessor, and a detection module detects present temperature values of each phase power source to adjust currents of each phase power source to achieve thermal balance. The multiphase power supply device further can automatically measure the power efficiency and display results including the detected temperature values of each phase power source and the power efficiency on a screen, and thus the user can know the operation efficiency of the power supply device conveniently.

The invention discloses extra-huge-volume concrete once continuous pouring multi-cycle real-time temperature control construction technology. Flow and flow rate of circulating water is automatically regulated by a concrete internal and external temperature real-time monitoring system. Hydration heat inside concrete is gradually reduced to balance the inside and outside temperature difference of the concrete, effectively prevent temperature difference stress inside and outside the concrete from generating a crack, and ensure that construction quality of "extra-huge-volume concrete" meets design and specification requirements. The extra-huge-volume concrete one-time continuous pouring multi-cycle real-time temperature control construction technology has the advantages of saving a lot of water resources, achieving green construction, and conforming to national energy saving and environmental protection policy orientation due to the fact that three communicated circulating water systems including water in a circulating pipe network, water in an entire storage thermal insulation maintenance pool of a base plate and recharge water come from a foundation pit rainfall and site rainwater collection system.

A method and apparatus for controlling a temperature-regulated zone utilizing a thermal balance temperature control system. The thermal balance control system is a dynamic real time control system that measures the sensible thermal load in the zone, and directly regulates the BTU output of the HVAC package to balance such output with the measured sensible thermal load.

Generating a heat transfer model for building energy may comprise developing a PDE model that describes heat transfer through building envelope of a building, and developing an ODE model that describes the heat transfer and thermal balance in a space inside the building. Stepwise parameter estimation integrates the PDE model and the ODE model in generating the heat transfer model.

The invention discloses a thermal management system of a BEV (battery electric vehicle) and an air conditioning system. The thermal management system comprises a battery pack thermostat and a water heater, wherein an inlet of the water heater is connected with an outlet of a dynamic cooling system through a first water pump, an outlet of the water heater is connected with an inlet of a heating core of the air conditioning system of the vehicle, an outlet of the heating core is connected with a first inlet of a first water tank, and an outlet of the first water tank is connected with an inlet of the dynamic cooling system; the outlet of the heating core is connected with a first inlet of the battery pack thermostat through a third solenoid valve, the heating core is used for providing a heat source for the battery pack thermostat, a first outlet of the battery pack thermostat is connected with a second inlet of the first water tank, and the first inlet of the battery pack thermostat is communicated with the first outlet. The thermal management system not only can realize the heating requirement of an air conditioner of a new energy vehicle, but also can use a small amount of electric energy, recover waste heat of a motor for reheating and realize thermal balance between a heating system and a cooling system of a battery system.

A passive thermal control system maintains the operating temperature range of protected equipment within desired limits by controlling the conductive attributes of thermal interfaces and physical relationships within the system so as to achieve a desired thermal balance. In one embodiment, an integrated cell unit (100) includes a solar array (102), a Lithium ion cell (108) and an antenna assembly (114) such as a phased array antenna. In operation, a thermal gradient (116) is defined between the array (102) and the assembly (114) as the assembly (114) radiates heat from the array (102) into space. The operating temperature range of the cell (108) is controlled by appropriate design of the thermal interfaces between the cell (108) and the assembly (114) and / or interfaces within the assembly (114), such as a thermal interface associated with dielectric spacers provided between emitter pairs of the assembly (114).

The invention relates to LED heat resistance measuring technologies, in particular to a high-power LED heat resistance measuring device and a method of measuring high-power LED heat resistance thereby, and aims to solve the problem that the existing high-power LED heat resistance measuring device is low in measuring precision. LED junction temperature is controlled by controlling surface temperature of a measuring base; according to the semiconductor physical feature that LED junction temperature and heat resistance are of certain linearity, the LED junction temperature and the heat resistance are measured by measuring LED junction voltage drop. A standard power source provides an LED with standard current; a temperature control device uses PID regulating technology, and the temperature of the measuring base is balanced fast; through the adoption of contact measurement, the base and LED thermal balance period is shortened greatly; when the temperature is balanced, spot measurement of LED junction voltage drop is performed fast with low current; through the measurement of junction voltage drops of multiple temperature spots, LED voltage temperature coefficient is calculated. The high-power LED heat resistance measuring device and the method have the advantages that measuring speed is high, operation is simple, measurement precision is higher than + / -1%, and the device and the method are applicable to high-power LED heat resistance measurements.

A district energy sharing system (DESS) comprises a thermal energy circuit which circulates and stores thermal energy in water, at least one client building thermally coupled to the circuit and which removes some thermal energy from the circuit ("thermal sink") and / or deposits some thermal energy into the circuit ("thermal source"), and at least one thermal server plant that can be thermally coupled to external thermal sources and / or sinks (e.g. a geothermal ground source) and whose function is to maintain thermal balance within the DESS.

The invention discloses an aluminum cell lining struction, provided with cathode block, cell shell, which is characterized in masoning impervious brick skin, insulating brick skin and firebrick skin from upper to lower besides the floors of the cathode block and the cell shell separately, a latus breaker locating in the coupling part of the side face of these brick skins and the cell shell, masoning a breaker and a latus impervious brick between the cathode block and the inner side of the cell shell, and a side mass of silicon nitride associated with charring silicon around the upper part inside the cell shell, besides the side mass and cathode block covered with charcoal paste layer. The invention is of higher groove depth, which is available to self-extinguishing effect of cells, and of extend radiating area; a plurality of breakers for absorbing expansive power arisen from carbon blocks; good thermal balance in the industrial process of the cell, which can be prolonged cell life to 2000 days from 1500 days.

The invention discloses a subsonic velocity combustion ramjet combustion chamber and a regenerative cooling method of the subsonic velocity combustion ramjet combustion chamber. The subsonic velocity combustion ramjet combustion chamber comprises an air inlet segment, a combustion segment and a spray pipe segment. A regenerative cooling structure is arranged inside an outer shell of the combustion segment and the spray pipe segment. The regenerative cooling structure comprises multiple cooling channels. Hydrocarbon fuel cools the combustion chamber through the cooling channels first, and then enters the combustion chamber for combustion. By means of the regenerative cooling method and the cooling structure, the temperature of an engine body can be lowered greatly to be below the allowable temperature of an engine manufacturing material, thermal balance of a whole system can be realized quickly, and therefore the effect of long-time effective thermal protection of the subsonic velocity combustion ramjet combustion chamber is achieved; moreover, the fuel after absorbing heat is higher in combustion efficiency and sufficient in combustion, and therefore the thrust and endurance of a subsonic velocity combustion ramjet can be effectively increased.

The invention discloses a battery pack. The battery pack comprises a plurality of cells and a temperature regulating module, wherein the temperature regulating module comprises a first flow channel, a second flow channel, and a third flow channel communicated with each other; and the third flow channel is vertically arranged between adjacent cells. The battery pack provided by the invention has the advantages of low energy consumption, good internal thermal balance, uniform overall heat dissipation, simple structure, and the like, and can be widely used in the related fields of electric vehicles, energy storage power stations and the like.

The invention discloses a temperature control circuit and method and a charging system. The temperature control circuit comprises a judging unit, a calculating unit and a setting unit, wherein the judging unit is used for receiving the temperature value from a sensor and respectively comparing the temperature value with a thermal balance threshold value temperature, a maximum using temperature and a recovering temperature to obtain a corresponding judging result; the calculating unit is coupled with the calculating unit and is used for calculating the output power according to the judging result in real time; the setting unit is coupled with the calculating unit and is used for producing a voltage setting value corresponding to the output power and a current setting value corresponding to the output power and supplying the voltage setting value and the current setting value to a power module. According to the temperature control circuit and method and the charging system, the output power of the charging system can be adjusted flexibly, and therefore the charging efficiency is improved, and overheating of the charging system is avoided.

The invention discloses a method for acquiring the thermal performance of an oxygen-enriched combustion boiler. The method comprises the steps of combustion calculation of fuel, simulation of flue gas and air supply, thermal balance calculation, hearth thermal calculation and convection heating surface thermal calculation, wherein the hearth thermal calculation consists of a flame blackness calculation step and a hearth blackness calculation step, the convection heating surface thermal calculation consists of a flue gas blackness calculation step and a flue gas side radiation heating coefficient determination step. A triatomic gas radiation attenuation coefficient ky is calculated according to a formula specified in the specifications, wherein PH2O is the H2O partial pressure in flue gas, S is the effective thickness of a radiating layer, and epsilon is a triatomic gas emission rate. By adopting the method for acquiring the thermal performance of the oxygen-enriched combustion boiler, the thermal performance of the oxygen-enriched combustion boiler is acquired more accurately, and the accuracy can meet the requirements on design as well as check of the thermal performance of the oxygen-enriched combustion boiler.

The invention provides a hydrogen gas sensor based on a thermal conduction principle. The sensor comprises the thermistor of a measuring cell, the thermistor of a reference cell, a bridge fixed resistor, a PCB board, a shell and an amplifying circuit, the top of the measuring cell is provided with a porous membrane or a reticular supporter, the reference cell is of a leak-proof structure, and hydrogen gas cannot infiltrate into the reference cell. The thermistor and the bridge resistor are respectively fixed on the upper and lower sides of the PCB board. The amplifying circuit is arranged at the bottom or outside the shell of the sensor. By optimizing the physical structure of the sensor, the invention realizes the self thermal balance of the sensor, inhibits the interference of an external environment, has small and compact structure, and is applicable to general on-site environment for a long time.

The invention provides a technical scheme of a thermal balance-based furnace temperature optimization method of a walking beam furnace. According to the scheme, the method is characterized in that on the premise that the requirements of steel blank rolling are met, set values of temperatures of different sections of the furnace are reduced to the greatest extent, then the fuel consumption is reduced, and the oxidation burning loss of steel blanks is reduced. According to the method, the heat balance relationship inside the furnace is utilized to establish relationship expression of the furnace temperature, the steel temperature, the heat supply amount and the heat loss, and optimal furnace temperatures of different sections along the length direction of the furnace are calculated according to the working conditions such as the furnace model, the steel blank specification, the types, the target discharge temperature, the feeding temperature and the rolling efficiency, so that the steel blanks are heated to be appropriate temperature and allowable cross section temperature difference within the fixed time, and the minimum energy is consumed.

The invention discloses a method for estimating generated heat of a lithium ion battery under conditions of charge and discharge, and the method comprises the steps: firstly collecting temperature data of a to-be-detected lithium ion battery under the conditions of electric heating and charge and discharge; secondly inputting the temperature data of the battery under different electric heating power into data processing software, and determining the relation equation between the heat loss power and temperature of a lithium ion battery thermal runaway testing and analysis system through employing a thermal balance integro-differential equation (1) and a thermal balance integro-differential equation (2); thirdly inputting the temperature data of the battery under the conditions of charge and discharge into the data processing software, inputting heat, generated within a certain time period, of the lithium ion battery into the data processing software according to the heat of the lithium ion battery, which is obtained by a thermal balance integro-differential equation (3) and is generated within a certain time period, in a process of charge or discharge, and obtaining a relation curve between the charge / discharge heating rate and time and the total generated heat in the process of charge or discharge. The method takes the whole lithium ion battery as a research object, and can obtain the impact on the battery from the charge and discharge conditions.

The present invention provides a battery module and a liquid-cooled battery system that uses it, a battery cell and a current collector sheet, on the premise that the materials like the electrode and separator and so on are completely the same, energy density of the battery pack is greatly increased; the cell and the current collector sheet are fully welded connections, the joints are fewer and it is not prone to produce desoldering, also ensuring the stability of the of the cell tab and high current carrying capacity, and when putting the parallel battery module in series, the use of wires are avoided, thus reduces the volume of the battery pack; the innovative design for the liquid-cooled battery pack system, improves the thermal balance between the cells, and the heat-dissipation in battery pack distributes more evenly, the insulation property of the battery package is highly improved, controlling the heat-dissipation capacity of the system by adjusting the flow rate of the circulating pump, not only the unnecessary energy consumption can be avoided, but also have a better impact resistance.

The invention relates to a non-splashing dynamically heating self-adaptive resistance welding method for automobile metal sheets, which comprises the following implementation steps: firstly, a nugget formation process is enabled to be kept in the state of non-splashing power-on heating fusion and cooling crystallization heat balance in the way that a non-secondary rectification welding transformer and a pulse width adjustable alternate current contravariant power supply are utilized and different metallic materials thermal balance factors are called; the nugget size is controlled through detecting the change rate of dynamic resistances at the two ends of electrodes. According to the invention, as a non-splashing thermal balance factor, namely t+t0, is adopted in the method, the splashing problem in the welding is effectively solved, and the welding quality is improved; the change rate of dynamic resistances at the two ends of the welding electrodes during the welding can be detected to quickly judge the nugget formation process, so that the interference in the measuring is reduced, and the reliability of the detection is improved; besides, the difficult problem that a plenty of splashes are generated in the welding of automobile metal sheets for a long time is effectively solved, the welding quality and the production efficiency are greatly improved, and the production and processing cost is greatly reduced.

The invention discloses a method for testing film thermal conductivity. The method comprises the steps that: (1) with a surface micromachining technology, a double-end support cantilever beam structure is prepared, wherein the double-end support cantilever beam structure is composed of a film to be tested, a metal resistor strip on the film to be tested, and supporting blocks positioned on two ends below the film to be tested; (2) a proper direct current I is applied on the metal resistor strip I, such that temperature increasing is formed on the double-end support cantilever beam through the heating effect of currents; and (3) when thermal balance is reached, stable temperature increasing distribution is formed on the double-end support cantilever beam; and thermal conductivity is calculated according to voltage change value delta U on two poles in the inner side of the metal resistor strip, or according to delta UTCR value. According to the invention, compared with a commonly used 3omega method film thermal performance test method, the test structure processing process and testing means of the one-dimensional cantilever beam direct current method are relatively simple, and assist in providing more precise results.

The invention discloses a testing device for thermal resistance of bedding and clothing. The testing device comprises a constant-temperature room, a dummy model system and a test bed; the dummy model system comprises a dummy model, resistance wires and a copper sheet are arranged on the outer surface of the dummy model, the resistance wires are connected with a heating controller by conducting wires, thermocouples are distributed on the copper sheet and are connected with a multi-channel temperature tester by conducting wires, and the bedding and clothing are placed on the outer surface of the copper sheet; and the constant-temperature room comprises a simple room, an outdoor air conditioning unit, a temperature controller, air supply outlets made of orifice plates, return air inlets made of louvers and an air temperature sensor. The testing device has the advantages that owing to the air supply outlets made of the orifice plates and the return air inlets made of the louvers, upper-supplying and lower-returning airflow is formed, and accordingly a uniform temperature field and a uniform speed field can be formed in the constant-temperature room by the aid of the outdoor air conditioning unit and the control action of the temperature controller; and a value of the thermal resistance of the bedding and clothing can be computed by the aid of a thermal balance principle according to the difference between the temperature of the surface of the dummy model and the temperature of air in the constant-temperature room and heating load required for keeping the temperature of the surface of the dummy model constant.

The present invention relates to a thermal balance data collection battery box having replaceable elementary cells, and belongs to the technical field of battery management. According to the present invention, four air pressure columns formed by mutual adhesion are arranged in the bushing of a battery unit, optical fibers are inserted in the center position of the air pressure columns in a penetrating manner, the gap position on the bottom end of the bushing is provided with a Dembet effect semiconductor wafer, the light spot of the light of led lamp bead is irradiated to the axial position of the semiconductor wafer through light guide fibers, the temperature difference between the battery packs is converted into the position offset of the light spot on the Dembet effect semiconductor wafer by using the air thermal expansion and cold contraction principle, the monomer battery pack and the electrical components thereof are fixed by using the upper end cover having threads and the lower end cover having threads, the monomer battery in the battery pack can be arbitrarily replaced, and the working temperature can be automatically adjusted through the thermal expansion contraction opening and closing window of the battery pack bushing; and with the thermal balance data collection battery box, the temperature in the battery unit and the fine temperature difference between the battery unit can be accurately determined and can be transmitted to the power supply management hardware system so as to provide reliable data for the thermal management and the optimization of the battery.

The invention is suitable for the field of mechanical transmission devices, in particular to the field of transmission devices for large-tonnage mining dump trucks with electric wheels, and provides a hub reductor for a mine electric drive heavy-duty car. The hub reductor is characterized by adopting three stages of planetary reducing mechanisms; the first-stage and the second-stage planetary reducing mechanisms are differential gear trains; the third-stage planetary reducing mechanism is an ordinary gear train; in first-stage transmission and second-stage transmission, sun gears are power input components, and planet carriers and gear rings are power output components; and in third-stage transmission, a sun gear is a power input component, a planet carrier is fixed, and a gear ring is a power output component. The invention has the benefits that the transmission ratio changes within a large range, so as to transmit even larger torque; one more stage of planetary reducing mechanism is adopted for providing driving torque required by driving the heavy duty car, so that the bending fatigue stress and the contact fatigue stress of a last stage gear are reduced, which ensures higher safety factor; and the axial space utilization rate of the whole hub reductor is improved while the radial space is fully used, so that the integral radiating area is enlarged to achieve integral thermal balance better.

The invention relates to a method for measuring plasma electron density by fiber spectrum synergizing discharge current, and belongs to the technical field of discharge plasma diagnosis. The method is technically characterized by comprising the following steps: using a micro fiber spectrum measuring path and a discharge current measuring circuit at the same time to acquire real-time parameters of optical radiation spectrum of discharge plasma and discharge current, comprehensively analyzing the parameters through a computer data processing system, and calculating the electron density of the plasma. The micro fiber spectrum measuring path consists of a fiber probe, a conducting fiber and a micro fiber spectrometer, which are connected in turn; the discharge current measuring circuit consists of a current sensor, a current signal amplifier and a data acquisition device, which are connected in turn; and the computer data processing system calculates the electron density of the discharge plasma by using the acquired data according to the gas molecule motion theory. The method has the advantage that the application range of the discharge plasma electron density diagnosed by optical emission spectrometry is expanded to an imbalance state from a local thermal balance state.

The invention relates to a system for preparing solid, liquid and gas products from coal and biomass and a method for preparing solid, liquid and gas products by using the system. The operation of the system is dependent on the integrated circulation of the heat generated in the system between a pyrolyzing furnace and a gasification furnace and the thermal balance when no any external heat is supplied to the system so that the thermal efficiency of the system is improved greatly; and a thermal radiation synthetic gas cooler (RSC) with high cost is saved from the system, wherein a chilling unit and a chilling medium in the region adjacent to a synthetic gas flow outlet and ejected in the gasification furnace chill the synthetic gas flow so that the synthetic gas from the chilling unit or the gasification furnace is filled in the pyrolyzing furnace, thereby ensuring that the operation temperature of the pyrolyzing furnace is controlled in the desired range of the pyrolytic reaction without needing an external thermal source for the pyrolytic reaction.