156 results about "Heat transfer process" patented technology

The present application provides a dynamics analysis method for an ammonia combustion refrigeration system in large park cooling. The method comprises: on the basis of a geometric structure of an ammonia combustion chamber and a fuel supply amount, calculating the heat generated by ammonia combustion and analyzing the heat transfer mode between the combustion chamber and a desorption tower, the heat transfer mode comprising direct contact type heat transfer and partition type heat transfer, and simulating the heat transfer process to obtain and draw the heat flux distribution of the tower wall surface; on the basis of the flow state and a relationship curve between the pressure drop and the flow velocity, analyzing the desorption process of a refrigerant in a solution, and on the basis of the concentration of the solution, a boiling point of the refrigerant, and the vapor pressure, calculating local desorption rates at different positions in the desorption tower and the refrigerant vapor generation amount; and on the basis of the heat flux distribution, calculating the temperature distribution of the solution, and analyzing the heat transfer and mass transfer processes in the desorption tower to obtain a local heat transfer coefficient and the mass transfer efficiency distribution of the surface of a filler.

The invention discloses a buried pipe temperature response calculation method considering underground water seepage and ground temperature gradient, and belongs to the field of building environment and energy application engineering.The buried pipe temperature response calculation method comprises the steps that a shallow buried pipe heat exchanger is regarded as a finite long-line heat source model, and when underground water seepage passes, the shallow buried pipe heat exchanger is regarded as a finite long-line heat source seepage model; an energy control equation containing a soil heat conduction item, an underground water seepage convection item and a ground temperature gradient correlation item at the same time is established, and initial temperature distribution based on ground temperature gradient, ground surface fixed wall temperature and boundary conditions of an underground limited boundary are set; and finally, obtaining an analytical solution expression of the change of the temperature at any position of the underground soil along with the time through analytical solution. According to the method, the defect that a traditional model ignores key environmental factors is overcome, the heat transfer process of heat conduction and convection coupling can be accurately simulated, the accuracy of temperature field prediction and the reliability of long-term performance evaluation are remarkably improved, meanwhile, the complexity of numerical calculation is avoided, and the calculation efficiency is improved.

The invention discloses a thermal power generating unit coordination control data and mechanism hybrid modeling method and device, computer equipment and a computer readable storage medium, and relates to the technical field of thermal energy engineering and power system modeling and control. Establishing a high-precision dynamic mechanism model of the working medium flow and heat transfer process of the boiler-steam turbine system; then, constructing an error correction model fusing the long-short-term memory network, the convolutional neural network and residual connection; and finally, fusing the mechanism model and the error correction model through parallel computing to form a dynamic hybrid model with physical interpretability and high precision. Through the hybrid modeling strategy, the prediction accuracy of key parameters such as the main steam pressure, the separator outlet steam enthalpy value and the unit load in the wide load range, especially under the dry-state operation working condition is remarkably improved, and a reliable model basis is provided for designing an advanced unit coordination control system.

The invention relates to the technical field of heat exchanger design, and provides a supercritical LNG heat exchanger design method and system.The method comprises the steps that A, a wing-shaped fin spoiler is adopted to be installed in a PCHE channel, an internal spoiler structure matched with the channel is formed, and the heat transfer performance of a supercritical LNG mixed working medium is enhanced; b, by adjusting the heat transfer process of the mixed working medium in the channel, the heat transfer performance and the flow resistance of the mixed working medium in the channel of the PCHE are balanced; c, regulating and controlling operable parameters through a multi-objective numerical optimization technology so as to balance the channel internal heat transfer performance and flow energy consumption of the PCHE; wherein the operable parameters are used for directly regulating and controlling the heat transfer and flow process in the PCHE channel. According to the invention, the average wall temperature can be reduced by 2.24% through the wing-shaped fin structure, and the increase of the pressure drop in the PCHE channel is controllable.

The invention relates to a temperature control method of cooking equipment, on one hand, non-contact, non-intrusive, global and high-resolution perception of a temperature field of a target area in a cavity of the cooking equipment is realized by collecting multi-source temperature data and reconstructing temperature distribution of a reference temperature measurement plane parallel to a heating array; the problem of inaccuracy caused by dependence on finite point temperature measurement or simple coefficient estimation is solved; on the other hand, temperature deviation is calculated by coupling reconstructed temperature distribution and side wall temperature data, power is decided in combination with heat transfer characteristics in the normal direction of the heating array, accurate modeling and dynamic compensation of the heat transfer process in the three-dimensional space are achieved, and therefore the inherent temperature difference between the center and the edge of the cavity can be eliminated in a targeted mode; energy transfer loss caused by thermal resistance can be compensated; finally, through the step of independently controlling each heating unit according to the target power, a highly uniform and stable temperature field can be formed and maintained in the whole cooking process.

The invention discloses an IGBT module junction temperature prediction method and system based on an LSTM thermal neural network, and belongs to the technical field of IGBT application. Comprising the following steps: analyzing the unsteady state heat transfer characteristics of multiple layers of materials in the IGBT module, and constructing a discrete heat transfer (DHT) equation; a training data set containing temperature response data under different power loss conditions is generated through finite element FEM simulation; constructing an LSTM thermal neural network junction temperature prediction model embedded into a physical layer, wherein the physical layer comprises a sub-neural network to extract a mapping relation between input features and thermal resistance and thermal capacity; and training the model by using the training data set, and converting the DHT equation as a physical constraint into a model parameter dynamic constraint condition, thereby realizing prediction of the junction temperature of the IGBT module under different operation conditions. According to the method, the physical heat transfer process and the LSTM network are fused, limitation of an existing method is overcome, accurate and rapid prediction of the junction temperature of the IGBT module is achieved, and reliability and economical efficiency of thermal management of the IGBT module are effectively improved.

The utility model discloses a battery device and an electric device. The battery device comprises a plurality of single batteries, a composite heat insulation pad is arranged between every two adjacent single batteries, each composite heat insulation pad comprises at least one first heat insulation layer and at least one second heat insulation layer, and the first heat insulation layers and the second heat insulation layers are alternately stacked. The first heat insulation layer is a ceramic fiber heat insulation layer or an aerogel heat insulation layer, and the emissivity of the second heat insulation layer is smaller than or equal to 0.3. The first heat insulation layer can play a better role in insulating heat conduction and heat convection; in the heat transfer process, besides heat conduction and heat convection, the form further comprises heat radiation, the higher the temperature is, the larger the radiant heat proportion is, the emissivity of the second heat insulation layer is low, most of the radiant heat can be isolated, the second heat insulation layer and the first heat insulation layer are structurally compounded, the total heat of heat transfer between the battery monomers can be reduced, and the heat transfer efficiency is improved. Therefore, the risk of thermal runaway of the battery device is reduced.

The invention discloses a multi-scale bidirectional coupling sweating cooling simulation method which comprises the following steps: firstly, on a mesoscale, constructing a mesoscopic flow model, simulating flow of a coolant, and obtaining parameters such as porosity, permeability and inertia coefficient of a porous medium; introducing the obtained parameters into a porous medium panel area of a thrust chamber geometric model constructed under a macroscale to realize cross-scale parameter coupling; the flow and heat transfer process in the thrust chamber geometric model after cross-scale parameter coupling is simulated, and the speed, pressure, temperature and local heat flux density distribution of a combustion chamber and a porous medium panel area under the macroscale are obtained; and taking the local heat flow density as a new wall surface boundary condition, capturing the flow and heat transfer characteristics of a coolant in pores under a thermal state working condition based on the mesoscopic flow model, and further evaluating the overall cooling performance and the thermal protection effect of the porous medium panel. Through coupling calculation of the mesoscopic pores and the macroscopic combustion chamber, the accuracy and reliability of prediction of the cooling performance of the porous medium are improved.

The invention relates to the technical field of solid oxide fuel cells, and discloses a construction method of a solid oxide fuel cell multi-physical field bidirectional strong coupling simulation model and a computer program product. The method comprises the following steps: respectively constructing an electrochemical model, a positive / negative electrode fluid flow model and a heat transfer model of the solid oxide fuel cell based on an established geometric structure model; solving equations of the physical fields in all the models are combined to form a full coupling matrix, and iterative solving is carried out according to a set initial value; and judging whether the constructed model is converged or not according to an iterative solution result. According to the model constructed by the method, the mutual influence among electrochemistry, flow and heat transfer processes is fully considered, and synchronous solving is performed through a unified matrix system, so that real-time interaction and collaborative updating among multiple physical fields are realized, and the convergence efficiency and numerical stability of a nonlinear coupling problem are remarkably improved; through inspection, the deviation between a simulation result and actually measured data is less than 8%, and the method has high engineering practical value.

This invention discloses a method and system for predicting IGBT module junction temperature based on an LSTM thermal neural network, belonging to the field of IGBT application technology. It includes: analyzing the unsteady-state heat transfer characteristics of the multilayer materials inside the IGBT module and constructing a Discrete Heat Transfer (DHT) equation; generating a training dataset containing temperature response data under different power loss conditions through finite element (FEM) simulation; constructing an LSTM thermal neural network junction temperature prediction model with an embedded physical layer, the physical layer containing sub-neural networks to extract the mapping relationship between input features and thermal resistance and thermal capacity; training the model using the training dataset, transforming the DHT equation as a physical constraint into dynamic constraints for model parameters, thereby achieving the prediction of IGBT module junction temperature under different operating conditions. This invention overcomes the limitations of existing methods by integrating the physical heat transfer process with the LSTM network, achieving accurate and rapid prediction of IGBT module junction temperature, effectively improving the reliability and economy of IGBT module thermal management.

The invention relates to the technical field of physical engines, in particular to a boiler heat transfer inertia determination and boiler heat transfer inertia regulation and control analysis method and device, and the method comprises the following steps: discretizing a superheater tube wall and a header into Lagrange material points carrying mass, temperature and stress information according to the geometric structure and material physical property parameters of a boiler; according to the method, by analyzing the geometric structure and the material physical property parameters of the boiler, a heated part is dispersed into material points carrying mass, temperature and stress information, and coupling treatment is achieved in a grid covering a fluid domain and a solid domain, so that the heat transfer process can be continuously tracked on the global scale, and the heat transfer efficiency is improved. And by executing mapping between material point information and grid nodes under variable working conditions, distribution changes of momentum and energy can be synchronously obtained, and change results are returned and updated to the material points in real time, so that dynamic interaction of the position, the temperature and the stress is realized, and time sequence evolution of heat transfer inertia is described with higher precision.

The invention discloses an environment-friendly stadium seat and a metal plate heat transfer printing forming process thereof. The environment-friendly stadium seat and the metal plate heat transfer printing forming process are suitable for public stadiums such as report halls and theaters. The seat comprises standing feet, a seat body and a leaning body, the seat body and the leaning body are both designed in a mode that an inner lining plate (a stress component) and an outer decorative plate (a decorative component) are separated, the inner lining plate is of a composite structure of a multi-layer plate and a steel frame and bears main loads, the outer decorative plate is an aluminum alloy plate or a cold-roll steel plate which is 1.5-3 mm thick, and the outer decorative plate is processed through a high-temperature wood grain heat transfer printing technology after being processed through stamping, welding and the like. The seat body is provided with high-density polyurethane shaping sponge and flame-retardant wear-resistant environment-friendly fabric, the backrest body is provided with a turnover mechanism which can be folded and stored, and the outer decorative plate is detachably connected with the inner lining plate. The metal plate heat transfer printing process comprises the steps of material selection, cutting, stamping, welding, polishing, pretreatment, plastic powder spraying and curing, high-temperature heat transfer printing and cooling demolding, and parameters are accurate and controllable. Formaldehyde release is completely eradicated, the structure is stable, the appearance is vivid, wear resistance and fire prevention are achieved, the service life is prolonged by 30% or above, the production efficiency is improved by 40%, and environment friendliness and practicability are both considered.

The invention belongs to the technical field of automatic control, and particularly relates to a methanol engine heat management unit control method based on air pressure heat compensation and waste gas heat exchange. The method comprises the following steps: uniformly modeling a heat transfer process and a fluid flow process in a methanol engine heat management unit into a multi-physical domain bonding graph model containing a heat domain and a fluid domain, and setting a feature vector containing a heat domain feature and a fluid domain feature for each node; step 2, executing message passing on the graph neural network, and reading a heat domain temperature feature of a node corresponding to an air inlet of the methanol engine as a predicted air inlet temperature; and 3, the PLC enables the air inlet temperature to reach the target air inlet temperature according to the comparison result of the predicted air inlet temperature and the target air inlet temperature. According to the method, through multi-physical domain coupling modeling and graph neural network online iteration solving, the defects that in the prior art, all heat exchange parts are independently controlled, and the heat flow coupling relation of the system is ignored are overcome.

The invention discloses a heat transfer calculation method for pulsating heat pipes with adjustable inclination angles and liquid filling rates. The heat transfer performance of the pulsating heat pipes with different inclination angles and liquid filling rates is researched by adopting a numerical method; calculating the heat transfer process by solving the energy equation of the steam bomb and the energy and momentum equation of the liquid bomb, so as to predict the pulsation phenomenon of the working medium in the pulsating heat pipe; on the basis of a momentum heat mass transfer model, calculating the phase change heat transfer capacity through film condensation and a down-flow film boiling heat transfer coefficient, investigating the influence of different inclination angles on the liquid film thickness and the down-flow film speed, and increasing the influence of the down-flow film on the liquid elastic length; and the liquid bomb pulsation condition of the pulsating heat pipe under different inclination angles and different liquid filling rates is researched, and then the heat transfer performance of the pulsating heat pipe is calculated. The working heat transfer performance of the pulsating heat pipes with different inclination angles and liquid filling rates and the motion state of the working medium are analyzed and calculated, and guidance is provided for parameter development and engineering application of the pulsating heat pipes.

The invention belongs to the technical field of heat-not-burn, and relates to a heat-not-burn conductive heating glass tube and a preparation method thereof. The length-diameter ratio of the conductive heating glass tube is not lower than 5: 1, the conductive heating glass tube comprises a glass base tube, a conductive heating layer and an anti-oxidation layer, the conductive heating layer and the anti-oxidation layer are arranged on the inner wall of the glass base tube, the conductive heating layer is located between the glass base tube and the anti-oxidation layer, the conductive heating layer and the glass base tube are connected through chemical binding force, the sheet resistance of the conductive heating layer is 0.1-100 omega / square, and the thickness of the anti-oxidation layer is 50-200 nm. The conductive heating glass tube provided by the invention has the characteristics of high heat utilization rate and rapid and stable temperature rise, can directly heat substances in the tube, reduces the loss in the heat transfer process, and has remarkable application advantages in the field of heating without combustion.

The invention discloses a liquid hydrogen storage tank calculation model method based on an equivalent thermal resistance method, and relates to the technical field of low-temperature liquid hydrogen storage tanks. According to the method for constructing the multi-dimensional thermal resistance network of the liquid hydrogen storage tank, the heat transfer process of multi-field coupling inside and outside the storage tank can be accurately simulated. According to the algorithm, a complex heat transfer model is simplified into a series and parallel thermal resistance combination, the influence of geometric structures on heat transfer is considered, and the problem that a traditional calculation method is inaccurate in calculation result when facing different geometric structures is solved. According to the model, the dynamic change rule of the gas phase and the liquid phase of hydrogen along with pressure is considered, the problem that calculation deviation is caused by neglecting environmental influence in a traditional method is solved, the liquid hydrogen evaporation rate is used as a final result for evaluation, thermal resistance of all parts can be accurately marked, and the model is convenient to apply in liquid hydrogen storage tank design and high in practicability. And a designer can be assisted to quickly find out the direction needing to be optimized.

The utility model relates to the technical field of chemical separation, in particular to a dual-purpose extractive distillation tower for separating acetic acid from water, which comprises an extraction tower, a condenser I, a condenser II and a reboiler, an extraction chamber, a distillation chamber and a circulation chamber are arranged in the extraction tower, the distillation chamber and the extraction chamber are symmetrically arranged, and the circulation chamber is positioned below the distillation chamber and the extraction chamber. The first condenser and the second condenser are located above the extraction tower, the first condenser is communicated with the extraction chamber, the second condenser is communicated with the rectification chamber, and by integrating the two functions of extraction and rectification, the tower achieves effective separation of acetic acid and water. The layered contact design ensures that the acetic acid raw material and the composite extraction agent are in full contact but not directly mixed between filler layers, the mass and heat transfer process is optimized, the extraction agent can be recycled after being treated by the rectification chamber, and the resource waste is remarkably reduced. And due to the recycling design, the operation cost is reduced, and the consumption of the extracting agent is reduced.

The application discloses a kind of based on nano microcrystalline metal powder and organic liquid hydride multi-medium composite slurry hydrogen storage material and its preparation method, and multi-medium composite slurry hydrogen storage material includes nano microcrystalline metal powder for hydrolysis heat production, hydrogen release endothermic organic liquid hydride and catalyst;Nano microcrystalline metal powder content is 1~40wt.%, and organic liquid hydride content is 50~95wt.%, and the content of catalyst is 1~25wt.%.The application combines the advantages of metal powder and organic liquid hydride, by covering metal powder in organic liquid hydride, on the one hand, the passivation problem of metal powder surface is solved, effectively isolates metal powder and air contact, prevents the formation of oxide;On the other hand, the heat generated by the reaction of metal and water is absorbed by organic liquid hydride, thereby improving the mass transfer efficiency, and reducing the energy loss in heat transfer process.

The application discloses a kind of building indoor temperature prediction method and system based on thermal resistance-thermal capacity model, the method of the present application includes the heat flow in the heat transfer process of building indoor temperature is regarded as electric current, temperature difference is regarded as voltage, thermal resistance and thermal capacity correspond to resistance and capacitance respectively, the temperature transfer system of building indoor temperature is simplified and constructed to obtain the thermal resistance-thermal capacity model consisting of thermal resistance and thermal capacity;Thermal balance equation of thermal resistance-thermal capacity model is constructed;Parameter identification is carried out on thermal balance equation;The identified parameter is substituted into thermal balance equation to predict building indoor temperature.The present application aims to solve the problem that the existing building indoor temperature prediction grey box model has poor interpretability, improve the accuracy and interpretability of building indoor temperature prediction.

The utility model relates to the field of livestock slaughtering and processing equipment, in particular to a constant temperature device for scalding pool water, which comprises a main body, a fixing frame is arranged in the main body, a lifting assembly is arranged between the middle of the fixing frame and the main body, a filter screen is arranged at the upper end of the fixing frame, and a heating assembly is arranged at the lower end of the fixing frame. The filter screen, the fixing frame, the lifting assembly and the like are arranged; in the working process, the fixing frame component is adjusted to move through the lifting assembly, the fixing frame is adjusted to the preset height, the fixing frame drives the filter screen to move along with the fixing frame, livestock is supported through the filter screen component, and meanwhile it is kept that hot water in the main body can completely soak the livestock; the heating assembly is driven to move while the fixing frame component moves, so that the heating assembly is kept close to the livestock, the heat conduction range is reduced, and the problems that a large amount of heat is lost in the heat transfer process, and the processing cost is increased are solved.

The utility model belongs to the technical field of recovery heat exchange devices, and provides a fermentation liquor preheating recovery heat exchange device in sugar alcohol production. The device comprises a mounting main sleeve cover, a connecting through pipe, a sealing outer sleeve and a plate heat exchanger, the sealing outer sleeve is mounted on the mounting main sleeve cover; the mounting main sleeve cover is detachably mounted on a reaction kettle filled with fermentation liquor, and is hermetically connected with the reaction kettle filled with the fermentation liquor through the sealing outer sleeve; the mounting main sleeve cover is provided with an evaporation liquid cavity, a liquid inlet and a liquid outlet; the liquid inlet and the liquid outlet are respectively formed in the evaporation liquid cavity; the liquid inlet is communicated with an external water source; the liquid outlet is communicated with one end of the connecting through pipe, the other end of the connecting through pipe is communicated with the plate heat exchanger, and the plate heat exchanger is communicated with external equipment. Therefore, the device not only is reasonable in design, but also is simple to operate, can improve the heat efficiency in the heat transfer process, and is suitable for industrial popularization.

This invention discloses a film material and its preparation method for coating and heat transfer in a vacuum environment, belonging to the field of polymer materials. It includes a compliant layer, a support layer, and a compatibilizer. The compliant phase material is a polymer material with an elongation at break ≥200% and containing double bonds or aromatic rings; the support phase material is a polymer material with a tensile strength ≥40MPa and containing reactive polar functional groups; the compatibilizer is a material containing double bonds or aromatic rings in a single molecule and simultaneously containing reactive polar functional groups. This film material has excellent tensile strength and elongation at break, ensuring the integrity and non-deformation of the heat transfer pattern. Furthermore, the film does not burst or crack during the heat transfer process and exhibits good adaptability to curved surfaces. By adjusting the types and proportions of the compliant phase, support phase, and compatibilizer, the performance of the base film can be controllably adjusted, making it applicable to various heat transfer surface decoration scenarios such as toys, daily necessities, and small handicrafts.

The application discloses a kind of human target infrared three-dimensional model fast reconstruction method, belong to model reconstruction algorithm field.The method is first based on infrared physics to the heat transfer process on human surface is physically modeled, and utilizes the principle of graphics to generate the human infrared three-dimensional feature image of target human body under different conditions.Functions are 1) based on measured data, establish the infrared radiation database of simulation target environment.2) the heat transfer process on human surface is physically modeled using finite difference method, realizes three-dimensional human infrared model drawing.3) using computer iterative calculation generates the infrared feature image of human target in different time, place, climate condition.4) based on the principle of Planck spectrum energy distribution, long-wave infrared simulation image of human body is converted into mid-wave simulation image.Through hash algorithm, the similarity and reliability of human infrared simulation imaging result are evaluated, and the simulation similarity is higher than 70%.

This application discloses a heat exchanger based on microchannel enhanced heat transfer, including a heat exchanger body and a heat exchange mechanism disposed within the heat exchanger body. An air inlet and a cold flow outlet are respectively provided on the side of the heat exchanger body. Multiple heat-conducting rods are disposed inside the heat exchanger body, and these rods cooperate with the heat exchange mechanism. Exhaust gas is suitable for entering the heat exchanger body to enhance the heat transfer process through the multiple heat-conducting rods and the heat exchange mechanism, thereby achieving heat exchange and cooling. The beneficial effects of this application are: a heat exchange mechanism for heat transfer and cooling is disposed inside the heat exchanger body, and multiple heat-conducting rods are also disposed inside the heat exchanger body, cooperating with the heat exchange mechanism; therefore, during exhaust gas cooling, the cooperation of the heat-conducting rods and the heat exchange mechanism allows for better heat exchange and cooling of the exhaust gas, thereby improving cooling efficiency. The device is simple, reasonable, practical, and reliable.

The application provides a building hourly indoor temperature prediction method and system based on a double driving mechanism, and belongs to the technical field of building energy consumption management and control. The method comprises the following steps: selecting a heat balance differential equation with a building indoor temperature as an interface variable as a benchmark, and representing a heat transfer process of an envelope structure in a space state, so as to construct a guide module for a physical model; a data driving module is constructed, an indoor temperature change difference caused by a non-principal component item is taken as a target variable, and outdoor meteorological parameters are taken as inputs, so that a back propagation neural network is constructed and trained; the outputs of the physical model guide module and the data driving module are combined, and indoor temperature prediction is carried out based on the back propagation neural network. The application can simultaneously consider the physical authenticity of the hourly indoor temperature prediction and the accuracy and rapidity of the building hourly indoor temperature prediction.

The application discloses a human body dressing recommendation method based on environment temperature, comprising the following steps: S1, a human body physiological heat regulation mathematical model is established, a human body active regulation and passive regulation heat transfer process under different indoor and outdoor environments is simulated, and human body heat feeling change rules under different indoor and outdoor environments are revealed; S2, a clothing porous medium heat and mass transfer mechanism and an air layer distribution rule under clothes are analyzed, a clothing and air layer heat and moisture transfer coupling model is established, a human body skin surface heat and moisture transfer boundary condition is constructed, and a human body heat and moisture transfer mechanism under different indoor and outdoor environments is revealed; S3, finite difference method is used for discrete solution of the above numerical model, and the established numerical model is verified and optimized; and S4, a clothing basic style visual database is established in combination with the human body heat transfer model. The application provides the human body dressing recommendation method based on the environment temperature, and provides more scientific decision for clothing collocation of consumers under different environments.

The invention discloses an integrated multi-mode control heat transfer process experiment system and method, relates to the technical field of thermotechnical experiment equipment, and aims at solving the technical problems that traditional heat transfer experiment equipment is low in data integration level, single in control mode and poor in compatibility. According to the invention, the management system module, the electrical control module and the data acquisition and display module are integrated, a unified data management platform is established, and the problems of data dispersion and low integration level of traditional equipment are thoroughly solved. All the modules are linked through standard interfaces, parameters such as temperature and flow can be collected in real time, continuously stored, played back in a curve and exported in a general format, data recording and sorting in the whole experiment process can be completed without manual intervention, the integrity and processing efficiency of experiment data are greatly improved, and the experiment efficiency is improved. The problems that traditional heat transfer experimental equipment is low in data integration level, single in control mode and poor in compatibility are solved.

The application provides a kind of pipe bundle convection heat transfer characteristic test experimental system and experimental method based on digital twinborn technology, belongs to pipe bundle convection heat transfer characteristic test field.For solving the problem that students are difficult to intuitively analyze the movement of fluid and heat transfer process in the existing heat transfer experiment teaching, it is difficult to deeply understand the complex relationship between heat transfer and fluid mechanics, and the experimental operation and data acquisition function are not intelligent and efficient enough.A virtual and real digital twinborn experiment system is constructed, the virtual twinborn model is continuously optimized through real-time data interaction, the model accuracy and reliability are improved;Compared with the traditional virtual experiment system, the authenticity and reliability of the application are higher;Temperature, pressure field monitoring function can be realized in the area where sensors are difficult to arrange in the structure of pipe bundle heat exchanger, whether there is overtemperature and overpressure can be found in time;And to a certain extent, the temperature and pressure distribution of the system at future time is calculated, the advanced prediction and early warning function is realized to prevent equipment damage or cause safety accidents.

The invention discloses a water source conservation function evaluation method suitable for a high and cold frozen soil region, and belongs to the field of water source conservation function evaluation.The method comprises the steps that a monitoring network is laid in a drainage basin of the high and cold frozen soil region, and monitoring data are collected; the monitoring data comprises meteorological data, frozen soil data, hydrological data and vegetation and underlying surface data; improving the VIC frozen soil hydrological model by using the monitoring data; determining constraint conditions of the improved VIC permafrost hydrological model based on a permafrost characteristic water source conservation mechanism, and simulating each component of water balance of the high and cold permafrost region drainage basin by using the improved VIC permafrost hydrological model; and based on each component of water balance of the drainage basin of the high and cold frozen soil region, calculating the water conservation amount by using a water balance equation, and obtaining the water conservation capability according to the water conservation amount to complete water conservation function evaluation. According to the invention, key processes such as frozen soil thermal conductivity overestimation abnormity and accumulated snow sublimation effect supplementation are eliminated, and the simulation precision of the hydrothermal transmission process is improved.

The invention relates to a method for storing thermal energy by means of at least two containers, each of which is filled with a solid filling material, a thermal storage medium for storing and / or releasing thermal energy being introduced into and / or discharged from the containers in sequence, a temperature storage being carried out in a temperature stratified manner by means of the solid filling material in the respective container, and the heat storage medium is used for a heat transfer process during storage and / or release of (thermal energy). The invention also relates to a corresponding thermal energy store.