2398 results about "Heat losses" patented technology

The invention relates to the technical field of control, and particularly discloses a multivariable energy efficiency optimization control system for a heating furnace, which is used for solving the problems of local overheating, non-uniform temperature and difficulty in accurate positioning and compensation of heat loss in the operation of the existing cracking heating furnace. Comprising a parameter detection module, a multivariable coupling modeling and simulation module, an optimization control module and an execution and feedback module. According to the method, dynamic digital twinning is constructed through multi-modal online sensing and data assimilation, a Pareto frontier solution is generated based on model prediction control and improved NSGA-II parallel optimization, and the weight is adaptively adjusted; and when the hot spot / cold spot is triggered, a quadric surface fitting compensation strategy is implemented and issued for execution, so that high-precision simulation prediction, precise closed-loop control and real-time online energy efficiency optimization are realized.

The invention discloses a molten salt heat storage and heat exchange efficiency optimization system and method in a whole-plant technological process. The system comprises a high-temperature molten salt storage tank, a low-temperature molten salt storage tank, a temperature sensor group, a variable-frequency pump group, a multi-stage heat exchanger, an intelligent control unit, a heat buffer module and the like, and the high-temperature molten salt storage tank and the low-temperature molten salt storage tank are connected through a conveying pipeline to form a circulation loop. The intelligent control unit regulates and controls the rotating speed of the pump set and the valve opening degree based on a fuzzy PID algorithm, the heat buffering module reduces heat loss, and the multi-stage heat exchanger enhances heat exchange. The method comprises the steps of temperature and flow data collection, efficiency deviation value calculation, fuzzy PID control, thermal buffer optimization, waste heat feedback and the like. Besides, the system also has the functions of digital twinborn prediction, multi-objective optimization, abnormal working condition self-healing and the like, can be connected with a DCS (Distributed Control System) to obtain energy consumption data and dispatch stored energy, and also can predict equipment faults. The fused salt heat energy storage and heat exchange efficiency is effectively improved, reasonable energy allocation and cost control are achieved, and the reliability and stability of the system are enhanced.

The invention relates to the technical field of communication and network transmission, in particular to a terminal data acquisition and transmission method for a long-distance heat supply pipeline. The method comprises the following steps that long-distance heat supply pipeline laying area data are obtained, pipe network laying form analysis is carried out, and single-pipe branched heat supply pipe network data are obtained; constructing a pipeline laying model based on the data of the single-pipe branched heat supply network; performing intelligent heat energy flow simulation based on the pipeline laying model, and calculating heat loss in the heat energy flow simulation process to obtain heat loss data; performing thermal protection thermal insulation material integration on the pipeline laying model based on the heat loss data to obtain composite thermal insulation material data; and identifying a straight pipe section of the pipeline laying model, and calculating the minimum thick wall of the straight pipe section to obtain minimum thick wall data. The heat efficiency, the stability and the intelligent management capability of the pipeline system are improved based on the communication and network transmission technology.

The invention relates to the technical field of agricultural intelligent equipment, and discloses a multi-mode sensing fusion control system for an aerogel greenhouse heat preservation quilt. An environment multi-mode monitoring module of the system collects internal temperature and humidity distribution, illumination intensity gradient, soil moisture content profile and external meteorological change data of a greenhouse in real time to generate an environment comprehensive monitoring data set; based on the data set, the thermal insulation mode decision module analyzes the difference between the thermal energy loss rate and the thermal insulation demand of different areas in combination with the physical characteristic parameters and historical regulation and control records of the aerogel thermal insulation quilt, matches a dynamic thermal insulation strategy and generates a multi-stage partition regulation and control instruction; the cooperative parameter optimization module calculates a combination scheme of the unfolding angle, the coverage area and the thickness of the heat preservation quilt, and adjusts a partition cooperative control parameter set; the multi-mode execution controller generates a heat preservation quilt dynamic regulation and control map; the anomaly fusion diagnosis module monitors anomalies and generates a set of regulation error correction factors. The system realizes fine, dynamic and intelligent regulation and control of greenhouse heat preservation.

A polyimide film production line, comprising a steel belt casting machine (A), a peeling transition unit (B), a transverse stretching machine (C), an inspection unit (D), an annealing unit (E) and a winding unit (F) which are sequentially arranged, wherein a drying oven (1) of the steel belt casting machine (A) comprises a frame (11), outer thermally-insulating structures (5) arranged on two sides of the frame (11), and an upper air duct assembly (193) and a lower air duct assembly (194) which are arranged on the frame (11); the frame (11) comprises a bottom thermally-insulating layer (111), a middle-lower heat thermally-insulating layer (112), a middle-upper thermally-insulating layer (113) and a top thermally-insulating layer (114) which are sequentially spaced apart from each other from bottom to top and are parallel to each other; and the transverse stretching machine (C) comprises a transverse pulling box body (7) and a conveying system, and inner tracks (85) located in the transverse pulling box body (7) and outer tracks (86) located outside the transverse pulling box body (7) are provided between a driving sprocket assembly (82) and a driven sprocket assembly (81) of the conveying system. The polyimide film production line effectively reduces the total heating space in the drying box (1) and in the transverse pulling box body (7), the structure is more compact, and the heat loss during heat transfer is reduced, such that the energy consumption can be reduced, and the production cost is reduced.

The invention relates to the technical field of computer aided design, in particular to an energy-saving building design method based on digital simulation, which comprises the following steps: analyzing air velocity, temperature gradient, density and pressure distribution based on indoor aerodynamic parameters, identifying air vortex structure characteristics, and generating an energy-saving building environment data set. According to the method, aerodynamic characteristics in a building are accurately recognized, the vortex structure analysis capacity is improved, the air flowing path is optimized, aerodynamic parameters are combined, thermal resistance and heat conduction materials are matched, the building envelope layer is adjusted, heat flow transmission is guided, heat loss is reduced, the heat energy utilization rate is increased, and the spectral characteristics of the materials are adjusted according to illumination redundancy; the lighting efficiency is optimized, the heat load is reduced, outer wall heat transfer is optimized in combination with airflow characteristics, the ventilation rate is dynamically regulated and controlled, airflow short circuit is avoided, heat flow, illumination and ventilation parameters are integrated, precise optimization of building energy consumption is achieved, and the energy efficiency regulation and control level is improved.

The invention discloses a planning design and optimized operation method for a heat supply system introducing a long-distance heat source, which comprises the following steps: acquiring basic data of the long-distance heat source to be introduced into the heat supply system in a heating season, and analyzing the operation mode change and dynamic characteristic change of a heat supply network of the existing heat supply system after the long-distance heat source is introduced; performing quantitative analysis and comparison on the plurality of heat supply network planning and design schemes in combination with external heat supply industry evolution data in a heat supply season to obtain an optimal heat supply network planning and design scheme; spatial characteristic data and time characteristic data related to the heat supply system are obtained, a space-time model of the heat supply system is established, and heat load prediction of each heat supply network area is carried out in combination with the heat load multi-dimensional influence data; and according to the heat load prediction value of each heat supply network area, combining the multi-dimensional heat supply loss, the heat source output characteristic and the heat supply network heat transmission and distribution characteristic of the long-distance heat source and the traditional heat source, and considering a heat source optimization operation target and a heat supply network regulation and control target, establishing a multi-time scale optimization operation model, and obtaining a corresponding optimization operation strategy.

The invention relates to the technical field of wafer test equipment, in particular to a heating aging test tool which comprises a storage rack and further comprises a wafer clamp placed on the storage rack. The detection assembly comprises a plurality of elastic probes located on one side of the storage rack and a heating disc; and the hot air guide assembly comprises a ventilation male head arranged on one side of the heating disc, an air guide pipe is arranged on the side, away from the ventilation male head, of the heat conduction cover, the air amount in the cavity is gradually decreased from near to far away from the air guide pipe, and the air flow speed is gradually decreased. A hot air flow guide assembly is arranged on a conveying frame, heat of a heating disc is guided to the position above a wafer through airflow through a heat conduction cover, the space above the wafer is divided into a plurality of cavities, the space size and the space shape of each cavity are set, the air flow speed and the contained hot air amount of each space are adjusted, and therefore the heat conduction efficiency of the wafer is improved. The influence of heat loss in the air flow process is reduced, so that the heating effects of all parts of the wafer are similar, and the detection effect is improved.

The invention relates to the technical field of energy storage module temperature control, in particular to an energy storage module multi-environment temperature automatic regulation and control unit and a regulation and control method thereof.The energy storage module multi-environment temperature automatic regulation and control unit comprises an external protection frame body installed on the outer side of an energy storage module, and an internal heat exchange flow channel used for adjusting the heating value of the energy storage module is arranged in the external protection frame body. According to the energy storage module multi-environment temperature automatic regulation and control unit and the regulation and control method thereof provided by the invention, by adopting the liftable cover body structure design, the heat exchange mode of the energy storage module can be changed according to the temperature change of the internal environment and the external environment, so that the regulation and control performance of the energy storage module at different environment temperatures is improved, and the applicability is improved; the flow direction of an internal heat exchange runner is changed through lifting adjustment of the upper lifting cover, so that heat loss is switched, and the energy consumption of the energy storage module is reduced; and by adopting an automatic regulation and control mode, the operation accuracy can be improved.

The invention discloses an efficient pulsating heat pipe air pre-heater gas stove, and relates to the technical field of gas stoves. The air pre-heater comprises an air pre-heater body, a pulsating heat pipe and an air supply pipeline, the pulsating heat pipe is embedded in an inner cavity of the air pre-heater body, and the bottom of the air pre-heater body communicates with the top of the air supply pipeline; the air pre-heater body comprises a heat insulation radiation cavity and an air pre-heating cavity. The heat transfer efficiency of the pulsating heat pipe is far higher than that of traditional metal heat conduction, heat of high-temperature flue gas can be rapidly absorbed, waste heat loss is reduced, the heat efficiency is improved, secondary air is heated through the air preheater, the temperature of the secondary air is increased, the combustion temperature is increased, gas combustion is more sufficient, emission of carbon monoxide and nitric oxide is reduced, and the energy-saving and environment-friendly effects are achieved. The pulsating heat pipe has the unique advantages of being small and exquisite in structure, flexible in arrangement and efficient in heat transfer, and the heat efficiency of the gas stove is effectively improved through the L-shaped pulsating heat pipe heat insulation air pre-heater structure.

The invention relates to an intelligent generation method, system and device for a passive design scheme of a green building and a medium. The method comprises the following steps: firstly, collecting site limitation data and climate data, inputting the data into a thermal performance simulation model, and outputting building heat loss and solar heat gain distribution; based on the result, a genetic algorithm is used for optimizing parameters such as the building orientation and the window-wall ratio, and a building design parameter combination is formed through energy consumption calculation, standard judgment and iterative optimization. Then, thermal and economic parameters are extracted from the design parameters to construct a data set, the parameters are screened to generate a building layout optimization instruction, and the layout is adjusted in combination with a dynamic adaptation standard to obtain an optimization scheme. And finally, associating the optimized layout with site parameters, performing energy model optimization to form a low-carbon scheme, and coupling environment adaptability data to generate a sustainable development scheme. By means of the method, the problems that traditional design parameter optimization is low in efficiency and multiple targets are difficult to balance can be solved, layout reasonability and energy consumption control precision are improved, and low carbon of the whole life cycle of the building is assisted.

The invention discloses an infrared inspection equipment transformer energy efficiency grade determination method based on deep learning. The method comprises the following steps: 1, collecting data and synchronizing the data; 2, preprocessing the original infrared image; 3, constructing a steady-state heat conduction model, and generating a simulated heat flux diagram; 4, constructing a response function, and performing position alignment through affine transformation to obtain a registration image pair; 5, generating an infrared characteristic tensor and a heat flux characteristic tensor; step 6, generating a heat loss offset feature map; 7, inputting the heat loss offset feature map into an improved SAM Adapter model, and introducing a guide type structure perception mechanism to generate a heat dissipation anomaly representation tensor; and 8, inputting the heat dissipation abnormity representation tensor into the classifier, and obtaining an energy efficiency grade determination result of the transformer. According to the method, steady-state heat conduction modeling and the improved SAM Adapter model are fused, and intelligent judgment of the energy efficiency level of the transformer is achieved.

The invention provides a power transmission line icing multi-mode monitoring method and system, relates to a line deicing technology, and adopts a flaming type unmanned aerial vehicle to perform deicing operation, to perform deicing operation on a power transmission line through a single unmanned aerial vehicle, and to perform deicing operation on the power transmission line through cooperation of a plurality of unmanned aerial vehicles. According to the unmanned aerial vehicle, the deviation degree of flames can be detected in the deicing process, so that the deicing angle of the unmanned aerial vehicle can be adjusted when the deviation of the flames is too large, flame deviation and heat loss caused by wind interference are reduced, heat can be more effectively transmitted to an ice layer, ice layer melting is accelerated, and the deicing speed and effect are improved.

The invention relates to the technical field of heat supply control, in particular to a heat supply secondary network branch line intelligent hydraulic equilibrium method and device, a medium and a product. The method comprises the following steps: constructing a branch topological graph of a heat supply secondary network in a target heat supply area; the environment temperature is obtained in real time, the heat supply station is controlled to supply heat to each heating single body in the target heat supply area based on the dynamic flow control strategy, and the node flow and the node temperature of each node in the branch topological graph are collected; constructing a branch heat supply loss model of the branch topological graph based on the environment temperature, the node flow and the node temperature; the monomer temperature and heat supply backflow data of each heating monomer are obtained, and a monomer heating model is constructed for each heating monomer based on the environment temperature, the monomer temperature and the heat supply backflow data; and determining a flow regulation and control strategy based on the monomer heating model and the branch line heat supply loss model, and adjusting the monomer heat supply flow of the heat supply secondary network based on the flow regulation and control strategy. According to the method, heat supply hydraulic balance can be achieved through precise flow regulation and control precision.

The invention relates to a coating, in particular to a radiation refrigeration heat insulation coating and a preparation method thereof, and the radiation refrigeration coating comprises a water-based emulsion, a reflective inorganic filler, a radiation inorganic filler water-based emulsion, a radiation inorganic filler, functional nanocellulose and a functional additive. The radiation refrigeration coating can reflect energy of a sunlight wave band (0.3-2.5 [mu] m) and perform radiation heat exchange with the universe by utilizing an atmospheric window (8-13 [mu] m), and the cooling effect lower than the environment temperature can be achieved. In high-temperature weather in summer, the surface temperature of a building can be effectively reduced, and the use frequency of an air conditioner is reduced, so that energy consumption is remarkably reduced. Meanwhile, by adding heat insulation type inorganic filler (such as hollow glass beads, silicon dioxide aerogel and the like), the heat conductivity of the coating is reduced, the loss of heat in a building is reduced, and the heating energy consumption in winter is reduced. Due to the dual functions, the coating can achieve an energy-saving effect throughout the year, and the environment-friendly concept of energy conservation and carbon reduction is met.

The invention provides a wafer cleaning and drying method and equipment, and the method comprises the steps: spraying a drying chemical to the center of a wafer fixed on a bearing platform, and starting the bearing platform to drive the wafer to rotate, so as to enable the drying chemical to diffuse from the center of the surface of the wafer to the edge; the heating device located above the bearing table is provided with at least two circles of heating lamp rings which are concentrically distributed, and the heating lamp rings heat the currently diffused edge area of the dry chemical in the process that the dry chemical is gradually diffused from the center to the edge of the wafer on the surface of the wafer. The wafer drying device is used for solving the problems that in the prior art, due to the fact that a drying chemical makes contact with a wafer to generate heat exchange, heat loss is caused, the drying chemical cannot be kept at the optimal working temperature to dry the surface of the wafer, and the drying effect of the wafer cannot meet the production requirement easily. Therefore, the drying chemicals are ensured to be at the optimal working temperature when the wafers are dried.

The invention provides a coal-fired boiler digital twin modeling and intelligent control method, system, equipment and medium, and belongs to the technical field of thermal equipment intelligent control. The method comprises the steps that coal element analysis data, boiler operation parameters and environment parameters of a coal-fired boiler are collected in real time and preprocessed; calculating an external heat source sum and a heat loss sum, and outputting boiler heat efficiency; a twinborn model is constructed, model parameters are calibrated through data collected in real time and calculated boiler thermal efficiency, and boiler indexes are dynamically simulated and output; taking the collected data and the analog output boiler indexes as input characteristics, predicting boiler operation parameters through an LSTM model, generating an optimization control instruction by adopting a multi-objective optimization algorithm, inputting twin model simulation, outputting prediction parameters, and executing the control instruction when the prediction parameters meet preset constraints; and updating LSTM model training data according to the operation result. Intelligent monitoring optimization of the boiler is achieved, and efficiency, safety and environmental protection performance are improved.

The invention provides a coal mine multi-source waste heat intelligent utilization system and method based on cross-seasonal heat storage, and relates to the technical field of coal mine waste heat utilization, and the system comprises the steps that a heat prediction module monitors and obtains a plurality of historical redundant heat sequences of a plurality of coal mine waste heat sources, and carries out heat prediction in a preset time window; a heat supply demand prediction module reads the heat use characteristic sequence and the associated heat use characteristic sequence and performs heat supply demand prediction; a heat storage scheme optimization module performs heat storage scheme optimization and outputs an optimal heat storage proportion sequence by taking a heat supply quantity sequence meeting a predicted demand as a conditional constraint, taking the maximum capacity of heat storage equipment as an equipment constraint and taking the minimum heat loss as a target; and the heat storage management and control module executes heat storage management and control in a preset time window according to the optimal heat storage proportion sequence. The technical problem that in the prior art, waste heat cannot be effectively stored can be solved, the technical target of intelligent regulation and control system construction is achieved, and the technical effect of improving the waste heat utilization efficiency is achieved.

The invention belongs to the technical field of GIL temperature rise response, and relates to a conductor temperature rise prediction model based on a GIL temperature rise characteristic rapid calculation method, and the model is a three-dimensional finite element simulation model constructed according to the actual size and shape of a GIL; a two-dimensional finite element simulation model is established according to the actual size and shape of the cross section of the GIL, and the unit area loss density of a conductor and a shell is calculated according to Joule heat loss and eddy-current loss in the unit area of the GIL; solving node electromagnetic loss according to the loss density, applying the node electromagnetic loss as a heat source to the three-dimensional finite element simulation model, and carrying out repeated iteration by using a coupling control equation established according to a change relation of material physical parameters and thermodynamic parameters along with temperature until a convergence condition is met so as to calculate a discrete temperature rise characteristic of the GIL under a preset working condition; and establishing a discrete image function according to the discrete temperature rise characteristic data, and establishing a temperature rise prediction model by fitting the function through the characteristic points.

The invention relates to a heat treatment technology, in particular to a heat treatment furnace for processing a heating plate and a heat treatment process thereof, comprising a heat treatment furnace, a furnace chamber arranged in the heat treatment furnace, and a first furnace door and a second furnace door respectively rotationally connected to two ends of the heat treatment furnace. According to the invention, through the reasonably designed structure combination and connection relation of the heat loss prevention structure, the feeding frame is arranged in the furnace chamber of the heat treatment furnace, so that a plurality of heating plates are allowed to be placed on different feeding frames in batches and are conveniently pushed into the heat treatment furnace for treatment, and the heating plates can be conveniently pushed into the heat treatment furnace for treatment in the feeding and discharging process of the feeding frame. The heat loss prevention structures can effectively shield and block the heating wires on the two sides of the furnace cavity, so that when the first furnace door is opened, the heating wires can be protected by the heat loss prevention structures and are located in the closed space of the side wall of the furnace cavity for heating and temperature storage, and heat loss can be effectively reduced through the design; therefore, a more stable and efficient heat treatment environment is provided for subsequent heating disc treatment.

The invention discloses a wafer heating temperature sensing device and a detection method, and the method comprises the steps: coating a threaded end of a temperature sensor with high-temperature heat-conducting lubricating grease, carrying out the high-pressure washing of a threaded tooth tip end of a wafer heating block and a micro-texture gap of an inter-tooth recessed part, and enabling the micro-gap to be filled with the high-temperature heat-conducting lubricating grease, so as to enable the distribution density of the high-temperature heat-conducting lubricating grease to be uniform; gradient thermal compensation radiation heating is adopted, and wafer edge heat loss is dynamically compensated; compensating the temperature fluctuation of the wafer edge area and the wafer center area; the embedded scanning combination detection subsystem scans the surface of the wafer through an infrared thermal imager array and forms a temperature detection combination in combination with an embedded temperature sensor, so that the temperature detection precision and the temperature difference resolution are improved; according to a large amount of wafer heating detection data, through big data statistical analysis, a wafer heating temperature rise process and a wafer heat dissipation process are controlled, temperature difference overshoot in the wafer heating process is balanced, and cooling and heat dissipation uniformity is kept; the fluctuation trend of the surface temperature and the internal temperature of the wafer is predicted, and temperature abnormity is warned in advance.

The invention relates to a preheating device and process for a dry-method cross-linked wire conductor core. The preheating device comprises a drying bin, a heating bin and a heat preservation bin which are sequentially arranged in the set direction and communicate with one another, and a heat source assembly used for providing a heat source for the drying bin, the heating bin and the heat preservation bin. The heat source assembly comprises a heater and an air inducing device, and the heater is arranged in the heating bin and used for heating the conductor wire core; the air inducing device is installed on the heating bin and used for inducing air into the heating bin to be subjected to heat exchange with the heater and correspondingly conveying the air subjected to heat exchange to the heating bin and the heat preservation bin. According to the invention, the temperature uniformity of conductor wire core preheating can be effectively improved, the heat loss is reduced, and the heating efficiency is effectively improved.

The air blowing head of the air heater comprises an air head part, the air head part is provided with a heating groove, the cross section of the heating groove is non-circular, an air channel is formed in the air head part, and air outlet holes are distributed in the inner wall of the heating groove and used for guiding hot air in the air channel into the heating groove and heating a workpiece. A feeding hole is formed in one side of the air head part, the feeding hole is communicated with the heating groove and is used for introducing a to-be-heated workpiece into the heating groove, the width of the feeding hole is smaller than that of the heating groove, and the air outlet hole close to one side of the feeding hole is configured to face the inner side of the heating groove. Through the arrangement of the non-circular heating grooves and the optimized air outlet holes, hot air escape is effectively reduced, the heating efficiency and uniformity are improved, meanwhile, it is ensured that workpieces are rapidly preheated, and heat loss is reduced.

The invention belongs to the technical field of solar photo-thermal power generation, and discloses a tower type solar power generation system based on lunar soil particle moving bed heat exchange, which utilizes local materials of lunar soil to prepare solid heat storage particles as a heat transfer and heat storage medium, greatly reduces the mass and volume of the system and the cost and risk of transporting materials from the earth, and improves the energy efficiency. The efficient particle moving bed heat exchanger combining the particle receiver and the heat collector utilizes direct efficient contact heat exchange between solid particles and between the particles and a heat exchange working medium, has the characteristics of high heat exchange efficiency, small heat loss and compact structure, and is particularly suitable for space vacuum and microgravity environments; it is ensured that heat is reliably and stably transmitted to the Brayton cycle power generation system from concentrated solar energy, and power is generated through the Brayton cycle power generation system.

The invention discloses a heat storage device in a heat storage type compressed air energy storage system and an energy storage and release method. A working mode that a cold tank and a hot tank are shared is adopted, and energy savers are arranged between spherical tanks, so that fatigue damage generated by gas at the tops of the cold tank and the hot tank can be reduced, and energy loss generated by cold and hot mixing can be reduced; specifically, in the energy storage process of the heat storage device, low-temperature water enters another spherical tank after passing through an inverted tank pump and a compressor side heat exchange system in the energy storage and release heat exchange system, the low-temperature water absorbs heat on the compressor side and then is guided into the spherical tank, and steam in the spherical tank flows to an energy saver from a corresponding gas phase pipe; the water in the bypass pipe flows back into the spherical tank after heat exchange and condensation with bypass water flowing through the energy saver, fatigue damage caused by the fact that high-temperature gas in the spherical tank flows into other cold-state spherical tanks is avoided, meanwhile, the water in the bypass pipe flows back into the spherical tank after absorbing heat of the steam through the energy saver, and meanwhile the heat in the steam can be absorbed through the energy saver. And heat loss is avoided.

The invention provides a heat and cold storage water body system based on a multi-head water distributor and a working method of the heat and cold storage water body system, and belongs to the technical field of water body heat storage. High-temperature water is stably injected into the upper layer of a water body through the suspended water distributor at the top, and low-temperature water is injected through the exposed water distributor at the middle lower part, so that mixing of cold water and hot water is reduced to the greatest extent, and stable temperature stratification is quickly formed and maintained. Therefore, the invalid mixing loss of cold and heat is obviously reduced, and the effective heat storage / cold storage capacity and the heat exchange efficiency of the water storage device are greatly improved. The floating type heat preservation top cover directly covers the water surface, upward evaporation heat dissipation and convection heat dissipation on the water surface are effectively blocked, heat loss of the water body is greatly reduced, the heat preservation performance of the system is excellent, and the energy storage efficiency is high.

The invention discloses a prediction method for the anti-condensation heat demand of a fused salt storage tank based on a physical information neural network, and belongs to the technical field of operation management of a fused salt heat storage system of a photo-thermal power station. The method comprises the following steps: constructing a physical information neural network model of a fused salt storage tank system; environment parameters and tank body temperature field parameters of the fused salt storage tank system are collected, model training is carried out, the number of model iterations is set according to the composite loss function, and the dynamic mapping relation between the environment parameters and a tank body temperature field is obtained; on the basis of weather forecast data and the dynamic mapping relation, the temperature change of the fused salt in the storage tank during shutdown is predicted; and a heat loss integral equation is established in combination with freezing point characteristics, and the minimum anti-condensation heat demand during the shutdown period is calculated. According to the method, the problem of prediction misalignment of a traditional empirical model and a pure data driving method under complex meteorological conditions is effectively solved, and accurate calculation of the minimum anti-condensation energy is realized.

The invention belongs to the technical field of photovoltaic operation and maintenance management, and particularly provides a photovoltaic operation and maintenance management system based on multi-modal data, and the system mainly comprises a basic data module which obtains the three-dimensional coordinates of a photovoltaic array and the installation inclination angle data of a photovoltaic module; the thermal field acquisition module is used for instructing the unmanned aerial vehicle to fly based on the three-dimensional coordinates of the photovoltaic array, and synchronously acquiring an infrared thermal map and environmental parameters to generate a string thermal field with the environmental parameters; the anomaly positioning module is used for calculating an inclination angle difference of adjacent assemblies based on installation inclination angle data, generating an inclination angle gradient distribution diagram and positioning coordinates of a local temperature rise anomaly region by combining the group string thermal field; and the temperature rise correction module is used for performing heat loss compensation correction on the coordinates of the local temperature rise abnormal region and analyzing the real temperature rise amplitude. According to the invention, real hot spots are accurately identified, the diagnosis false alarm rate is reduced, the operation and maintenance resource configuration is optimized, the fault response speed and precision are improved, and reliable operation and operation and maintenance efficiency of the photovoltaic system are guaranteed.

The invention relates to the technical field of comprehensive energy systems, in particular to a hydrothermal dynamic coupling method and system for a comprehensive energy heat supply pipe network. A dynamic hydraulic model and a dynamic thermal model are constructed by acquiring hydraulic parameter data and thermal parameter data of the heat supply pipe network, and an improved forward feedback iteration method (MFBI) is adopted to perform coupling solution on the two models to obtain the hydrothermal dynamic coupling characteristics of the heat supply pipe network of the comprehensive energy system. Wherein the dynamic hydraulic model is based on a fluid continuity equation and a motion equation, the dynamic thermodynamic model comprises a radial heat loss model and an axial heat transfer model, and the MFBI method effectively solves the problem of difference of hydraulic and thermodynamic parameters on the time scale by executing a plurality of hydraulic calculation step lengths in a thermodynamic calculation period. According to the method, the hydraulic dynamic change process in the heat supply pipe network at the initial stage of load change can be effectively simulated, the safety of the pipe network for dispatching optimization of the comprehensive energy system is improved, and technical support is provided for efficient and clean utilization of energy.

The invention discloses a dynamic self-adaptive radiation refrigeration material which comprises the following components in percentage by mass: 15-30% of matrix resin, 40-60% of a ternary function system, 1-3% of a dispersing agent, 2-5% of a cross-linking agent and the balance of deionized water, the ternary function system is composed of a temperature-sensitive block copolymer, phase change microcapsules and rare earth doped infrared emission particles according to the mass ratio of (1-2): (2-3): (1-1.5). According to the refrigeration material, when the environment temperature is higher than the low critical solution temperature of the temperature-sensitive copolymer, the temperature-sensitive chain segment shrinks to expose the rare earth particles, so that high reflectivity of sunlight and high emissivity of an atmospheric window are realized, and refrigeration is enhanced; when the temperature is lower than the phase-change temperature of the phase-change material, the temperature-sensitive chain segments stretch and wrap the rare earth particles, the infrared emissivity is reduced, heat loss is reduced through phase-change heat release, the dual functions of efficient refrigeration in summer and heat loss reduction in winter are achieved, and the applicability of the coating in an area with the large temperature difference is improved.