682 results about "Thermal techniques" patented technology

The invention relates to the technical field of data center heat dissipation, and particularly provides a single-phase and two-phase immersion liquid cooling method and system based on AI intelligent decision, and the method comprises the steps: injecting coupled data into a dynamic feature extraction engine, and outputting a thermodynamic state evolution tensor which comprises the characteristics of a temperature change rate, a load-heat flux density coupling coefficient and the like; the thermodynamic state evolution tensor is input into the deep neural network model, the temperature and pressure matched with the current thermodynamic state evolution tensor are calculated, and a closed-loop control instruction set capable of being executed by equipment is generated; a closed-loop control instruction set is injected into an execution mechanism set, execution mechanisms execute power reconstruction and flow channel switching according to instructions, gaseous fluorinated liquid is liquefied and flows back through an efficient condenser in a two-phase mode, and heat dissipation mode self-adaptive switching and heat cycle reconstruction are achieved. The system comprises a server, an AI algorithm controller, a cooling liquid storage device, a condenser, a circulating pump, an electric valve, a pressure release valve and a temperature sensor. The heat dissipation efficiency and the system reliability are remarkably improved.

The invention discloses a cold plate-immersion liquid cooling cooperative heat dissipation method based on steam zone coupling modeling, and relates to the technical field of cooperative heat dissipation. Comprising the following steps of S1, collecting collaborative heat dissipation monitoring data of each key position in real time, and performing data preprocessing; s2, the comprehensive risk of the steam area is judged, and a risk cooling adjustment instruction is issued according to the comprehensive risk judgment result; s3, receiving a risk cooling adjustment instruction, carrying out collaborative heat dissipation, evaluating the collaborative heat dissipation capability, adjusting the rotating speed of a circulating pump and the opening degree of a valve, and requesting condensation backflow adjustment; s4, judging the adjusting quantity of condensation reflux, executing reflux adjustment and performing safety monitoring; and S5, continuously monitoring the data of each link, and carrying out anomaly detection on the state of each link to realize anomaly regulation and control. The problems that in an existing single-phase cold plate or two-phase immersion liquid cooling mode, steam accumulation is prone to occurring in a high-heat-flow scene, so that the pressure intensity is increased, the boiling point is increased, and the heat exchange efficiency is reduced, and then the operation reliability of equipment is affected are solved.

The invention discloses a transistor high-power electromagnetic heat model optimization system based on deep learning, and relates to the technical field of electromagnetic heat. Comprising an input module, a deep learning module, a global optimization module, an online adaptive module and a real-time simulation module. The input module obtains various key parameters and constructs a high-dimensional input space; the deep learning module constructs a deep learning model by embedding a physical constraint and uncertainty quantization mechanism; the global optimization module is used for carrying out global search on design parameters, rapidly evaluating a target function by utilizing an agent model, and searching a Pareto optimal solution in a design parameter space; the online adaptive module is used for drift detection and updating; the real-time simulation module simulates an electromagnetic field and a thermal field in real time, and data exchange ensures timely synchronization of boundary data through dynamic scheduling and load balancing; all the modules cooperate with one another through data and feedback, and a complete, closed-loop and continuously self-adaptive updating optimization system is achieved.

The invention discloses an intelligent building heating and ventilation automatic control method and system based on digital twinning, and relates to the technical field of intelligent heat supply. The method comprises the specific steps that entity data of a building and a heat supply system are obtained, a building heat supply system twinborn model is constructed, and a digital twinborn automatic control system is constructed based on the building heat supply system twinborn model; deploying a multi-modal sensing network, and constructing a distributed data monitoring system; real-time data collected by the distributed data monitoring system is input into the digital twin automatic control system, and a dynamic control strategy is generated in combination with historical data; and the heat supply system is controlled to execute actions based on the dynamic control strategy, and feedback data are sent to the digital twin automatic control system for control strategy optimization. According to the invention, the response speed of the system is obviously improved, and the adaptability to complex and changeable environments is enhanced.

The invention relates to the technical field of industrial computer heat dissipation, in particular to an industrial computer memory and storage collaborative heat dissipation system which is used for solving the problems that in the prior art, temperature distribution modeling and state evaluation cannot be achieved, thermal state categories cannot be divided by integrating a temperature threshold value and an operation state, and the equipment health judgment accuracy is reduced. According to the invention, a temperature control monitoring module constructs a thermal field model by using operation state and thermal behavior data, divides hardware units, establishes a heat conduction path, realizes temperature distribution modeling and state evaluation, calculates thermal power density through standardized parameters, and solves steady-state temperature by using a numerical method in combination with boundary conditions and a cooling model. Structured temperature information is output, a temperature threshold value and an operation state are integrated to divide thermal state categories, and the equipment health judgment accuracy is improved.

The invention belongs to the technical field of intelligent heat supply, and provides a green power consumption heat storage and release matching control method and system based on a water heat storage boiler, and the method comprises the steps: firstly obtaining a heat load prediction sequence and an electric power spot market price prediction sequence of a heat supply system; secondly, regarding the heat supply network as a graph structure composed of nodes and pipelines, and establishing a pipe network dynamic model for describing the hydraulic and thermal characteristics of the heat supply pipe network; and finally, with the purpose of minimizing the comprehensive operation cost of the heat supply system in the whole scheduling period, and with the whole network heat balance, heat source operation, centralized heat storage device operation, heat supply network safety and user comfort as constraint conditions, solving to obtain a source network load storage cooperative control strategy. The purpose of integrated collaborative optimization of the heat source, the energy storage, the pipe network and the load is achieved, a scheduling strategy with better economical efficiency can be generated, and the problems that the absorption capacity is insufficient, and the overall operation economical efficiency of the system is not high are solved.

The invention provides a three-period minimal curved surface change heat exchanger for airborne intermittent high-heat-flux surface heat dissipation, and belongs to the technical field of phase change heat storage. According to the technical key points, the flow channels are divided into hot fluid flow channels allowing hot fluid to pass through and preventing cold fluid from flowing and cold fluid flow channels allowing cold fluid to pass through and preventing hot fluid from flowing, and the hot fluid flow channels and the cold fluid flow channels intersect in direction and are alternately arranged to form effective heat exchange channels. A phase change material is packaged in a hot fluid flow channel by adopting a three-period extremely-small curved surface structure, and the structure is used as a primary heat exchange surface, so that rapid heat exchange between the phase change material and hot fluid is promoted, and the heat storage rate is increased; cooperative disturbance structures matched with the three-period extremely-small curved surfaces are arranged in the cold fluid flow channels, heat exchange between the phase-change materials and the cold fluid is further promoted, and the heat dissipation rate is increased. The device has the advantages of being compact in structure and high in heat storage / release rate, and the requirements of high-power equipment in the instantaneous heat storage and dissipation process are effectively met.

The invention relates to the technical field of tractor heat dissipation, in particular to a modular integrated tractor heat management method which comprises the steps that an engine radiator, a condenser, an engine oil radiator and a hydraulic radiator are arranged on the air outlet side of a cooling fan with the fan blade angle adjustable in a centralized mode; when the tractor operates in a working condition state, actual temperature data of an engine heat dissipation module, a transmission system heat dissipation module, a hydraulic system heat dissipation module and an air conditioning system heat dissipation module are collected; preset temperature difference data and preset fan rotating speed data corresponding to the working condition state are obtained; calculating an actual temperature difference value corresponding to the preset temperature difference value; and judging the actual temperature difference value of each item and the corresponding preset temperature difference value in real time, and controlling the wind direction and the rotating speed of the cooling fan in real time according to the judgment result. The invention further provides an electro-hydraulic control heat dissipation system applying the thermal management method. Heat dissipation and reverse blowing cleaning self-cleaning are carried out on all radiators of the tractor, the power loss is reduced, and the energy loss is reduced.

The invention discloses a manufacturing method of a reconfigurable LPCAMM storage device, and relates to the technical field of production of storage devices, and the manufacturing method of the reconfigurable LPCAMM storage device realizes comprehensive improvement of technical performance, production efficiency and commercial value through an innovative modular hierarchical architecture and process collaborative design. On the basis that the compact characteristic of a traditional LPCAMM is kept, through the dual effects of mechanical guiding and elastic compensation, the sub-board assembly precision is improved, through the collaborative design of a self-compensation contact array of the detachable storage sub-board and a heat dissipation strengthening layer (S200), the ultra-long plugging service life is achieved, and through the combination of three-dimensional microstructure heat dissipation and the phase change heat storage technology, the phase change heat storage performance is improved. The working temperature of the device is reduced, the thermal resistance value is reduced, the thermal management bottleneck of a high-density storage module is broken through, and a complete solution with high reliability, maintainability and cost effectiveness is provided for large-scale application of the LPCAMM technology in emerging markets such as cloud computing terminals and industrial Internet of Things equipment.

The invention discloses an efficient transformer heat dissipation device, relates to the technical field of transformer heat dissipation, and provides the following scheme that the efficient transformer heat dissipation device comprises a transformer body and further comprises air cooling mechanisms arranged on the two sides of the transformer body and used for conducting rapid air cooling on the transformer body; the liquid cooling mechanism is arranged on one side of the top of the transformer body and used for conducting liquid cooling on the transformer body, and one side of the liquid cooling mechanism is overlapped with the air cooling mechanism; and the liquid return cooling mechanism is arranged on one side of the transformer body. According to the invention, the air cooling mechanism and the liquid cooling mechanism are superposed and cooperated, so that the heat dissipation requirement of the high-capacity transformer can be quickly met, the liquid return cooling mechanism realizes closed-loop circulation of cooling liquid, frequent liquid supplement is avoided, the operation and maintenance cost is reduced, waste liquid discharge is reduced, and the environment-friendly requirement is met; the running state of equipment can be dynamically adjusted according to the real-time temperature of the transformer, the heat dissipation effect is guaranteed, energy consumption is reduced, and the service life of the equipment is prolonged.

The invention belongs to the technical field of fluid mixing heat exchange, and particularly relates to a low-flow-resistance jet spray type liquid cooling low-temperature gas supply device and application thereof. Comprising a gas diversion system and a liquid supply system; the gas diversion system comprises a pre-cooling pipeline and a hemispherical diversion structure arranged in the pre-cooling pipeline; the precooling pipeline comprises an air inlet and an air outlet; the liquid supply system is arranged around the gas inlet end of the pre-cooling pipeline, communicates with the pre-cooling pipeline through a nozzle system arranged in the circumferential direction and is used for spraying liquid nitrogen into the pre-cooling pipeline so as to cool gas to be cooled; the hemispherical flow guide structure is arranged at the air inlet end of the pre-cooling pipeline, and the spherical face side of the hemispherical flow guide structure faces the air inlet and is used for guiding sprayed liquid nitrogen. In the working process, the temperature uniformity and the total pressure recovery coefficient are high, and the temperature distortion rate is low.

The application discloses finned tube type phase change heat storage equipment, including heat storage shell, both ends of heat storage shell are provided with sealing end plate, two sealing end plates are arranged, the inside of heat storage shell between two sealing end plates is provided with partition layer, the middle of heat storage shell is provided with coaxial center flow pipe, the opposite ends of center flow pipe are sealed and penetrated through sealing end plate through sealing sleeve, the space between partition layer and center flow pipe is set as phase change heat storage cavity, the inside of partition layer and the outside of center flow pipe are provided with heat transfer fin, the application belongs to phase change heat storage technical field, the purpose of the application is to solve the problems of low heat storage efficiency and poor equipment stability in prior art, the technical effects are as follows: double flow makes phase change heat storage efficiency improved, double cavity phase change heat storage material is arranged in heat storage equipment, heat storage energy efficiency is high, fin strengthens phase change heat storage and structural support, equipment is stable, and has good sealing and plugging performance.

The invention discloses a heating assembly for a fused quartz furnace, and belongs to the technical field of heating, the heating assembly comprises a furnace body, a fixed seat is arranged on the bottom side in the furnace body, the heating assembly also comprises two hydraulic push rods which are distributed at the bottom of the fixed seat in a circumferential array, and the bottoms of the hydraulic push rods are fixedly connected with the inner wall of the furnace body. According to the invention, the heating block and the heat conduction block are inserted and mounted along the limiting sliding groove, the use positions of the limiting sliding block, the heating block and the heat conduction block are limited through the limiting sliding groove, and the furnace cover can limit and fix the top of the heating block, so that the hydraulic push rod drives the fixed seat to move upwards, and the heat conduction block enters the heating block; the use height between the heating block and the heat conduction block is adjusted to meet the heating requirements of different crucible heights, so that the different heating requirements of the equipment in the use process are guaranteed, a heat source is effectively focused, energy loss is reduced, and the applicability and the energy efficiency level of the equipment are remarkably improved.

The invention relates to a heat exchange technology, in particular to a tubular heat exchanger with fins capable of being turned over and expanded to be adjustable and an adjusting method thereof.The tubular heat exchanger comprises a heat exchanger shell, tube boxes installed at the two ends of the heat exchanger shell and tube plates arranged between the heat exchanger shell and the tube boxes, and a plurality of heat transfer tubes are installed in the heat exchanger shell; and an expansion fin structure is arranged on the heat transfer pipe. According to the tubular heat exchanger, dynamic adjustment of the heat exchange area is achieved through the reasonably-designed structural combination and connection relation of the expanded fin structure and the driving structure, the heat exchange efficiency and the equipment adaptability are remarkably improved, and specifically, the expanded fin structure enables the heat exchanger to meet the requirements of different working conditions according to the requirements of different working conditions. The heat exchange area is flexibly adjusted, the dynamic adjusting capacity not only improves the efficiency of the heat exchanger under different operation conditions, but also reduces energy waste caused by the fixed heat exchange area, and therefore higher energy utilization efficiency is achieved.

The invention relates to the technical field of geothermal energy utilization and underground heat exchange, in particular to a medium-deep layer buried pipe heat exchanger seepage thermal response rapid prediction method based on artificial intelligence, and the method comprises the steps: obtaining temperature field snapshot data of a medium-deep layer buried pipe heat exchanger system under different operation conditions; performing orthogonal decomposition on the temperature field snapshot data to obtain main modal characteristics and corresponding amplitudes; the parameters of all the operation conditions serve as input variables, all the main modal features and the corresponding amplitudes serve as output variables, a BP neural network is trained, and an artificial intelligence agent model is constructed; and obtaining parameters of a target operation condition, inputting the parameters into the artificial intelligence agent model, outputting the amplitude of each main mode under the target operation condition, reconstructing a temperature field, and completing rapid prediction of the seepage thermal response of the medium-deep layer buried pipe heat exchanger under the target operation condition. According to the method, the temperature field distribution of the DBHE system under the action of underground water seepage can be quickly predicted.

The invention belongs to the field of phase change heat storage, and discloses a phase change heat exchange fin parameter optimization method and a related device.According to the method, a three-dimensional parameterized model of a tree-shaped fractal fin containing the length ratio, the width fractal dimension and the fin number is established, representative parameter sample points are efficiently generated through Box-Behnken experimental design, and the representative parameter sample points are optimized; and a liquid phase rate and a total heat storage capacity response value are obtained by combining numerical simulation of phase change heat transfer, and multi-target parameter global optimization is realized based on a second-order polynomial regression model. By the adoption of the method, optimization efficiency and precision are remarkably improved, on the premise that a large number of repeated experiments or simulations are not needed, the optimal fin structure parameters capable of cooperatively strengthening heat conduction, promoting melting of the phase-change materials and maximizing the heat storage capacity are rapidly obtained, and a reliable design basis is provided for engineering application of the fractal fin strengthening phase-change heat storage technology.

The invention discloses a cross-temperature-zone heat storage steam supply system and a working method thereof, and belongs to the technical field of heat storage and supply. According to the system, a first inlet of a hot water storage tank is connected with an outlet of a circulating deoxidizing hot water generating unit, and a first outlet of the hot water storage tank is connected with one end of a pressure reducing throttle valve; an inlet of the molten salt hot storage tank is connected with an outlet of the molten salt cold storage tank, and an outlet of the molten salt hot storage tank is connected with a second inlet of the molten salt heat exchanger; the solid heat storage unit is connected with the solid heat storage electric heater, and an outlet of the solid heat storage unit is connected with a second inlet of the secondary overheating heater; the other end of the pressure reducing throttle valve is connected with a first inlet of the molten salt heat exchanger or the primary superheater, a first outlet of the molten salt heat exchanger or the primary superheater is connected with a first inlet of the secondary superheater, and a first outlet of the secondary superheater is connected with a steam pipe network. Hot water heat storage and vaporization can be integrated, and efficient heat supply in different temperature zones can be achieved.

The invention relates to the technical field of intelligent heat supply, and discloses a load prediction energy-saving regulation and control method for secondary network heat supply. Extreme weather is identified through the multi-source meteorological data, and graded early warning signals are generated; collecting and processing data flow of a heat supply pipe network and an indoor sensor; fusing the data flow and the early warning signal, and generating a thermal load prediction value subjected to physical constraint and dynamic compensation by adopting a hybrid prediction model; based on the early warning level and the predicted value, a multi-objective optimization problem is solved in a rolling mode through model prediction control, and a water supply temperature and water pump frequency setting curve is generated; and finally, after instruction smoothing and safety verification, an execution mechanism is driven to complete accurate regulation and control. According to the invention, by constructing a sensing, predicting, optimizing and executing full-link intelligent regulation and control system, the industrial problem that the rapid mutability of extreme weather is not matched with the slow dynamic response of the system is solved, and the regulation and control quality and the energy efficiency level of the heat supply system are remarkably improved.

The invention discloses a heat supply network source side renewable energy source regulation and control method and system, a medium and a product, and relates to the technical field of renewable energy source integration and heat supply. According to the method, the regulation and control system collects the real-time water return temperature of the primary side main water return pipe, the target water supply temperature of the primary side main water supply pipe and the outlet water temperature of the renewable energy source branch to determine the physical topological structure of the renewable energy source branch connected to the source side of the urban heat supply network, and correspondingly adjusts the valve opening degree of the multi-way valve set to be connected with the flow path. According to the self-adaptive heat supply network source side renewable energy source regulation and control method, the access mode of the renewable energy source on the urban heat supply network source side can be flexibly adjusted according to the output change of the renewable energy source, invalid circulation is avoided while the heat exchange effect is guaranteed, and therefore the utilization efficiency of the renewable energy source is improved.

The invention discloses a steam reheating system and a heating pipe network tail end medium temperature guaranteeing method, and particularly relates to the technical field of heat supply. A low-temperature steam pipe network; a hot water pipe network; the steam reheating system comprises a steam-steam heater and a steam-water heater which are arranged in parallel, and the steam-steam heater and the steam-water heater conduct heat exchange on low-temperature steam and hot water through high-temperature steam and low-temperature steam correspondingly. High-temperature steam waste heat and low-temperature steam waste heat are extracted from the tail end of a pipe network and used for heating low-temperature steam and heating hot water respectively, energy waste is avoided, the needed reheat steam flow is dynamically calculated based on the steam and water heat transfer and enthalpy value balance principle, the temperature is accurately controlled through an adjusting valve, and it is ensured that parameters of a user side reach the standard; and secondly, steam condensation water generated after heating is recycled to a hot water pipe network, circulation loss is supplemented, and water resource consumption and water production cost are reduced.

The invention belongs to the technical field of heat storage, and provides a paired metal hydride storage tank heat storage system and method for solar power generation. Wherein the paired metal hydride storage tank heat storage system is respectively communicated with the solar concentrating system and the electric power system through a heat exchange medium pipeline; the paired metal hydride storage tank heat storage system is configured in a multi-stage tandem mode, and at least two stages of heat storage systems are sequentially arranged in the flowing direction of heat exchange fluid in the heat output process. Under the operation requirement higher than the threshold load, all levels of heat storage systems are in an activated state, heat exchange fluid flows through each level of system according to a preset path, and heat released by each level of heat storage system is absorbed step by step; and under the condition that the load is lower than the threshold value for operation or the set working condition requirement, at least one stage of heat storage system bypass directly obtains the needed heat from other stages of heat storage systems.

The invention relates to the technical field of circulating heat dissipation, in particular to a circulating heat dissipation system for a distribution box, and the system comprises a simulation unit which is used for constructing a thermal field; the acquisition unit is used for acquiring data; a processing unit to process the data; the analysis unit is used for analyzing whether the heat dissipation system meets the standard or not, determining a reason for the condition that the heat dissipation system does not meet the standard, and generating a corresponding instruction according to the reason; the adjusting unit is used for adjusting corresponding parameters according to the instruction, and the parameters comprise operation parameters and judgment parameters of the device; comprising a first heat dissipation device, a circulating heat dissipation device and a second heat dissipation device. The heat dissipation efficiency of the distribution box is effectively improved.

The invention discloses a heat supply unit deep peak regulation and heat supply optimization operation method based on multi-mode collaboration, and particularly relates to the technical field of thermal power generation and heat supply, and the method comprises the steps of S1, system modeling and parameter identification, S2, thermoelectric load prediction, S3, multi-objective optimization solution, S4, operation decision and feedback, and S5, data agent mapping acceleration. According to the method, the thermoelectric load is accurately predicted through mechanism and data dual-drive modeling, and based on the target of maximizing the economic benefits of the whole plant, the optimal cooperation scheme of multiple operation modes such as heat supply, power supply and deep peak regulation is dynamically solved by utilizing the multi-target optimization algorithm on the premise of ensuring the safety of the unit, so that the power supply efficiency is improved. Finally, production is guided through an online decision-making and closed-loop feedback system, and safe, economical and flexible operation of the unit under the working condition of deep peak regulation is achieved.

The invention relates to the technical field of phase change heat storage, and provides an efficient phase change heat storage device based on inner pipe compound motion and a control method thereof.The efficient phase change heat storage device comprises an outer pipe, an inner pipe arranged in the outer pipe, an inner pipe translation mechanism and an inner pipe rotating mechanism which are arranged at the end of the inner pipe, and a phase change material filled between the inner pipe and the outer pipe; two rectangular fins are symmetrically arranged on the outer side of the inner pipe; the inner pipe translation mechanism is used for performing composite motion with the inner pipe rotating mechanism in the early stage of the heat storage process, driving the inner pipe to approach the bottom of the outer pipe in the later stage of the heat storage process, and driving the inner pipe to approach the top of the outer pipe in the heat release process; and the inner pipe rotating mechanism is used for performing composite motion with the inner pipe translation mechanism in the early stage of the heat storage process and driving the inner pipe to rotate to the position where the rectangular fins are kept in up-and-down arrangement in the later stage of the heat storage process and the heat release process. On the basis of achieving the maximum enhancement degree of the heat storage / release rate, the energy consumption caused by movement of the inner pipe is reduced.

The utility model provides an inverter, which relates to the technical field of heat radiation and comprises a shell, a cavity and an out-cavity flow channel which are communicated with each other are arranged in the shell, a radiator is arranged in the out-cavity flow channel and used for radiating heat of a power module in the cavity, a heat pipe heat exchanger is arranged in the shell and comprises at least one heat pipe, and the heat pipe is communicated with the cavity. The evaporation end of the heat pipe is arranged in the cavity, the condensation end of the heat pipe is arranged in the out-cavity flow channel, the heat pipe heat exchanger is used for transferring heat in the cavity to the out-cavity flow channel, and the out-cavity flow channel is communicated with the outside. The heat dissipation system not only directly dissipates heat of the power module through the radiator, but also effectively transmits heat in the cavity to the flow channel outside the cavity through the heat pipe heat exchanger via the heat pipe, thereby improving the temperature in the cavity, indirectly cooling the heating components of the inverter in the cavity, and improving the heat dissipation efficiency of the power module. Therefore, the risk of overheating damage of components in the cavity is greatly reduced, the overall service life of the inverter is prolonged, and the reliability of the system is improved.

The invention provides a control method and device for a multi-heat-source heat supply system. The control method and device can be applied to the technical field of intelligent heat supply. The method comprises the following steps: performing nonlinear conversion on initial prediction characteristics obtained by performing gating processing on respective characteristic sequences of meteorological information and previous load information of a building to obtain load prediction information of a heat supply system, and performing fusion processing on node information, branch pipe information and respective constraint conditions in previous operation information of a heat supply pipe network to obtain load prediction information of the heat supply system; water and heat distribution information of the heat supply pipe network is obtained; on the basis of the load prediction information, the hydrothermal distribution information and a target function, start-stop combination information and load distribution information of the multiple heat supply devices in the target time window are determined, and the target function is determined by energy cost information, load fluctuation information of the heat supply devices and start-stop times; and converting the start-stop combination information and the load distribution information into a control instruction and sending the control instruction to execution equipment so as to carry out heat supply control on the heat supply system.

The invention discloses a hydrothermal coupling dynamic simulation method and system for sudden supply and demand change of a long-distance heat supply pipe network, and belongs to the technical field of central heating, and the technical scheme is as follows: obtaining topological structure parameters, elevation, pipeline structure parameters, thermal insulation layer structure parameters and environmental parameters of the heat supply pipe network; constructing a node incidence matrix, and setting a heat source parameter, a physical property parameter, an abrupt change working condition parameter and a space step length; initial hydraulic calculation is conducted, and flow of all pipe sections and pressure distribution of all nodes of the heat supply pipe network are obtained; time-marching calculation is carried out on a temperature field in the pipe network when supply and demand loads suddenly change, heat supply medium physical property parameters and a pipe network hydraulic state are synchronously updated in the temperature field calculation process, and hydraulic and thermal coupling dynamic simulation is achieved; and on the basis of coupling dynamic simulation, the heat storage or heat release process of the heat supply pipe network under the supply and demand load sudden change working condition is analyzed. The dynamic simulation method and system for the supply and demand sudden change hydrothermal coupling of the long-distance heat supply pipe network have the beneficial effect that the dynamic simulation method and system for the supply and demand sudden change hydrothermal coupling are provided.

The invention relates to the technical field of heat exchange, in particular to a heat exchanger control method and device based on an intelligent feedback mechanism. According to the method, heat exchange characteristic data of a heat exchanger are collected in real time, and a multi-dimensional state tensor containing space-time correlation characteristics is constructed; performing tensor column decomposition on the multi-dimensional state tensor, and mapping an original high-dimensional space into a low-rank tensor chain structure; the real-time heat exchange working condition of the heat exchanger is evaluated based on the low-rank tensor chain structure, and a working condition evaluation result is obtained; if the working condition evaluation result is a first working condition recognition result, current working parameters of the heat exchanger are regulated and controlled; and if the working condition evaluation result is the second working condition recognition result, the current working parameters of the heat exchanger are kept unchanged. It can be ensured that the heat exchanger always operates in the thermodynamic optimal neighborhood, the energy efficiency ratio is comprehensively increased, and the equipment service life is comprehensively prolonged.

The invention provides a model selection method and device for a solid electric heat storage system and relates to the technical field of solid electric heat storage, and the method comprises the steps that parameters of the solid electric heat storage system, parameters of a heat supply pipe network and daily heat demand of a user side are obtained; determining the target pipe network heat storage amount according to the heat supply pipe network parameters; according to the target pipe network heat storage capacity and the heat supply pipe network parameters, the output heat capable of being output to the user side by the pipe network is determined; based on the daily heat demand, the output heat, the solid electric heat storage system parameters and the heat supply pipe network parameters, first target heat storage capacity is determined; and a model selection scheme of the solid electric heat storage system is determined based on the first target heat storage amount, and the model selection scheme of the solid electric heat storage system with stable heat storage and lower cost is obtained.

A computer information safety calculation processing water-cooling heat dissipation intelligent box belongs to the technical field of computer auxiliary heat dissipation and comprises a case and a water pump fixedly connected to the case, a water-cooling heat dissipation assembly is arranged on the case, and a temperature sensing assembly used for detecting ambient temperature is further fixedly connected to one side of the case. The temperature sensing assembly is internally provided with a regulation and control assembly used for controlling starting and stopping of the water-cooling heat dissipation assembly, and the water-cooling heat dissipation assembly comprises a plurality of sets of heat dissipation fins fixedly connected to the case and a water storage tank fixedly connected to the top of the case. According to the device, energy waste is avoided through intelligent regulation and control, when the equipment temperature is reduced to a certain degree and powerful heat dissipation is not needed, part of heat dissipation equipment can be automatically turned off, and the water pump is turned off until the temperature is completely reduced, so that the heat dissipation effect is guaranteed, energy consumption is reduced, and meanwhile, through arrangement of the cleaning assembly, the cleaning efficiency is improved. And the cooling fins can be cleaned, so that the maintenance cost is reduced, and the service life of equipment is prolonged.