673 results about "Thermoelectric conversion" patented technology

The invention discloses a notebook computer waste heat recycling system and method based on a thermoelectric conversion effect, and relates to the technical field of thermoelectric materials and devices, and the system comprises a distributed thermoelectric array module which is composed of a plurality of miniature TEG units, is distributed in a high heating area of a notebook computer, and directly generates power through temperature difference; the self-adaptive heat management module comprises a heat-conducting silica gel layer and micro heat dissipation fins and is used for optimizing the temperature difference between the hot end and the cold end; the multi-stage electric energy management module comprises a rectifying circuit, a DC-DC boosting chip and a recycling energy storage battery device, converts the unstable low-voltage direct current output by the TEG into stable electric energy, stores the stable electric energy and supplies the stable electric energy to target equipment; and the intelligent control module dynamically adjusts the working area of the micro thermoelectric power generation unit according to the data of the temperature sensor, preferentially selects the position with the maximum temperature difference to generate power, and matches the power supply demand through a PMIC chip. Efficient conversion and utilization of waste heat are realized through innovative design, the problem of low thermoelectric conversion efficiency in miniaturized equipment is solved, and energy conservation and environmental protection are realized.

The invention relates to an ionic redox couple thermoelectric cement-based composite material, the composite material comprises a cement matrix and redox couples, and the redox couples exist in pores of the cement matrix; wherein the redox pairs are K4 [Fe (CN) 6] and K3 [Fe (CN) 6], and the porosity of the cement matrix is 25%-50%. According to the invention, the migration of ions in a cement matrix is regulated and controlled by introducing the redox couple, so that a relatively high Seebeck coefficient, conductivity and power factor are achieved while good mechanical properties are maintained, and the thermoelectric conversion efficiency is remarkably improved. Besides, the composite material can drive electrode reaction through temperature difference to generate a closed current loop, stable current output is achieved, and the problem of current output of a traditional ionic thermoelectric material is solved.

The invention discloses a thermal photovoltaic Brayton cycle power generation system for an aircraft and a control method. The aircraft comprises a combustion chamber and a cooling channel, the system comprises a fuel assembly, the fuel assembly comprises a fuel storage tank and a first diverter valve in pipeline connection with the fuel storage tank, an outlet pipeline of the first diverter valve is connected with a cooling pipeline, and an outlet pipeline of the cooling pipeline is connected to the combustion chamber; the thermophotovoltaic power generation assembly is arranged outside the cooling channel; the cooling pipeline is arranged in the cooling channel, and fuel in the cooling pipeline is used for cooling the cooling channel and the photovoltaic power generation assembly; and the Brayton cycle power generation assembly comprises a cooler, and the cooling pipeline is connected with a first inlet pipeline of the cooler. On the basis of Brayton cycle power generation, a thermal photovoltaic power generation system is coupled, so that the generating capacity can be increased while cooling of a cooling channel is ensured, and the thermoelectric conversion efficiency of the system is improved.

The invention provides a new energy automobile energy closed-loop system, method and product based on waste heat cascade recovery. The system comprises a waste heat cascade recovery subsystem for collecting multi-source waste heat of the new energy automobile and converting the multi-source waste heat into electric energy; the dynamic energy management subsystem is used for storing electric energy and determining a power-on path of the new energy automobile according to the state of the new energy automobile, and the state of the new energy automobile comprises the speed change rate of the new energy automobile, the charge state of the super capacitor bank and the charge state of the lithium battery pack; and the self-powered closed-loop control subsystem is used for monitoring the temperature of the battery module in the power-on process of the new energy automobile and calling electric energy to drive a heater when the temperature of the battery module is lower than a preset temperature threshold value so as to realize closed-loop temperature control. Therefore, the waste heat utilization rate of the new energy vehicle can be improved and the closed-loop management of the energy of the whole vehicle can be optimized by performing stepped recovery on the waste heat of the new energy vehicle and supplying power to the vehicle based on thermoelectric conversion.

The invention discloses a waste heat recovery system which comprises a heat exchange module, a control module, a thermoelectric conversion module, a pollutant recovery module, a pretreatment module and a carbon dioxide conversion module. The heat exchange unit comprises a heat exchanger and the like, a smoke inlet is connected with a boiler, and the heat exchanger recovers waste heat. The control unit is provided with a sensor group, a microprocessor and a controller, the sensor group comprises various sensors for detecting smoke related information, and the controller is provided with a self-adaptive learning module and a fault prediction subunit. The thermoelectric conversion module is connected with the heat exchange unit, and a heat dissipation structure is arranged in the thermoelectric conversion module. The carbon dioxide conversion module has a reactant supply unit. The heat exchange unit further comprises a heat storage subunit and the like. The device has the advantages that the heat exchange efficiency is improved through the heat exchange pipeline with the self-adaptive pipe diameter, the cost is reduced through the modular design, maintenance is convenient, the operation stability is improved through the controller function, and multi-stage energy utilization and carbon dioxide resource utilization are achieved through the thermoelectric conversion and carbon dioxide conversion module.

The invention provides a thermodynamic optimization method and device for a thermoelectric power generation module and a medium. Belongs to the field of thermoelectric power generation, and comprises the following steps: firstly, determining an optimization target to maximize power output or improve energy conversion efficiency, then establishing a thermodynamic model which comprises heat conduction, heat convection and thermoelectric conversion processes, and setting parameters. An improved ant colony algorithm is adopted, a self-adaptive optimization strategy capable of automatically adjusting and optimizing parameters is designed, and the algorithm introduces volatilization factors and adds random disturbance to optimize the search process. And finally, a multi-objective optimization algorithm is introduced to realize effective balance between the electric power and the thermoelectric conversion efficiency. Through the series of steps, the thermodynamic property of the thermoelectric power generation module can be effectively optimized, so that the power output and energy conversion efficiency of the thermoelectric power generation module are improved.

The invention discloses an N-type gel ionic thermal battery, a quasi-solid gel electrolyte and a preparation method of the quasi-solid gel electrolyte, and belongs to the technical field of thermal regeneration batteries. The preparation method comprises the following steps: fully soaking polyacrylamide hydrogel in an electrolyte containing [Cu (NH3) 2] < + > / [Cu (NH3) 4] < 2 + > redox couple to obtain the quasi-solid gel electrolyte. And preparing the N-type gel ionic thermal battery by using the quasi-solid gel electrolyte. According to the prepared N-type gel ion thermal battery, the thermoelectric conversion performance such as thermoelectric potential and output power is remarkably improved through the synergistic effect of solvated structure entropy change generated by the oxidation-reduction reaction of the copper ammonia complex reaction couple and the quasi-solid gel electrolyte. The problems that research and development of an existing N-type gel ion thermal battery focuses on physical performance regulation and control of a gel matrix, thermoelectric contribution of an oxidation-reduction reaction cannot be effectively enhanced, and improvement of the Seebeck coefficient and the power density is limited can be effectively solved.

The invention discloses a contact type thermoelectric device and a preparation process thereof, and belongs to the technical field of thermoelectric conversion device manufacturing. The contact type thermoelectric device mainly comprises a hot end part, a positioning compression piece, a thermoelectric material and a cold end part. The preparation process of the contact type thermoelectric device mainly comprises the steps of preparation of a hot end part, preparation of a thermoelectric material part, preparation of a cold end part, design and preparation of a positioning compression part, overall preparation of the contact type thermoelectric device and assembly of a thermoelectric power generation system containing the contact type thermoelectric device. According to the contact type thermoelectric device, the electrode of the device hot end part and the thermoelectric material are in pressure contact, welding flux is omitted, a traditional welding process is replaced, and the service temperature of the thermoelectric device is greatly increased. According to the preparation process of the contact type thermoelectric device, the thermoelectric device is prevented from being in the environments of overhigh welding temperature, non-uniform heating and the like for a long time in the preparation process, and the performance degradation of the thermoelectric material is reduced.

The invention relates to the technical field of respirators, and discloses a respirator flow dynamic adjusting system based on airflow sensing, which is characterized in that after starting, a multi-mode sensing module acquires spatial flow velocity distribution and dynamic characteristics of respiratory airflow, and generates a composite data flow fused with flow field information; the composite data flow is subjected to nonlinear analysis to generate a state vector representing breathing stability, and the state vector is used for identifying fluid abnormal risks; the state vector generates an optimized execution instruction set by the self-adaptive control engine in combination with the energy state of thermoelectric conversion; the execution instruction set drives the piezoelectric valve and the shear response humidifying layer to cooperatively adjust the flow and the humidity, and outputs physiologically matched breathing gas; fusion collection of spatial flow velocity distribution and dynamic characteristics of respiratory airflow is achieved through the multi-mode sensing module, the limitation of traditional single-point measurement is broken through, and the sensing precision is remarkably improved; a breathing chaos index is constructed through nonlinear kinetic analysis, and early warning of the breathing rhythm stability and the fluid abnormal risk is achieved.

The invention provides a moon thermoelectric conversion device with a replaceable heat storage body, and belongs to the technical field of moon energy and power generation. In order to solve the core problems of discontinuous energy supply, complex system maintenance and the like in the existing lunar base energy technology, the invention provides a lunar thermoelectric conversion device with a replaceable heat storage body. The heat collection layer of the internal coupling heat pipe and the heat storage material internally provided with the heat conduction copper columns form a cold source and a heat source, cold and heat sources in the moon day and the moon night are exchanged, and the continuous and stable power supply capacity of the moon day period is achieved. The device upper cover of the power generation part is in threaded connection with the device inner container of the heat storage part, modular disassembly and replacement can be achieved under the condition that the multi-stage thermoelectric generator fails, and replacement of the heat storage body can also be achieved. A copper column heat conduction mode is adopted in the vertical direction, the problem that gravity reverse heat transfer performance is poor is solved, and day and night uninterrupted supply of lunar base energy is expected to be achieved.

The invention relates to the technical field of hydrogen production, in particular to an all-weather hydrogen production device and a hydrogen production method.The hydrogen production device comprises a heat collection module, a heat storage and thermoelectric conversion module and a hydrogen production module; the heat storage and thermoelectric conversion module comprises a first heat storage assembly and a second heat storage assembly which have a temperature difference, and is used for providing electric energy for the water electrolysis hydrogen production module through a thermoelectric conversion effect; the hydrogen production module comprises a photocatalytic hydrogen production module and a water electrolysis hydrogen production module, a cathode in the photocatalytic hydrogen production module and a cathode of the water electrolysis hydrogen production module are the same cathode, and an anode in the photocatalytic hydrogen production module and an anode of the water electrolysis hydrogen production module are integrated in the same anode; the anode comprises a conductive electrode, and a photocatalytic hydrogen production anode catalyst and a water electrolysis hydrogen production anode catalyst which are respectively attached to two sides of the conductive electrode. According to the device, photocatalytic hydrogen production and water electrolysis hydrogen production are combined in the same set of device, the equipment integration degree is high, a plurality of assemblies are integrated and connected for use, the hydrogen production cost is low, and the efficiency is high.

The invention relates to the technical field of new energy automobiles, and provides a hydrogen fuel cell automobile thermoelectric-thermal management cooperative system and a new energy automobile, and the system comprises a hydrogen fuel electric pile, a main cooling loop and a secondary cooling loop connected in parallel with the hydrogen fuel electric pile. The hot end and the cold end of the thermoelectric conversion module are connected to the primary loop and the secondary loop respectively. A cab evaporator and an auxiliary evaporator are sequentially connected in series through a refrigerant loop of the vehicle-mounted air conditioning system, and the auxiliary evaporator is connected to the upstream of the cold end of the thermoelectric conversion module on the secondary loop in series. The controller controls the air conditioner to operate based on the passenger compartment refrigeration demand. When the air conditioner is started to cool the passenger compartment, the refrigerant flowing through the auxiliary evaporator can cool the secondary loop cooling liquid again, so that the temperature of the cold end of the thermoelectric conversion module is reduced, the power generation temperature difference is increased, the waste heat power generation efficiency is improved, and the overall heat dissipation capacity of the system is enhanced synchronously. According to the system, intelligent coupling and energy gradient utilization of air conditioner refrigeration, waste heat recovery and whole vehicle heat management are achieved.

The invention discloses a preparation method and application of a near-infrared carbonized polymer dot aggregate, and relates to the technical field of composite material preparation. Comprising the following steps: assembling carbonized polymer dots (CPDs) in a hydrogen bond acceptor solvent to obtain a CPDs aggregate; the CPDs are prepared from citric acid and benzoylurea. The specific implementation method of the application in the preparation of the photo-thermoelectric conversion equipment comprises the following steps: blending the CPDs aggregate with a polymer to carry out hybridization reaction to obtain a photo-thermal conversion module; the photo-thermal conversion module is loaded on a semiconductor device to form photo-thermoelectric conversion equipment. The preparation method of the CPDs aggregate is simple and efficient, the construction controllability of the aggregate is improved, and the CPDs aggregate has an efficient photo-thermal conversion effect and has a good application prospect in the aspect of photo-thermoelectric continuous energy transfer devices or photo-thermoelectric generators.

The present invention provides a molten salt storage tank and a molten salt electro-thermal long-duration energy storage device. This device can directly replace existing coal-fired and gas-fired industrial steam boilers, thereby promoting centralized gas supply and heating through molten salt heat storage in industrial parks; it can also directly provide centralized heating for residential areas. At the same time, when the molten salt electro-thermal long-duration energy storage device of the present invention is combined with a supercritical carbon dioxide power generation unit, a new type of efficient "electricity-thermal-electricity" technical mode is generated, which can replace existing pumped-storage power stations and chemical energy storage stations and become a large-capacity long-duration energy storage technology. The present invention has the advantages of compact structure, simple system, low heat storage cost, high heat release efficiency, small system heat loss, high electro-thermal and thermoelectric conversion efficiencies, can achieve modular, standardized, batch, and factory production, has safety, economy, and flexibility, and also has the characteristics of strong regulation ability, short construction period, low site selection requirements, and flexible construction scale.

The invention discloses a self-powered temperature control and dynamic thermal compensation system, and belongs to the technical field of energy recovery and intelligent thermal management, the self-powered temperature control and dynamic thermal compensation system comprises a vibration energy capture and power generation subsystem and a bidirectional thermal compensation subsystem, the vibration energy capture and power generation subsystem comprises a piezoelectric array, a thermoelectric module and an energy storage device; the piezoelectric array is used for capturing vibration energy and converting the vibration energy into first electric energy, the thermoelectric module is used for conducting thermoelectric conversion through the temperature difference between the interior and the exterior of an oil tank to generate second electric energy, and the first electric energy and the second electric energy are stored in the energy storage device. The bidirectional thermal compensation subsystem comprises a thermoelectric refrigeration sheet, the thermoelectric refrigeration sheet is used for consuming electric energy in a low-temperature environment to heat the oil liquid, refrigerating the oil liquid in a high-temperature environment and converting waste heat into third electric energy, and the third electric energy is stored in the energy storage device. Self power supply is achieved through vibration energy and temperature difference generated in the vehicle running process, and stable temperature control over the oil tank can be achieved in the extreme environment.

The invention discloses a method for determining the feed water flow of an evaporator of a nuclear power station and a related device, and relates to the technical field of thermoelectric conversion, and the method comprises the steps: obtaining the steam flow of an outlet of the evaporator, the secondary loop pressure of the evaporator, and the feed water temperature and nuclear power of an inlet of a main water supply pipe; the specific enthalpy coefficient is determined by looking up a table according to the secondary loop pressure of the evaporator and the feed water temperature, and the specific enthalpy coefficient is the ratio of the steam specific enthalpy to the feed water specific enthalpy; the nuclear power is converted into theoretical steam flow, the theoretical steam flow is used for verifying the steam flow of an evaporator outlet, and if verification passes, the steam flow of the evaporator outlet is used as one of the inputs of the feed water flow soft measurement model; and inputting the specific enthalpy coefficient, the steam flow at the outlet of the evaporator and the secondary loop pressure of the evaporator into a water flow soft measurement model to obtain the theoretical feed water flow. According to the method, high-precision dynamic measurement and calculation of the water supply flow of the evaporator are realized based on the water supply flow soft measurement model.

The invention discloses a TEC photo-thermal stable thermoelectric power generation device and a preparation method thereof, and relates to the technical field of thermal power generation, and the TEC photo-thermal stable thermoelectric power generation device comprises an energy capture module, a thermoelectric power generation module and a dual-mode heat dissipation module which are sequentially arranged from top to bottom; the energy capture module comprises a silicon substrate with a micro-cone array on the surface, a phase change energy storage buffer dielectric layer coated on the surface of the micro-cone array, and a silicon carbide film layer, a titanium nitride film layer and a titanium nitride nanoparticle layer which are sequentially arranged on the surface of the phase change energy storage buffer dielectric layer; the thermoelectric power generation module comprises a corrugated metal composite substrate and a plurality of thermoelectric units arranged on the surface of the metal composite substrate. The bottleneck that a traditional single material is insufficient in solar spectrum coverage is broken through, the solar energy utilization efficiency is greatly improved, excessive heat generated by sudden change of instantaneous illumination intensity can be effectively absorbed, and continuous and stable heat source input is provided for thermoelectric conversion.

The invention discloses a thermal insulation photovoltaic-thermoelectric coupling system for severe cold areas, which comprises a photovoltaic cell, a phase change container, a phase change material and a thermoelectric power generation sheet, and is characterized in that the phase change container filled with the phase change material and the thermoelectric power generation sheet are sequentially arranged below the photovoltaic cell; the bottom of the photovoltaic cell is connected with the upper side of the phase change container through heat-conducting glue, the lower side of the phase change container is connected with the thermoelectric power generation sheet through heat-conducting glue, phase change materials in the phase change container utilize and transfer heat generated by the photovoltaic cell in the whole process, the effect of keeping and slightly increasing the temperature of the photovoltaic panel is achieved, and meanwhile large heat flow input is provided for the hot end of the thermoelectric sheet. Effective utilization of solar energy is ensured through the two effects, and the conversion efficiency of the coupling system is improved. In addition, the cold ends of the thermoelectric pieces make contact with the external environment, waste heat is dissipated into the cold environment through convection and radiation heat dissipation, and thermoelectric conversion is maintained.

The invention discloses a test method and system for a thermoelectric power generation system, and relates to the field of thermoelectric power generation, and the system comprises a generation module which is used for generating an analog thermoelectric signal with adjustable amplitude, frequency and fluctuation characteristics according to preset thermoelectric conversion core parameters, so as to simulate thermoelectric input scenes under different working conditions; the adaptation module is used for receiving external wide power supply, carrying out voltage stabilization and transformation processing and outputting electric energy matched with the energy consumption of each electric device; according to the invention, analog signals with adjustable amplitude, frequency and fluctuation characteristics can be generated according to thermoelectric conversion core parameters, thermoelectric input scenes under different working conditions can be accurately reproduced, wide external power supply is adapted, electric energy matched with the energy consumption of electric equipment is output, dynamic parameter scheduling and synchronous adjustment are realized by analyzing a test instruction, and the test efficiency is improved. Output voltage, current and temperature difference distribution data are collected synchronously, quantized data associated with thermoelectric input and electric energy output are generated through noise reduction, error correction and feature extraction, and a reliable test report is output efficiently.

The invention belongs to the technical field of heat pipe reactors, and discloses a hexagonal annular heat pipe cooling reactor, which comprises a pipe wall of a heat pipe, a silk screen wick, a steam cavity structure of the heat pipe, uranium-molybdenum alloy fuel, an outer pipe wall of the heat pipe, a wick attached to the inner wall surface of the heat pipe, and uranium-molybdenum alloy. The device is formed by coupling a hexagonal annular heat pipe with a hexagonal fuel element. Firstly, in the aspect of the structure, a framework structure composed of graphite is not needed to fix the heat pipe and the fuel element, an assembly composed of the heat pipe and the fuel element can be directly adopted for expansion to form the fuel element, and gap thermal resistance brought by the framework is eliminated. In addition, in terms of heat transfer performance, the heat transfer performance of the hexagonal annular heat pipe is superior to that of a traditional cylindrical heat pipe. The same heat transfer area is adopted, and under the condition of the same heat transfer power, the temperature of the outer surface of the pipe wall of the hexagonal annular heat pipe is lower than that of a cylindrical heat pipe. Therefore, the material stress requirement in the heat pipe pile and the thermoelectric conversion form of the condensation section can be richer.

The invention relates to the technical field of thermoelectric conversion, solves the technical problems of bending strength, stretchability and the like of an existing flexible thermoelectric device, and particularly relates to a flexible thermoelectric unit based on a thermoelectric thick film, a thermoelectric device and a preparation method of the flexible thermoelectric unit. A group of thermoelectric channels are obtained by combining a thermoelectric thick film material and a slotted copper electrode, heating, welding and curing are performed to obtain a group of thermoelectric channels, a plurality of groups of thermoelectric channels are connected in parallel and inserted by using a connecting electrode to form a flexible thermoelectric unit with a three-dimensional framework, and the flexible thermoelectric unit is integrally placed into a pouring mold after connection and is packaged into a flexible thermoelectric device by a flexible packaging material. The temperature difference between the cold end and the hot end is easy to establish, and excellent bendability and reliability are achieved. Theoretical calculation shows that the flexible thermoelectric device has the stretch rate of about 51%, and the maximum output power under the temperature difference of 200K is 0.126 mW. Compared with an existing flexible thermoelectric device, the flexible thermoelectric device has the advantages of being simple in preparation method process, good in bending and stretching effect, low in cost and the like, and batch preparation can be achieved.

The invention discloses a photo-thermal coupling self-powered tracking driving system, relates to the technical field of photovoltaic power generation, and solves the problems of energy consumption waste and use limitation in the prior art. The thermoelectric conversion module generates power by utilizing the temperature difference between waste heat generated by the photovoltaic panel in an illumination working state and the environment, the photovoltaic panel and the thermoelectric conversion module are electrically connected with the hybrid energy storage unit, and the hybrid energy storage unit comprises a capacitor and a rechargeable battery which are connected in parallel; the energy management controller is electrically connected with the photovoltaic panel, the thermoelectric conversion module and the hybrid energy storage unit and used for collecting the environment illumination intensity, the electric quantity state of the battery and the terminal voltage of the capacitor and generating a control instruction based on collected signals, and the driving mechanism is connected with the energy management controller and used for driving the hybrid energy storage unit to work. And driving the photovoltaic panel to adjust the azimuth angle and / or the elevation angle in response to the control instruction so as to perform sun tracking motion. The use adaptability is improved, and energy waste is reduced.

This thermoelectric generation module comprises a first thermoelectric generation element and a second thermoelectric generation element adjacent to each other along a prescribed direction. The first thermoelectric generation element has: a first thermoelectric conversion layer including a first electron thermal excitation layer and a first electron transport layer that overlap each other in a stacking direction that intersects the prescribed direction; and a first electrolyte layer that overlaps the first thermoelectric conversion layer in the stacking direction. The first electron transport layer is flexible and has a first end section, a middle section, and a second end section arranged in order in the prescribed direction. In the stacking direction, each of the first electron thermal excitation layer and the first electrolyte layer overlaps the first end section, the second thermoelectric generation element overlaps the second end section, and each of the first end section and the middle section does not overlap the second thermoelectric generation element in the stacking direction.

The invention discloses an alarm system and method of a fire-fighting escape ladder, and relates to the technical field of communication alarm, the alarm system comprises an induction monitoring unit, a multi-source fusion unit, a communication control unit, a power supply control unit and a sound-light alarm unit, and the fire spreading edge is delimited and the fire behavior direction is predicted through multi-source data fusion. The fire emergency is judged to facilitate follow-up fire rescue, then the audible and visual alarm unit is used for fire-fighting escape guide indication, so that people in the escape ladder are guided to transfer orderly, the evacuation efficiency is improved, a distributed communication model is established through the communication control unit, and the channel quality is evaluated to dynamically adjust the communication mode. The anti-interference capability of wireless signals is enhanced, a thermoelectric conversion model is established through the power supply control unit to perform thermoelectric conversion, and then the signals are output to the power supply module to be stored for emergency power supply under the condition of power failure caused by high temperature of a fire disaster, so that the system reliability, the response speed and the personnel safety in a fire disaster scene are remarkably improved.

The invention relates to the technical field of carbon dioxide energy storage, in particular to a carbon sequestration coupled supercritical carbon dioxide energy storage method and system, which comprises the following steps of: installing a sensor network on carbon sequestration equipment, collecting key data of supercritical carbon dioxide, sending the key data to a central processing unit in real time, and performing data synchronization and preliminary analysis; and generating initial monitoring data. In the invention, by introducing hydrodynamic force simulation and multi-stage hydrodynamic force control, the energy storage efficiency and stability in the energy storage process of supercritical carbon dioxide are greatly improved, the pressure and temperature are dynamically adjusted to provide flexibility for the energy storage process, and higher energy density and conversion efficiency are realized; the system has remarkable advantages in the aspects of peak valley adjustment and power grid stability enhancement, the performance of the thermoelectric conversion material is optimized in real time, the energy recovery efficiency is effectively improved, energy can be efficiently stored in the carbon sequestration process, captured carbon dioxide is converted into a useful energy form, and environmental benefits and energy recovery are optimized.

The application belongs to the technical field of thermoelectric materials, and provides a preparation method of a beta-SrZrS3 thermoelectric conversion bulk material, which comprises the following steps: subjecting SrZrO3 powder to a sulfuration reaction to obtain beta-SrZrS3 powder; and subjecting the beta-SrZrS3 powder to rapid hot-press sintering to obtain the beta-SrZrS3 thermoelectric conversion bulk material. The preparation method has the advantages of low cost, simplicity and rapidness, can realize batch synthesis of SrZrS3 bulk materials, shorten the synthesis period, and obtain the beta-SrZrS3 thermoelectric conversion bulk material with pure phase, uniform composition distribution and high density. The raw material used is SrZrO3 powder which is inexpensive, non-toxic and does not require inert storage environment. The vacuum tube furnace and the rapid hot-press furnace are used, the sulfuration reaction and the hot-press sintering are used for preparation, and since the raw material, the preparation process and the target product meet the requirements of environmental friendliness, the preparation method can be directly extended to the development of the application of perovskite sulfide thermoelectric conversion, and provides a new way for the development of a new thermoelectric system.

The invention provides an engine pre-cooling and thermoelectric conversion method and system based on liquid metal, and the method comprises the steps: connecting a liquid metal pre-cooler, a thermoelectric hot end heat exchanger, a hot end liquid metal heat exchanger and a liquid metal driving device end to end to form a liquid metal loop, and connecting the liquid metal pre-cooler with a secondary pre-cooler in series; incoming flow air firstly passes through the liquid metal precooler to be cooled for the first time, the secondary precooler is used for deeply cooling the incoming flow air flowing through the liquid metal precooler, and liquid metal in the liquid metal precooler absorbs heat and then flows through the thermoelectric hot end heat exchanger to be further cooled; liquid metal flowing out of the thermoelectric hot-end heat exchanger enters the hot-end liquid metal heat exchanger, and the liquid metal flows through the hot-end liquid metal heat exchanger to exchange heat with the cold-end fuel heat exchanger. According to the technical scheme, the technical problems that in the prior art, a high-speed aircraft is insufficient in heat sink capacity, the cooling medium heat exchange capacity is poor, and continuous power supply of the aircraft is achieved are solved.

The invention belongs to the technical field of nuclear power, and particularly relates to an integrated thermoelectric conversion device testing device. According to the integrated thermoelectric device testing device provided by the invention, an inert gas and vacuum oxygen-free testing environment can be provided; and the test requirements of thermoelectric devices with the sizes of 100mm * 100mm and below are met. The controller controls the servo electric cylinder to apply pressure to the thermoelectric device, so that the stability of the internal resistance and thermal resistance of the tested thermoelectric device can be maintained, and meanwhile, the limit withstand pressure of the thermoelectric device can be tested; field vibration environments with various frequencies can be simulated through the vibration exciter; when the temperature of the hot end of the thermoelectric device reaches the temperature required by the test and the temperatures of the hot end and the cold end are constant, the resistance value of the programmable electronic load is changed through the controller, the voltage and the current of the programmable electronic load are read and recorded, and the conversion efficiency of the thermoelectric device is determined according to the recorded parameter values such as the voltage, the current, the temperature and the flow. The device is comprehensive in testing function and wide in application prospect.

The present invention provides a method for preparing a passive heat dissipation device for an integrated circuit chip, comprising: providing a substrate, forming adjacent P-type and N-type layers in the substrate, with the P-type layer located above the N-type layer; forming multiple isolation trenches in the substrate, each isolation trench extending through the P-type layer and into the N-type layer; depositing an isolation material on a first surface of the substrate to fill the isolation trenches, and performing a flattening process down to the surface of the P-type layer; forming a thermoelectric conversion layer on the surface of the P-type layer; forming a heat conductive layer on the surface of the thermoelectric conversion layer; and forming a ground pin connected to the N-type layer on a second surface of the substrate. This method can be used to prepare a passive heat dissipation device that achieves efficient heat dissipation without relying on external power supply, and can dissipate heat simultaneously in both thermal and electrical dimensions, resulting in a better heat dissipation effect than existing technologies. This method is highly compatible with existing semiconductor process technologies and easily achieves efficient chip-level heat dissipation.

The invention discloses an intelligent pipeline detection and maintenance method and system based on multi-source new energy supply, and the method comprises the following steps: collecting energy through a photovoltaic power generation module, a fluid energy recovery module and a temperature difference thermoelectric conversion module, and inputting the collected energy into an energy storage device; the intelligent energy management system monitors the power generation states of the photovoltaic power generation module, the fluid energy recovery module and the temperature difference thermoelectric conversion module in real time through sensor data of each module and a deep learning model, and predicts the power generation trend of each module; the charging states of the photovoltaic power generation module, the fluid energy recovery module and the temperature difference thermoelectric conversion module are monitored based on a first-order RC circuit model, and the charging states are predicted by using a Kalman filtering algorithm; according to maintenance tasks executed by the multi-degree-of-freedom mechanical arm, charging sorting is conducted on the multiple tasks based on a data fusion algorithm, and it is ensured that the multi-degree-of-freedom mechanical arm always has enough energy support in the task execution process.