29 results about "Heat mass transfer" patented technology

The invention discloses an opencast coal mine coal spontaneous combustion incubation period prediction method suitable for a negative temperature condition, and relates to the technical field of coal spontaneous combustion prediction. The method comprises the following steps: firstly, carrying out an oxygen adsorption dynamic experiment on a to-be-detected coal sample at a constant temperature of-20 to 100 DEG C to obtain a low-temperature oxygen adsorption rate constant and establishing a function relationship between the low-temperature oxygen adsorption rate constant and the temperature; secondly, calculating ice melting latent heat according to the ice content in the coal sample to be detected, and introducing the ice melting latent heat as a key energy loss item into the heat-mass transfer model of the coal pile; further, establishing a coal pile energy balance equation comprehensively considering oxidation heat release, ice melting latent heat consumption and a heat dissipation process; and finally, solving the equation through a numerical method, and calculating the time required by the coal pile from the initial negative temperature rise to the critical spontaneous combustion temperature so as to obtain the accurate coal spontaneous combustion latency. The method is particularly suitable for mines in cold regions, surface mines and winter coal storage yards.

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

The utility model relates to sludge drying equipment, and belongs to the technical field of environmental protection, the sludge drying equipment can realize multi-dimensional crushing of sludge blocks and remarkably improve the heat and mass transfer efficiency of materials in the drying process, and the comprehensive practicability is relatively good. The heat insulation shell is arranged outside the drying cylinder, and the heat insulation shell and the drying cylinder are fixedly welded; the driving motor is detachably mounted on the drying cylinder, and the output end of the driving motor extends into the drying cylinder through a through hole formed in the drying cylinder; the stirring lantern ring is fixedly welded to the interior of the drying cylinder, one end of the stirring shaft is rotationally connected with the stirring lantern ring, and the other end of the stirring shaft is fixedly connected with the output end of the driving motor; the multiple stirring blades are fixedly arranged outside the stirring shaft in a sleeving mode, and stirring tooth rakes are fixedly welded to the ends, away from the stirring shaft, of the stirring blades; the feeding port and the discharging port are correspondingly and fixedly installed at the two ends of the drying cylinder respectively.

The invention provides a method and device for killing spores, and belongs to the technical field of sterilization. According to the method, the spore suspension is inactivated, ultrasonic treatment and electrolysis are carried out at the same time, and the spore suspension contains sodium chloride. Ultrasonic treatment and electrolysis are carried out at the same time, ultrasonic waves can accelerate heat and mass transfer and ionization balance, generation of electrolyzed water is accelerated, meanwhile, the effective chlorine concentration of the electrolyzed water is remarkably improved, the ultrasonic waves generate physical damage to spore outer walls, inner membranes and the like, the spore outer walls are broken and fall off, and the spore inner membranes are damaged and dissolved, so that the spore concentration is improved. And the electrolyzed water can better permeate into the spores, and the electrolyzed water and the spores are synergistically treated to play a better role in inactivating the spores, so that the spores are quickly and efficiently killed, and meanwhile, the influence on the shelf life and the quality of fruits and vegetables is relatively small.

The invention belongs to the technical field of ship power and distributed energy, and particularly relates to a marine cogeneration system based on a compact reformer and an application method. The system comprises a combined heat and power supply module and a transcritical CO2 circulation module, the combined heat and power module converts chemical energy of gas fuel into electric energy and generates combustion tail gas. And the transcritical CO2 circulation module recovers and utilizes the waste heat of the combustion tail gas to generate power. Through deep coupling of the heat and power cogeneration module and the transcritical CO2 circulation module, the defects that in the prior art, a pre-reformer and a rear combustor are structurally separated, the system size is large, and the heat and mass transfer path is long are overcome, and the problems that in the prior art, the high-grade waste heat utilization rate is low, and the comprehensive energy efficiency of the system is not high are solved. And collaborative optimization of system miniaturization, multi-stage efficient utilization of energy and extremely low emission is realized.

The invention discloses a method and a system for optimizing a stirring flow field of a vinyl chloride polymerization reaction kettle, and relates to the technical field of vinyl chloride polymerization production optimization. Comprising the following steps: collecting physical attribute parameters of a reaction kettle structure, a stirring assembly and a medium, and inputting the parameters into a chloroethylene polymerization flow field CFD simulation platform; constructing a turbulence multiphase polymerization viscosity coupling model to associate viscosity and turbulence intensity, constructing a stirring flow field heat and mass transfer association model to describe stirring parameters and a heat and mass transfer rule, and introducing a multiphase flow interface tracking optimization algorithm to capture three-phase interface evolution; and collaboratively inputting the model and algorithm output data into a platform for multi-physics field coupling simulation, adjusting parameters for repeated simulation, and comparing flow field uniformity with heat and mass transfer efficiency data to determine optimal parameters. The system is matched with the method, and collaborative operation of parameter collection, model construction, simulation calculation and parameter optimization is achieved. The flow field simulation precision and the parameter optimization systematicness are improved, and the polymerization reaction stability and the product quality are guaranteed.

The invention relates to the technical field of drying, and discloses a metal waste residue double-layer drying device which comprises a cylindrical drying cylinder divided into an inner layer and an outer layer and a heat transfer module installed outside the drying cylinder, and the heat transfer module is arranged on one side of the material dry end of the drying cylinder and inputs heat into an inner cavity of the drying cylinder. According to the device, an efficient heat and mass transfer system is constructed through a synergistic mechanism of drying cylinder rotation-crushed material overturning and advancing-wall surface heat conduction, and the crushed materials are driven to continuously overturn and advance when the drying cylinder rotates, so that each part of the crushed materials can be in full contact with a heat conduction surface of the inner wall of the drying cylinder, and a heat transfer boundary layer between the crushed materials is beaten through dynamic overturning, so that the heat transfer efficiency of the crushed materials is improved. And meanwhile, heat source gas of the annular cavity continuously supplies energy to the heat conduction face of the inner wall, heat is efficiently conducted to the crushed aggregates which move forwards in an overturning mode through the wall face, it is ensured that the temperature of the crushed aggregates is stably higher than the evaporation temperature of liquid attached to the surface, the heat transfer efficiency can be greatly improved, and the metal waste residues can be evenly heated and dried in continuous movement.

The application relates to a high-salt wastewater crystallization method and device, and belongs to the technical field of wastewater treatment. In the method, hot flue gas or hot air is blown through the surface of fine-particle crystal seeds in a scattered state and covered with a water film, heat and mass transfer occurs between the hot flue gas or hot air and the surface of the fine-particle crystal seeds, the water on the surface of the fine-particle crystal seeds evaporates into the flue gas or air, the salt in the high-salt wastewater is crystallized on the surface of the fine-particle crystal seeds, the growing crystal seeds in a scattered state collide with each other or with the wall surface of a crystallizer in the movement, the surface crystals are stripped off, screened and discharged from the crystallizer; the flue gas or air carrying a small amount of fine-particle crystallized salt is discharged after dust removal; and the crystal seeds in a scattered state return to the crystallizer, are re-coated with a water film, evaporate and crystallize, and are recycled. The device has the advantages of strong heat and mass transfer process, large crystallization area, crystal seed strengthening in the crystallization process, and the like, can realize rapid evaporation and crystallization of wastewater by using low-temperature flue gas or air (less than 90 DEG C), and has small volume and weight, and low manufacturing and using costs.

The application belongs to the technical field of ship power and distributed energy, and particularly relates to a marine combined heat and power system based on a compact reformer and an application method. The system comprises a combined heat and power module and a transcritical CO2 cycle module. The combined heat and power module converts the chemical energy of gaseous fuel into electric energy and generates combustion tail gas. The transcritical CO2 cycle module recovers and utilizes the waste heat of the combustion tail gas to generate power. The application overcomes the defects of the separation of the pre-reformer and the after-burner structure, the large system volume and the long heat and mass transfer path in the prior art, solves the problems of low high-grade waste heat utilization rate and low system comprehensive energy efficiency in the prior art, and realizes the collaborative optimization of system miniaturization, multi-stage efficient energy utilization and extremely low emission.

The present application relates to the technical field of fusion device, and more particularly to a heat and mass transfer experiment platform of a gas baking system of a divertor. The technical scheme comprises a gas baking system, a vacuum system, a secondary side cooling system and a data acquisition and control system. The gas baking system comprises a Roots blower, the Roots blower is connected with a regenerator, the regenerator is connected with an electric heater and a cooler respectively; the vacuum system comprises a vacuum tank and a vacuum assembly installed on the vacuum tank, and the electric heater is connected with an experimental piece inside the vacuum tank. The present application can establish a heat and mass transfer model, help to understand the heat and mass transfer law, optimize the design and operation of the device, reveal the influence mechanism of the baking temperature, the working medium pressure and the flow rate, ensure the baking safety and stability, test the influence of different gas working media on the baking characteristics, test the vacuum leakage characteristics, find and solve problems in time, and ensure the high vacuum environment, reliability and stability of the fusion device.

This invention relates to the field of design simulation technology, specifically to a method for predicting the heat and mass transfer performance of a combined wet and dry cooling tower based on numerical simulation. The method includes the following steps: collecting structural parameters, operating parameters, and physical property parameters of the combined wet and dry cooling tower, and establishing a coupled numerical equation for energy balance. This invention obtains the current number of segments, calculates the variance of the segmented heat flux density values ​​based on the structural parameters and heat transfer values; dynamically adjusts the number of segments according to the variance of the segmented heat flux density values ​​to obtain the adjusted number of segments, and calculates the outlet temperature difference; then performs numerical iterative convergence based on the outlet temperature difference. By abandoning the traditional model of a fixed number of segments and dynamically adjusting the segments based on the real-time heat flux density distribution, the calculation accuracy is improved in areas with large heat flux fluctuations, and the calculation efficiency is improved in areas with small fluctuations, thereby improving the iterative convergence speed and prediction accuracy.

The invention provides a gill-type multi-stage distillation device with a 3D evaporator on the top surface, which is characterized by comprising an evaporation assembly, a plurality of condensation plates, a gill-type evaporation-condensation assembly and a dust-free paper assembly which are sequentially arranged from top to bottom, comprising a base plate, three-dimensional evaporation units and photo-thermal absorption layers, the multiple three-dimensional evaporation units are arranged on the upper surface of the base plate and used for increasing the light receiving area and the evaporation area of the base plate, and the photo-thermal absorption layers are arranged on the upper surfaces of the three-dimensional evaporation units and the upper surface of the base plate. The photo-thermal absorption layer is used for absorbing solar energy and converting the solar energy into heat energy; the evaporator supporting plate is connected with the base plate in a clamped mode and used for enabling the evaporation assembly and the gill type evaporation-condensation assembly to form a stable heat and mass transfer environment.

The invention discloses an internal hot air flowing speed control device during rape microwave processing, which comprises a box body and a connecting annular block, a quick dismounting mechanism for quickly dismounting a mounting box is arranged on the inner side of the box body, and a middle connecting ring is arranged on one side, far away from the box body, of the connecting annular block. The process from synchronous shielding to release of all the air inlet holes is achieved by combining a linkage adjusting structure of the shielding strips and the connecting strips, when the motor drives the moving block to drive one group of shielding strips to slide, the connecting strips can synchronously drive the multiple groups of shielding strips to move, and it is ensured that the shielding areas of all the air inlet holes are consistent; therefore, hot air enters the box body through the uniformly distributed air inlet holes, the phenomenon that the hot air at the edge is high in flow speed and the hot air at the center is low in flow speed is avoided, the design enables the oilseed rape placed on the rotating frame to be in uniform contact with the hot air, moisture evaporation rates of all areas of the oilseed rape are consistent, and heat and mass transfer balance of microwave heating and hot air dehumidification is effectively maintained.

This invention relates to the field of power cable technology, specifically to a phosphorus-nitrogen flame-retardant modified polyolefin sheathed power cable and its preparation method, comprising the following raw materials in parts by weight: 40-60 parts ethylene-vinyl acetate copolymer, 15-25 parts metallocene polyethylene, 80-140 parts composite flame retardant, 10-20 parts composite additive, 0.8-1.5 parts antioxidant, 1.5-2.5 parts lubricant, and 2-3.5 parts silicone masterbatch. In this invention, a synergistic flame-retardant system is constructed through the first and second additives of the composite additive. The first additive forms a dense char layer to block heat and mass transfer, while the second additive further enhances the flame-retardant effect and inhibits smoke generation. Combined with the pretreatment modification of metallocene polyethylene, it avoids the agglomeration of flame-retardant components and improves compatibility. Together with the composite additive, it synergistically inhibits flame spread, reduces smoke toxicity release, and improves the flame-retardant efficiency of the cable sheath.

This application discloses a method for the continuous preparation of ethephon, belonging to the field of ethephon preparation. The method includes the following steps: pre-dispersing bis(2-chloroethyl)-(2-chloroethyl)phosphonate, ethephon, and hydrogen chloride gas to obtain a gas-liquid dispersion with a dispersed phase size ≤1 mm; conveying the gas-liquid dispersion to a micro-packed bed reactor for reaction to obtain reaction products; and separating the reaction products to obtain a liquid-phase crude ethephon product. This application, by pre-introducing ethephon into the reaction feedstock system and enhancing the dispersibility of the feedstock system, can accelerate the heat and mass transfer process of the reaction system, significantly improve reaction efficiency, and avoid the generation of by-products. It features high feedstock conversion rate, high product purity, high product space-time yield, and short reaction time, enabling efficient, safe, and continuous production of ethephon with broad application prospects.

The invention provides a method for optimizing a fuel cell flow field plate structure based on thermal-mechanical-electric coupling characteristic analysis. The method comprises the following steps: S1, screening out candidate flow field structures with excellent electrochemical and thermal performance under an ideal condition without packaging force; s2, carrying out structural mechanical property analysis on the fuel cell to obtain runner geometry under a real working condition; s3, in combination with thermal-mechanical-electric comprehensive performance analysis of deformation, evaluating the influence of structural deformation on the comprehensive performance of the fuel cell; and S4, optimizing the flow field plate structure based on the coupling characteristics. The structure of the fuel cell flow field plate is optimized on the basis of mechanics, electrochemistry and hydrothermal distribution coupling characteristic analysis, and efficient heat and mass transfer and optimization design of a fuel cell bipolar plate flow channel are achieved.

This invention discloses a method and continuous production apparatus for polymerizing polyarylene ether nitrile from 2,6-dichlorobenzonitrile and mixed diphenols, belonging to the field of polymer material synthesis technology. The method includes: mixing 2,6-dichlorobenzonitrile with hydroquinone / bisphenol A at a molar ratio of (0.3~0.7):(0.7~0.3), followed by azeotropic dehydration and step-temperature polycondensation in an alkaline catalyst and organic solvent to obtain a polymer viscous liquid; diluting the viscous liquid and spraying it into a 50%~70% ethanol aqueous solution through a high-pressure nozzle to achieve pressurized spray precipitation; subjecting the precipitated solid to multi-stage hot water washing and continuous vacuum drying using a continuous belt filter to obtain the finished product; recovering the solvent from the mother liquor by distillation; and recycling the wastewater after ultrafiltration membrane treatment. This invention effectively balances the rigidity and solubility of the polymer by controlling the ratio of mixed monomers, and significantly improves the heat and mass transfer efficiency of the high-viscosity system by employing pressurized spray precipitation and continuous washing and drying processes, solving the industry pain points of traditional batch precipitation such as easy agglomeration, high solvent residue, and high water consumption.

The invention relates to the technical field of adsorption equipment, in particular to variable-diameter gas adsorption equipment, and aims at solving the technical problems that traditional adsorption equipment is low in adsorption efficiency, uneven in gas flow distribution and poor in heat exchange effect. The equipment comprises a shell, a variable-diameter adsorption bed, a gas flow guiding and dispersing structure and an integrated heat exchange structure, the variable-diameter adsorption bed structure is matched with the concentration gradient change in the gas adsorption process, and stable pushing force is provided in combination with the flow guiding and dispersing structure so as to achieve uniform distribution of gas flow; heat and mass transfer in the adsorption / desorption process is enhanced through an embedded heat exchange structure, and the adsorption capacity and the equipment operation stability are remarkably improved. The device is compact in structure, low in energy consumption and suitable for industrial tail gas treatment, gas purification and other scenes, and has wide application prospects.

This invention discloses an inclined falling film generator that enhances the heat and mass transfer of ammonia water through ultrasonic oscillation atomization coupling. The generator includes a housing containing several inclined falling film tubes. A downward-flowing falling film solution flows outside the tubes, while an upward-flowing heat source flows inside. The falling film solution is heated by the heat source, generating rising vapor that exits at the top of the generator. Multiple sets of ultrasonic atomizers and ultrasonic oscillators are spaced apart on the outside of each falling film tube. The high-frequency ultrasonic atomizers atomize the falling film solution into fine droplets, which exchange heat and mass with the rising vapor whose temperature decreases progressively along the falling film height, thus improving the purity of the generator outlet and reducing irreversible losses. The medium- and low-frequency ultrasonic oscillators enhance internal disturbances in the solution, strengthening heat and mass transfer. This invention effectively utilizes the stepped heat distribution of the rising vapor within the generator, improving the purity and quality of the generator outlet, enabling miniaturization of the generator equipment and improving system performance.

The utility model provides a reaction kettle for preparing a reactive brilliant blue dye with high thermal mass transfer, and relates to the technical field of reaction kettles. The reaction kettle for preparing the reactive brilliant blue dye with the high heat mass transfer comprises a partition plate, the upper surface of the partition plate is fixedly connected with a lifting frame, the inner surface of the lifting frame is fixedly connected with an outer partition cover, the outer circumferential surface of the outer partition cover is in through connection with a ventilation pipe, and the lower end of the outer partition cover is rotationally connected with a sealing ring. According to the reaction kettle for preparing the reactive brilliant blue dye with the high heat mass transfer, an auxiliary rotating frame is driven to rotate through the output end of a motor, so that a sealing ring is driven to rotate in the rotating process of the auxiliary rotating frame, and air entraining columns on the two sides are driven to rotate with the output end of the motor as the axis in the rotating process of the sealing ring; therefore, the flowing direction of hot air is guided through the grooves of the air entraining columns in the rotating process, the purpose of reducing heating dead zones of the mixing cylinder is achieved, and the problem that heating airflow is not guided to cause uneven heating is solved.

The invention discloses a spinning waste gas treatment device and method based on polyester filament yarn spinning production, and relates to the technical field of spinning waste gas treatment. The spinning waste gas treatment device based on polyester filament yarn spinning production comprises a shell and a fixing frame, a reheating assembly used for changing the thermodynamic equilibrium state and a switching assembly used for destroying a heat / mass transfer boundary layer on the surface of zeolite are arranged in the shell, and the reheating assembly comprises a reheating box fixed in the shell and used for heating the zeolite; carrying out secondary heating on the desorption gas; one end of the flow dividing pipe is communicated with the reheating box through a pressure valve, and the flow dividing pipe is used for conveying the desorption gas subjected to secondary heating; and the flow dividing box is communicated with the other end of the flow dividing pipe and is used for conveying the desorption gas subjected to secondary heating to the zeolite, changing the thermodynamic equilibrium state of the zeolite, increasing the heat / mass transfer driving force between the gas and the solid, breaking the heat / mass equilibrium state, exciting the kinetic energy of VOCs molecules and preventing the desorption efficiency from being reduced.

The invention provides a drying simulation method and system for a battery pole piece and a storage medium, and the method comprises the steps: S1, building a drying dynamic model of the battery pole piece, and setting a boundary condition and an initial value; s2, temperature and humidity data of a hot air inlet and a hot air outlet of the drying oven are measured, absolute humidity of an air inlet is obtained, and a pole piece-hot air coupling heat and mass transfer model is established based on energy conservation and mass conservation; and S3, the drying kinetic model and the heat and mass transfer model are combined, and a parameter sum is solved by using actually measured data Yair, test. The drying process of the battery pole piece is described in stages, a drying kinetic model is established, and in combination with a pole piece-hot air coupling heat and mass transfer model based on energy conservation and mass conservation, real-time tracking of the agent containing rate and the surface temperature of the pole piece is achieved, the drying process of the battery pole piece is optimized, and the manufacturing efficiency of the battery pole piece is improved.

The present application belongs to the technical field of salt wastewater evaporation treatment, and particularly relates to a solar salt-containing wastewater evaporation system based on dry-wet composite channels, which comprises a feed liquid tank, a regenerator and a dry-wet composite channel humidifier, the dry-wet composite channel humidifier comprises a plurality of composite channels, each of which comprises a dry channel and a wet channel, and a partition plate is arranged between the dry channel and the wet channel, and the partition plate is provided with a plurality of communication holes; the dry-wet composite channel humidifier is used to replace the conventional evaporator, the dry-wet composite channel is composed of the dry channel and the wet channel, the heat and mass transfer in the dew point evaporation process is balanced through the synergistic effect of the indirect heat exchange of the dry channel and the direct heat and mass transfer of the wet channel, the air temperature and enthalpy operating line in the dew point evaporation process is far away from the saturation curve, the heat and mass transfer difference in the dew point evaporation process is reduced, thereby the entropy increase is reduced, at the same time, the wet air temperature and enthalpy operating line in the regenerator tends to be a straight line, thereby the system entropy increase is further reduced, and the system thermal efficiency is improved.

This invention belongs to the field of polymer technology, specifically relating to a method, system, and device for calculating the porosity of a hydrogen-sensitive colorimetric detection gel. It aims to solve the problems of existing tape detection methods, such as limited detection range, reliability limited by tape thickness and adhesion, and susceptibility to missed detections; and the complex preparation and poor final product quality of hydrogels, where porosity cannot be accurately calculated. This invention includes: a set of heat and mass transfer equations characterizing hydrogen molecule diffusion in a hydrogel, expressed in dimensionless form; obtaining equations for hydrogen flow and diffusion migration in the hydrogel by combining boundary motion constraints; solving for the physical properties of the material and calculating the hydrogel porosity; and preparing the hydrogen-sensitive colorimetric detection gel based on the hydrogel porosity. This invention calculates the porosity of the hydrogel and controls porosity during preparation, achieving precise location detection of hydrogen leaks, reducing the likelihood of missed detections. The preparation process is simple, the gel is recyclable, and the cost is low and safety is high.

The invention relates to the technical field of bamboo wood drying, in particular to bamboo wood processing anti-cracking drying equipment which comprises a drying machine body, bearing plates symmetrically distributed along the drying machine body are fixedly connected to the top of the drying machine body, and a staged drying cavity body is fixedly connected between the symmetrically distributed bearing plates. Roll shafts which are symmetrically distributed along the bearing plates are rotationally connected between the symmetrically distributed bearing plates, and belts which are symmetrically distributed along the symmetrically distributed roll shafts are connected between the symmetrically distributed roll shafts. According to the invention, a partitioned dual-mode rolling driving mechanism is adopted, and passive friction of the fixed rail is combined with active stirring of the active conveying belt, so that automatic adaptation of the rotating speed of the bamboo sticks in the drying process is realized: the bamboo sticks roll at a low speed in the stages of preheating and slow drying and humidifying and cooling, and wet and soft bamboo wood is effectively prevented from deformation, cracking and stress concentration; high-speed rotation is achieved in the main drying stage, the heat and mass transfer efficiency is greatly improved, the drying period is shortened, and both the quality and the productivity are considered.

This invention discloses a method for calculating the minimum load of a building, enabling objective and accurate calculation of the building's theoretical minimum load to guide refined building design and regulation. The method starts by identifying the thermal environment requirements of the micro-spaces surrounding the human body, deriving the building's theoretical minimum load and its data acquisition system. Based on actual climate conditions, human comfort needs, and the building's actual operating mode, and according to the first principles of heat and mass transfer processes within the complex "climate-building-human" building environment system, this invention proposes a minimum energy calculation method to maintain the comfort needs of the local control body of the human body. The steps are clear and simple, enabling thermal environment regulation to be reduced from the entire space to the local control body, and from the entire time to the local control time, providing architects and engineers with a theoretical basis and reference target for the refined design and regulation of the indoor thermal environment.

The invention relates to the field of energy technologies and municipal heat supply, in particular to a closed steam-water loop of a molten salt energy storage system for municipal heat supply and a heat and mass transfer method. The steam-water loop module realizes indirect heat exchange through closed circulation; and the control module comprises a signal acquisition unit, a controller and an execution unit and is used for monitoring and adjusting. The heat and mass transfer method comprises the steps of heat storage, circulation starting, internal preheating, main heating, heat supply output and condensation backflow. According to the system, through the closed loop and cascade heat exchange design, low-conventional mature commercial fused salt and waste heat recovery are matched, the fused salt solidification risk is effectively avoided, it is guaranteed that the system operates reliably for a long time, the system is adaptive to the municipal heat supply low-temperature working condition, and efficient consumption of off-peak electric energy and stable transfer of heat energy are achieved. The method does not need to depend on special low-freezing-point fused salt, conventional mature commercial fused salt can be adopted, and stable and efficient application of the method in urban heat supply scenes is achieved.

The invention belongs to the technical field of clean energy storage and efficient utilization, and particularly relates to a BOG recovery system and method based on an LNG-ANG coupling condition. Through the LNG-ANG deep coupling technology, the heat and mass transfer coupling model containing the LNG variable physical property characteristics and the adsorption bed layer dynamic boundary characteristics is constructed, based on dynamic regulation and control of the model, the crossing of extensive cooling of LNG refrigerants to precise control of cold capacity on-demand supply is achieved, cold capacity waste or insufficient heat transfer is avoided, and the system energy consumption is remarkably reduced. A complete'monitoring-inversion-regulation 'closed-loop control strategy is established, the cycle service life of an adsorbent is remarkably prolonged, efficiency is introduced, energy grade matching is used as an optimization target, theoretical spanning from'energy conservation' to'balance 'is achieved, the system is made to operate under the thermodynamic optimal working condition, and efficient gradient utilization of energy is achieved.

This invention provides an internal component and method for enhancing the guided mass and heat transfer in a fixed bed. Through a biomimetic guided flow network formed by the main channel and branch channels, combined with active gas supply, the internal flow field of the fixed bed is actively regulated and uniformly distributed. The vertically arranged main channel, along with the asymmetrically distributed branch channels, effectively eliminates dead zones caused by fluid inertia within the bed. Multi-stage vents on the branch channels decompose the concentrated airflow into multiple micro-scale jets, forming a secondary flow field through airflow-wall interaction. This significantly enhances momentum exchange and heat transfer between the gas and solid interfaces, solving the problems of local turbulence, dead zones, low heat and mass transfer efficiency, and uneven temperature distribution in traditional fixed beds due to the lack of active guided flow and reliance on passive mass and heat transfer. This provides a reliable guarantee for continuous reaction under high temperature and high pressure conditions.