1637 results about "Heat losses" patented technology

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The invention relates to the technical field of powder bed heating, and discloses a powder bed heating method of additive manufacturing equipment, the powder bed heating method of the additive manufacturing equipment is realized based on a powder bed heating unit of the additive manufacturing equipment, and the powder bed heating unit of the additive manufacturing equipment comprises a handle bottom plate for providing a basic mounting platform for the whole device; a push-pull type local heating design is adopted for the device, a traditional overall preheating mode is replaced, energy consumption and the equipment use cost are greatly reduced, meanwhile, heat loss is reduced, the heating efficiency is improved, and through cooperation of double positioning and a real-time temperature control system, the energy-saving and environment-friendly effects are achieved. The accurate position of the heating unit is guaranteed through mechanical limiting and sensor detection, high-precision temperature control adjustment is matched, it is guaranteed that the temperature of the powder bed is stabilized within the preset range, part defects caused by temperature fluctuation are avoided, and the forming quality and the mechanical property stability of workpieces are remarkably improved.

The invention discloses an environment-adaptive label printing method, device and equipment and a medium, and relates to the field of label printing. According to the method, under standard printing parameters, reference color development energy and reference heat loss energy of a printing head are obtained; the current environment temperature and the current printing speed are obtained, and a temperature compensation coefficient and a speed compensation coefficient are calculated; calculating the initial heating energy of the printing head; obtaining printing data corresponding to the current printing task, determining a heat historical parameter of each heating point and heating time of an adjacent heating point of each heating point based on the printing data, and generating a proximity effect compensation factor; adjusting the initial heating energy based on the thermal historical parameter and the proximity effect compensation factor to obtain target heating energy; and according to the target heating energy, multi-stage dynamic compensation is carried out on the printing head, so that the actual output energy of the printing head is the target heating energy. By implementing the technical scheme provided by the invention, the printing effect is improved.

The utility model relates to the technical field of aerosol generation, in particular to a heating device and atomization equipment for an aerosol generation matrix, the heating device comprises a supporting assembly, a heating assembly and a reflecting part, the supporting assembly is provided with an air inlet, the heating assembly comprises a heat conduction part and a heating part, the heat conduction part is of a hollow structure with two open ends, and the reflecting part is arranged in the heat conduction part. The heating piece is arranged at the opening, away from the air inlet, of the heat conducting piece, a heating cavity is defined by the heating piece and the heat conducting piece, an airflow channel communicating the air inlet with the interior of the aerosol generating substrate is formed in the heating cavity, the heating piece is used for heating after being electrified, and the heat conducting piece is used for absorbing at least part of heat of the heating piece; the reflecting part is arranged on the outer side of the heat conduction part and used for reflecting heat radiated outwards by the heat conduction part and / or the heating part. Heat loss can be reduced, the heat utilization rate can be improved, power consumption of the power supply assembly can be reduced, heating efficiency can be improved, the aerosol generation speed can be increased, and a user is prevented from being scalded.

The dust hood comprises a cover body, a lifting device and a heat insulation part, the lifting device and the heat insulation part are arranged on the cover body, a suction cavity and a suction opening are formed in the cover body, the suction opening is formed in the suction cavity and used for being connected with a suction fan, the lifting device comprises a driver and a driving rod, and the driver drives the driving rod to reciprocate. The heat insulation piece is connected to the driving rod and comprises a top plate and a side plate, and the side plate is connected to the lower end of the top plate; when the dust removal cover is arranged on a furnace body of the medium-frequency induction melting furnace in a covering mode, the driving rod drives the heat insulation piece to abut against the end face of a furnace opening of the medium-frequency induction melting furnace, and the periphery of the cover body is arranged above the end face of the furnace opening of the medium-frequency induction melting furnace in a spaced mode. Therefore, heat of the smelting furnace and external low-temperature air can be isolated through the heat insulation piece, the effect of sucking smoke can be achieved, the heat of the smelting furnace can be prevented from being taken away by the low-temperature air, the heat loss of the smelting furnace is greatly reduced, and the smelting cost is reduced.

The invention discloses a thermal environment and air quality self-adjusting intelligent emergency rescue cabin and method, and relates to the technical field of emergency rescue. The core of the method is that firstly, heat loss characteristics of the rescue cabin are learned through a simulated environment, and a standard loss rate is established; then, a target temperature interval is set, and based on comparison between the temperature loss rate monitored in real time and a standard value, hierarchical temperature control modes such as dormancy, low-power-consumption maintenance or dynamic balance are dynamically selected. Furthermore, by integrating vital sign monitoring, the target temperature can be dynamically adjusted according to parameters such as the core body temperature, blood oxygen and blood pressure of a patient, medical intervention modes such as active cooling and shock rewarming are started, and safe rewarming is achieved in the shock rewarming mode in the mode that a core area is heated through directional radiation. The system is also internally provided with a multi-rule priority arbitration mechanism. The cabin body comprises a sensor, an air conditioner, vital sign monitoring equipment and a directional heating plate. Unification of energy conservation, temperature stabilization and precise medical intervention is achieved, and the intelligent level and the safety guarantee capacity of emergency rescue are remarkably improved.

The invention relates to the field of cracking, and discloses a direct electric heating cracking furnace, application and a method for preparing olefin through cracking, the cracking furnace comprises a preheating section, a cracking section and a post-treatment section, and the cracking section adopts a metal furnace tube with resistance gradually reduced in the material flowing direction; the metal furnace tube is directly connected with the electric heating component; the preheating section is used for preheating cracking raw materials and diluting steam; the cracking section is used for cracking the preheated cracking raw material in the presence of the preheated steam; and the post-treatment section is used for cooling and separating the cracking product. According to the direct electric heating cracking furnace disclosed by the invention, heat is directly generated from the heated metal furnace tube instead of being transmitted from the outside through heat radiation, so that the thermal efficiency is high, the heat loss is small, the heating speed is high, the cracking preparation of low-carbon olefin is facilitated, and each product has relatively high yield.

The invention relates to the technical field of bridge manufacturing, in particular to a bridge concrete pouring system and a control method thereof. According to the pouring system, the cold insulation device for controlling the temperature of the concrete and the material distribution device comprising the multiple pouring pipes for synchronous pouring are arranged, and the flow of the pouring point of each material distribution pipe is further accurately adjusted through the twin control platform. And the pouring flatness is ensured while the temperature of the poured concrete and the pouring uniformity are ensured. According to the scheme, from a mixing station to a pouring point, the cold insulation device wraps concrete all the time, heat loss and environment temperature influences in the transportation and waiting process are reduced to the maximum extent, through temporary storage and temperature control of the cold insulation device, the mold entering temperature can be effectively controlled, the risk of high-temperature exposure or low-temperature freezing is greatly reduced, and the production efficiency is improved. The problems that the initial setting time is shortened and the flowability is reduced due to temperature can be effectively avoided, and mass concrete temperature cracks are prevented.

The invention discloses a calcination and afterburning integrated coal gangue decarbonization device. The coal gangue decarbonization device comprises a shell, a multi-channel pulverized coal combustion gun and a secondary air heating combustor, an air reversing cavity, a combustion cavity and a calcination cavity which are sequentially communicated in the gas flowing direction are formed in the shell, the air reversing cavity is provided with a secondary combustion-supporting air inlet, the combustion cavity is provided with a primary air inlet and a tertiary combustion-supporting air inlet, and the calcination cavity is provided with a coal gangue feeding port. The multi-channel pulverized coal combustion gun is inserted into the primary air inlet, and the secondary air heating combustor is arranged close to the secondary combustion-supporting air inlet. The structure of the coal gangue calcining device is simplified, the problems of material cost, air leakage, heat loss and the like of external equipment and pipelines are reduced, and the construction and operation cost of the coal gangue calcining device is reduced. Meanwhile, through the hot air chamber furnace structure adapting to fine powder combustion and the high-temperature secondary air heating process design, the problems that the low-heating-value coal gangue is difficult to ignite and the heat value cannot be released are solved, and suspension calcination of the low-heating-value coal gangue is achieved.

The present application relates to a kind of gas sensor integrated by multistage composite structure, comprising: first support layer and second support layer, first support layer is configured as the insulation layer of heating composite and second assembly, at least part for reducing stress second support layer is arranged between third assembly and heating composite to reduce the heat loss of heating composite along the direction of third assembly, heating composite is in the way of partial entity embedding first support layer and second support layer by first support layer and second support layer are clamped, first support layer is provided with first compensation layer by at least one material in the form of single layer or multilayer composite on the side away from heating composite, second support layer is provided with second compensation layer by at least one material in the form of single layer or multilayer composite on the side away from heating composite, second compensation layer has several contact interfaces, the distribution density of contact interface gradually increases in the direction close to first assembly linearly or nonlinearly.

The application relates to the technical field of solar power generation, in particular to a combined cooling, heating and power (CCHP) system. A first heat storage circuit is used for collecting solar energy and storing the solar energy as low-temperature heat energy; a second heat storage circuit is coupled with the first heat storage circuit and is used for converting the low-temperature heat energy into high-temperature heat energy and storing the high-temperature heat energy; a user heat circuit is coupled with the first heat storage circuit and / or the second heat storage circuit and is used for transmitting a heat source to a user heat end; a user cold circuit is coupled with the first heat storage circuit and / or the second heat storage circuit and is used for generating a cold source and transmitting the cold source to a user cold end; and a power generation circuit is coupled with the second heat storage circuit and is used for converting the high-temperature heat energy into electric energy. Through the synergistic integration of multi-stage energy storage, hierarchical heat coupling and multi-end energy output, the application realizes efficient and full-grade cascade utilization of solar energy, significantly reduces heat loss, meets the multiple demands of users for power generation, heat supply and refrigeration, greatly improves the overall energy utilization efficiency of the system and avoids resource waste.

The invention relates to the technical field of life prediction, in particular to a high-voltage switch cabinet contact life management system based on digital twinning, which comprises a thermal behavior acquisition module, a conductive state construction module, a thermal loss dynamic evaluation module, a thermal disturbance response regulation and control module and a life mapping driving module. According to the method, temperature difference and time interval in an on-off period are collected, thermal stress change is calculated in combination with current density, thermal characteristics of materials are correlated, thermal behaviors of a contact are dynamically reflected, a conductive path boundary is reconstructed based on contact area and pressure offset, a through-flow state is accurately described, and heat accumulation and arc energy input are extracted. The method comprises the steps of analyzing a temperature trend under thermal diffusion lag, constructing a heat loss evolution curve, adjusting thermal conductivity distribution through a ratio of temperature rise to mass migration rate, improving local adaptability of thermal disturbance response, generating a life attenuation layer in combination with equivalent thermal mechanical load and fatigue tolerance, and enhancing dynamic nature and precision of evaluation. And accurate judgment and management of the degradation area are realized.

The invention discloses a divided water tank device for an internal heat exchanger of a split type solar water heater. Butt welding is carried out by utilizing an end enclosure of a stainless steel confined water bank inner bag; the end enclosure is used as the heat exchanger to play the role of a water tank partition board; the water tank is divided into independent divided cavities; the heat exchanger is sealed with the inner bag of the water tank; the adjacent cavity bodies communicate with each other via draught tubes; the medium circulation and the medium supplement, namely unconfined running of the heat exchanging part, are carried out safely and reliably via an upper circulating pipe and a heat collecting part; and the device can fully improve heat energy transformation and reduce heat loss.

A flow disrupter is configured for use in a valve. These configurations are well-suited for applications that subject the valve to extreme temperature gradients that can cause convective flow to develop in their elongate structure and, in turn, increase thermal heat loss and disrupt operator processes. The proposed design introduces obstacles into the elongate structure. These obstacles may create transient seals that inhibit convective flow. In one implementation, this feature may reduce heat loss because it creates localized, smaller circulation zones within the elongate structure.

The utility model discloses a pit type resistance furnace with a hot air circulation function, which relates to the technical field of heating equipment and comprises a furnace body and a furnace cover, a heating cavity is arranged in the furnace body, a ventilating duct is mounted in the heating cavity, a connecting disc is fixedly connected to the top of the ventilating duct, and a fan is arranged in the furnace cover. The top of the connecting disc is arranged at an air outlet in the edge of the bottom of the fan, a heat insulation material is jointly arranged between the inner side wall of the furnace body and the heating cavity, and heating devices are evenly installed on the inner side wall of the ventilation pipeline. According to the utility model, the heating devices are uniformly arranged on the inner side wall of the ventilation pipeline, and the spiral pipeline and the fan are arranged, so that each part of a heated object can be uniformly heated, the heating quality is improved, and the ceramic fiber heat insulation material is arranged between the inner side wall of the furnace body and the heating cavity, so that the loss of heat to the external environment is effectively reduced; the energy utilization efficiency is improved, the hot air circulation path is optimized through the arrangement of the spiral pipeline, and uniform regulation and control over the temperature in the furnace are better achieved.

The invention discloses a ship pipeline leakage detecting and positioning method based on an optimization algorithm, and belongs to the technical field of thermal power generating unit monitoring. In the ship pipeline leakage detecting and positioning method, various data acquisition modules are arranged, and an infrared thermal imager can also be used for measuring the temperature of a working medium pipeline of a ship pipeline and serves as a basis for judging whether heat preservation reaches a specified effect or not; the sealing position of the flange is prone to leakage, the thermal infrared imager can be used for monitoring heat preservation of the boiler shell so as to reduce heat dissipation loss, a high-temperature point on the outer wall of the boiler can be found, the high-temperature point indicates the failure position of the refractory layer, and therefore the situation that the process efficiency is reduced due to heat loss is avoided. The alarm module is arranged, when the information acquisition module monitors that the working medium of the ship pipeline leaks, the multiple alarm modules in the alarm module can send out broadcast voice through the broadcast voice alarm module to remind more workers to pay attention to maintenance, and the overall safety and reliability of the system are improved.