9 results about "Thermal Problem" patented technology

The invention discloses a rapid design method and system for a turbine blade, electronic equipment and a storage medium, and the rapid design method comprises the steps: firstly, obtaining boundary conditions of a gas side and a cold air side of the turbine blade in an actual working environment based on flow heat exchange test data, and then constructing a heat exchange boundary model based on the boundary conditions; according to the method, temperature field calculation becomes a pure solid heat conduction problem, and only depends on known boundary conditions and material attributes, so that a heat exchange boundary model can be directly applied to a blade three-dimensional model for transient temperature field calculation, and CFD simulation calculation needing iterative solution is replaced; by means of the method, the most time-consuming flow field solving and flow thermal coupling iteration link in the whole analysis process is thoroughly eliminated, the calculation efficiency is remarkably improved while the calculation precision is guaranteed, a thermal-force coupling chain is cut off through decoupling calculation of the transient temperature field and the transient stress field, and the calculation efficiency is further improved.

This invention discloses a green and environmentally friendly method for improving the performance of substation facades, belonging to the field of facade performance optimization technology. The method includes: scanning the substation facade to obtain heat conduction-sensitive areas, constructing a facade thermal field and identifying thermal field distortion; constructing a layered thermal conductivity calculation model to calculate the thermal conductivity of facade materials within and outside the thermal field distortion domain in layers, and filtering out distortion deviation domains; extracting thermal bridge-sensitive domains, and determining whether the distortion deviation domains, heat conduction-sensitive areas, and thermal bridge-sensitive domains are spatially coupled by calculating the global Moran's index; if coupled, extracting the intersection as a spatial coupling domain, and formulating different facade performance optimization strategies for different material types within the spatial coupling domain; this invention can locate thermal problem areas, formulate targeted optimization strategies, improve facade thermal insulation performance, reduce energy consumption and carbon emissions, and achieve green and environmentally friendly goals.

The application provides an electro-thermal coupling calculation method considering geometric and material uncertainty, simultaneously considers material and geometric uncertainty, overcomes defects of traditional S-FDTD algorithms limited by time step and grid size, improves stability and simulation efficiency of an iterative method, and has obvious innovation. Moreover, geometric randomness and material randomness are simultaneously introduced into electro-thermal coupling calculation for the first time, so that a multi-physical simulation randomness problem in a multi-scale structure can be solved efficiently, and problems caused by the single randomness of material or geometry in the simulation of electro-thermal problems by traditional S-FDTD are solved.

This invention discloses an intelligent optimization layout and system for thermal resistance paths in multilayer printed circuit boards (PCBs), relating to the field of PCB design optimization technology. It performs a unified mapping of layer stacking parameters, regional thermal conductivity parameters, target heat source parameters, heat inlet parameters, through-connection parameters, inner layer diffusion parameters, and boundary condition parameters to construct a baseline thermal map and target heat source region. A hierarchical directed graph model is then established to identify dominant thermal resistance paths, secondary compensation paths, and obstruction segments. Candidate layout parameters are generated and filtered based on a set of constraint parameters. Furthermore, a single key parameter is selected to perform interval-shrinking refinement iterations, outputting the final layout parameters. This approach can converge board-level thermal problems into local path optimization problems, improving the specificity of thermal resistance identification, the interpretability of layout adjustments, and the stability of results.

This utility model relates to a finned heat dissipation device for spacecraft. The finned heat dissipation device includes a base plate and multiple fins. The base plate is used to connect to the spacecraft's heat source mounting surface. The base plate includes a base plate body, a first mounting surface and a second mounting surface respectively disposed at the top and bottom of the base plate body. The spacecraft's heat source mounting surface is connected to the second mounting surface. The multiple fins are used for heat dissipation and are arranged on the first mounting surface to form a fin array. The fins are three-dimensional fins. This utility model designs a finned heat dissipation device based on the external heat flow distribution of the spacecraft, expanding the heat dissipation area and improving the overall heat dissipation capacity of the spacecraft. It solves the heat dissipation problem of high-heat-consuming spacecraft and addresses the problem that traditional ground-based finned heat dissipation devices are not suitable for vacuum conditions. Under the condition of limited spacecraft heat dissipation surface, it expands the spacecraft's heat dissipation area, increasing the spacecraft's heat dissipation capacity by no less than 35%.

The application discloses a rapid design method and system of a turbine blade, an electronic device and a storage medium. The rapid design method is characterized in that: first, boundary conditions of a gas side and a cold gas side of the turbine blade under an actual working environment are respectively obtained based on flow heat exchange test data; then, a heat exchange boundary model is constructed based on the boundary conditions, so that temperature field calculation becomes a pure solid heat conduction problem, and only depends on known boundary conditions and material properties, so that the heat exchange boundary model can be directly applied to a three-dimensional model of the blade for transient temperature field calculation, replacing CFD simulation calculation which needs to be solved iteratively, and completely eliminating the most time-consuming flow field solving and flow-heat coupling iteration links in the whole analysis process, thereby ensuring calculation accuracy and significantly improving calculation efficiency. Moreover, through decoupling calculation of transient temperature field and transient stress field, the heat-force coupling chain is also cut off, further improving the calculation efficiency.

The invention discloses heat exchange equipment for treating an impurity-containing heat medium, and aims to solve the problem of heat exchange of hot sewage as well as the problem that an existing heat exchanger is easy to block and low in heat exchange efficiency. An automatic cleaning system composed of the ball serving water pump, the ball storage device and the like is arranged, cleaning can be started at any time during normal heat exchange of hot sewage, shutdown is not needed, for example, cleaning only needs about one hour after heat exchange by a certain chemical enterprise, production is not stopped, and yield loss is avoided. Meanwhile, the unique hexagonal supporting frame inside the heat exchanger enables a cold medium to flow to the outer wall of the tube bundle in a spiral line mode, the contact time is prolonged, the heat exchange efficiency is greatly improved, and enterprises can save a large amount of heat energy purchasing cost in cases. The heat exchangers can be flexibly connected in series or in parallel, operation is convenient, and the cleaning period is controllable. Through verification of multiple cases, the problem of heat exchange of hot sewage is effectively solved, and economic benefits and environmental protection benefits are achieved.

The invention discloses a ventilation and heat dissipation control method, device and equipment for a low-voltage chamber of a prefabricated substation. The method comprises the following steps: acquiring temperature related parameters of the low-voltage chamber of the prefabricated substation; based on the temperature difference between the indoor environment temperature and the outdoor environment temperature, the indoor and outdoor heat conduction amount is determined by combining the low-voltage chamber heat conduction coefficient; determining the total heat dissipation power according to the heat dissipation power of the heat source element and the indoor and outdoor heat conduction amount; according to the total heat dissipation power, the total air volume requirement is determined by combining the air thermodynamic characteristics; according to the indoor and outdoor pressure difference, the exhaust air rate of a single fan is determined by combining fan characteristics; the number of target fans is determined according to the total air volume requirement and the exhaust air volume of the single fan; according to the number of the target fans, the exhaust air rate of the single fan and the air inlet parameters, the air inlet area is determined; and based on the target fan number and the air inlet area, ventilation and heat dissipation control of the low-voltage chamber of the prefabricated substation is executed. According to the method, the problem of insufficient heat dissipation or excessive heat dissipation can be avoided, and the heat dissipation efficiency and energy efficiency are remarkably improved.

The invention discloses an environment-friendly substation facade performance improvement method, and relates to the technical field of facade performance optimization, and the method comprises the steps: scanning a substation facade, obtaining a heat conduction sensitive area, constructing a facade heat field, and recognizing the distortion of the heat field; constructing a heat conductivity coefficient hierarchical calculation model, performing hierarchical calculation on heat conductivity coefficients of vertical face materials inside and outside a thermal field distortion domain, and screening out a distortion deviation domain; extracting a heat bridge sensitive region, and judging whether the distortion deviation region, the heat conduction sensitive region and the heat bridge sensitive region are in spatial position coupling or not by calculating a global Moran index; if coupling, extracting an intersection as a space coupling domain, and formulating different facade performance optimization strategies according to different material types in the space coupling domain; according to the method, a thermotechnical problem area can be positioned, a targeted optimization strategy is formulated, the heat insulation performance of the outer facade is improved, energy consumption and carbon emission are reduced, and the green and environment-friendly target is achieved.