Therefore, when hanging heat transfer plate heat exchangers, special attention is paid to safety precautions. Let\u2019s take a look at the design precautions of lower plate heat exchangers~ 1. The thermal design of heat exchanger includes heat transfer calculation, flow resistance calculation and size determination.) and transportation requirements should be considered.\ufeffThe development of the industry is important, but safety cannot be ignored. Thermal design. According to the design goals, for the selected various heat exchanger forms and heat transfer surfaces, optimization analysis is carried out through different angles, and several options are provided. In addition to the technical performance indicators, the thermal design also needs the characteristics of the heat transfer surface (including heat transfer characteristics, flow resistance characteristics and structural parameters) and the thermophysical parameters of fluids and materials. (2) According to the working temperature, pressure and fluid properties, select the welding method and sealing material. 4., will affect the final decision. Structural design. The conditions for the decision are not yet qualitative, such as mold manufacturing conditions, transportation restrictions, and Delivery date and competition, etc. The optimization technology can be applied to the thermal design of heat exchangers.\u3000The mechanism design of the heat exchanger includes the following: (1) According to the maximum working temperature and maximum working pressure, as well as the thermal design and resistance calculation results, determine the materials and dimensions of each part to ensure the performance of the heat transfer dance during stable operation. 3. General layout . (5) Maintenance (including cleaning, repair and maintenance, etc. After the heat exchanger has completed the thermal design and structural design, the designer will then judge based on the evaluation, and finally make a decision based on various conditions. For some heat exchangers that work under special conditions, some have to calculate the thermal stress during the startup and shutdown periods, calculate the structural vibration caused by the fluid flow, or check the flow rate in order to reduce corrosion and structure.