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Design and advantages of plate heat exchanger
Release time:
2020-08-25
In conclusion, through the comparison between shell and plate heat exchanger, the following conclusions can be drawn: plate heat exchanger is an ideal heat exchanger with high heat transfer efficiency, small size, light weight, convenient disassembly and assembly, and good coolant. According to the specific situation, it is recommended to select plate heat exchanger as the heat transfer equipment of the heat exchange equipment in the residential area.
Due to the attention paid by the state to environmental protection and energy, the extensive application of central heating system has greatly reduced the pollution of coal to the urban environment and saved energy. The heat exchanger is a very important heating equipment in the heating system, and has the "post war" switching and connection function in the heating and central heating projects. In the development of heat exchanger, plate heat exchanger plays a very important role. It is a typical heat exchange equipment, which is of great significance to the heat exchange station. Let's talk about the design and advantages of plate heat exchanger with you.
The characteristics of this equipment are more obvious than other heat exchangers, with the following advantages:
(1) Small temperature difference
Due to the high heat transfer coefficient and strong turbulence of the plate heat exchanger, the temperature difference of the secondary hot water after flow heat exchange in the heat exchanger is very small, sometimes close to 1~3 degrees. This can greatly improve the thermal efficiency and the economy of thermal replacement equipment.
(2) Low heat loss
Because the edge of the plate and the surrounding gasket are exposed to the atmosphere, the heat loss is very small, generally about 1%, so no thermal insulation measures are required. In the same heat exchange area, the heat exchange loss of plate heat exchanger is only that of tubular heat exchanger and its weight is less than half of that of shell-and-tube heat exchanger.
(3) Strong adaptability
On the one hand, in the heat exchanger assembly, according to the production and process requirements, it is easy to increase or reduce the heat guide plates, rearrange the plates, and re-select the process combination. On the other hand, adaptability is widely used according to different uses. It is currently widely used in various engineering fields such as chemical engineering, machinery, cement, petroleum, electric power, hot water heating, etc. Especially in the process of heating, cooling, evaporation, condensation, waste heat recovery and other processes, the application purpose is achieved through the heat exchange between the media.
(4) Flexible operation and convenient maintenance
Both the thermal guide plate and the movable pressure plate are hung on the main beam of the machine. There is a rolling device on the pressure plate. The equipment can be easily opened, cleaned, and a plate can be taken out for inspection or gasket replacement.
In conclusion, through the comparison between shell and plate heat exchanger, the following conclusions can be drawn: plate heat exchanger is an ideal heat exchanger with high heat transfer efficiency, small size, light weight, convenient disassembly and assembly, and good coolant. According to the specific situation, it is recommended to select plate heat exchanger as the heat transfer equipment of the heat exchange equipment in the residential area.
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