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GOLDENSAIL
08
2022
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12
Advantages of plate and shell heat exchangers
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The plate and shell heat exchanger is a heat exchanger with a plate tube as the heat transfer element, also known as a sheet heat exchanger. It is mainly composed of two parts: plate tube bundle and shell. The contacts of the cold-formed pair of laths are tightly welded together to form a plate tube containing multiple flat runners.
The plate and shell heat exchanger is a structural form between the shell and tube heat exchanger and the plate heat exchanger, which takes into account the advantages of both:
①Using the plate as the heat transfer surface, the heat transfer efficiency is good. The heat transfer coefficient is about 2 times that of the shell and tube heat exchanger.
②Compact structure and small volume.
③Temperature resistance and compression resistance, the maximum working temperature can reach 800°C, and the maximum working pressure can reach 6.3 MPa.
④Fluid flows at high speed in the flat flow channel, and the plate surface is smooth, not easy to scale, the plate bundle can be disassembled, and it is easy to clean. However, the manufacturing process of this kind of heat exchanger is more complex than that of the shell-and-tube heat exchanger, and the amount of welding is large and the requirements are high, so its popularization and application are limited. Plate and shell heat exchangers are used in industrial sectors such as chemical, paper, pharmaceutical and food. Typical products are mainly used in food, medicine and other processing industries that require good heat transfer efficiency and short residence time.
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