In a shell-and-tube heat exchanger (also known colloquially as a heat exchanger), two media separated by the tube wall are guided past each other. The heat of these media is exchanged with each other when there is a temperature difference between them.
A heat exchanger usually consists of three components, the pre-head, the shell casing and the tube bundle. One medium flows through the pipes, the second medium flows through the jacket space. Depending on the design, so-called baffles are inserted in the jacket space. The medium flowing in the jacket space is guided through these in such a way that it flows as transversely as possible to the bundle tubes. This increases the quality of the heat transfer. The better the heat transfer, the more compact the appliances.
In the case of shell-and-tube heat exchangers, both the tube space and the shell space can be designed with one or more paths. The decisive factors here are the speed and pressure loss of the flowing media. The number of paths has an influence on the length of the apparatus. The shell-and-tube heat exchanger can be used as a cooler and as a heater for liquid and gaseous media.
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