A finned tube heat exchanger is a heat exchanger rolled from smooth tubes. Its structural feature is that a series of spiral annular T-shaped tunnels are formed on the outer surface of the pipeline. For heat exchange processes where the composition is air or some other gas, the rate of heat transfer will be much lower, so the surface area required for heat transfer must be greater. This is where finned tube heat exchangers are typically used.
The finned tube heat exchanger has fins on the outside of the tubes, the liquid flows inside the tubes, and air or other gases flow outside the tubes. This is necessary because the large surface area of the finned tubes speeds up the heat transfer process.
Air heat exchangers such as condensers in air conditioning units usually use finned tube heat exchangers. One of the types of everyday tools used is also the car radiator. The purpose of finned tubes in car radiators is to cool the hot liquid inside the tubes with the air passing through the heat exchanger so that your car doesn't overheat or overheat.
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