The basic heat transfer element of a finned tube heat exchanger is the finned tube, which is composed of a base tube and fins. The base tube is typically a round tube, but can also be elliptical or flat. The finned tube heat exchanger is one of the successful discoveries in the process of improving tube-type heat exchangers. This method remains widely used among all heat transfer enhancement techniques for various tube-type heat exchangers. It is not only extensively applied in power, chemical, petrochemical, air conditioning, and refrigeration engineering for single finned tube heat exchangers but also serves as a widely utilized method for enhancing heat transfer in these applications.