A Review on Heat Transfer Enhancement in Tube Heat Exchanger with Twisted Tape Inserts
摘要
The increasing need for energy necessitates the creation of efficient heat exchangers with lower manufacturing costs, greater heat transfer rates, a lower pressure drop, and simpler designs. The tube heat exchanger finds widespread application in several industries, and the heat transfer rate can be increased by a variety of methods, including the insertion of a turbulator, the extension of the fin, changing the tube’s geometry, using nanofluids, and combining these methods. In tube HE, twisted tape inserts are utilized to improve heat transfer efficiency. These twisted tapes are helically twisted strips of metal, plastic, or other materials placed inside of tubes in heat exchangers. They disrupt the fluid flow and induce turbulence, which leads to several benefits like increased turbulence, improved heat transfer coefficient, enhanced mixing, reduced fouling, and energy savings. The current work summarizes the numerical and experimental behavior of tube heat exchangers as well as thermal analyses of HE with different configurations of twisted tape and turbulent promoters. This paper also compiles several investigations demonstrating how changes in the geometry of twisted tape (TT) influence the performance of heat exchangers. Furthermore, this study utilizes correlations developed by previous researchers to evaluate and compare the thermal effectiveness of twisted tape configurations within heat exchangers. Researchers have investigated various twisted tape configurations, such as different twist ratios, diameter ratios, tape thickness ratios, and cut ratios, to determine their impact on heat transfer performance. These studies have provided insights into optimizing twisted tape designs for superior heat transfer enhancement.