Twisted Tape Insert Effect on Heat Transfer Enhancement Placed in Smooth Tube: A Review

Abstract

Today heat exchangers are commonly used with twisted-tape inserts to improve convective heat transfer in various industries such as thermal power plants, chemical processing plants, air conditioning equipment, refrigerators, petrochemical, biomedical, and food processing plants. By using the twisted tape patch, the fluid flow swirls together, interrupting a thermal boundary layer on the surface of the pipeline. Heat exchanger thermal efficiency can be enhanced by heat transfer increase techniques. Tape insert is one of the techniques of passive heat transfer augmentation and used in the utmost application of heat transfer, for example, food processes for air conditioning and refrigeration systems. Thus, various techniques of enhancement were reviewed.