Newtonian Fluid Flow and Heat Transfer Analysis of Square Wings Multiple Twisted Tape With Solid Rings Heat Exchanger Tube

Abstract

Heat exchangers tubes are devices usually applied in numerous equipment in order to enhance the performance of equipment in terms of heat transfer rate. These heat exchangers can function in cooling as well as in heating process of the working fluid flowing in various systems and processes. The classic example of a heat exchanger is found in an internal combustion engine in which circulating fluid known as engine coolant flows through the radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device in fluid medium, often in the form of air or a liquid coolant. There are three primary classifications of heat exchangers according to their flow arrangement. In counter-flow heat exchangers the fluids enter the exchanger from opposite ends. The counter current design is the most proficient; it can transfer the most heat from the heat transfer medium per unit mass due to the fact that the average temperature difference along any unit length is higher.