Effect of Spiral Coil on Heat Transfer in Double Pipe Heat Exchanger- A Review

� Nowadays heat exchanger is the most effective mean to interchange thermal energy of one fluid to other. This is done by using miscellaneous techniques which improves heat transfer rate includes active, passive and compound augmentation techniques. In most of the mechanical process industries, heat exchanger is the principal device used for heat transfer phenomenon. The present article is about the review on research work has been done on various augmentation technique used to enhance the heat transfer rate in last decade. This paper contains literature estimation of heat transfer enhancement using spiral inserts. The present paper gives the theoretical as well as practical analysis of double pipe heat exchanger using spiral coil. This investigation is carried out to improve thermal performance of double pipe heat exchanger. The heat exchanger includes two copper pipes of diameter 25.4 mm and 50.8 mm with spiral coil of 4 mm diameter. In this experiment, water used as a working fluid in which hot fluid inlet temperature extend from 50oC to 80oC and cold fluid inlet temperature is kept at 30oC.This testing carry through hot water and cold water mass flow rate vary from .The theoretical analysis of project work has been accomplished with the use of Ansys software, which helps in CFD analysis.