Enhance Turbulence in Parallel Flow Heat Exchanger using Discrete Copper Wire Roughness: A Review

Heat Exchanger is widely used for increasing the heat transfer rate in many engineering application like refrigeration system, air conditioning system, power system, chemical rector, and many industrial and space aeronautical applications. For the effective performance and application of heat exchange, it is very essential to increase heat rate through it. So the interest of researchers has been directed toward for enhancing heat transfer rate and improve thermal hydraulic performance, by using different type of roughness techniques such as V- pattern rib, tapered twisted tape, micro channel, spiral coil shaped roughness. Some researchers were also focused on increasing turbulence 5000-20500 for enhancing heat rate using roughness inside or outside of tube or plates. In addition, researchers used a parameter for study with respect to the rib length ratio, rib pitch ratio, and rib inclination angle was conducted to optimize the geometric configuration of the ribs and improve heat enhancement. An extensive literature survey of research that this is a very dynamic essential area of research, and the main focus of present article seeks to provide comprehensive review of previous and recent research work published on enhancing heat transfer rate.