Experimental and Numerical Analysis of Cylindrical Pin Fins having V-Thread with and without Perforations by Natural and Forced Convection

Currently heat exchangers are used in almost all industrial fields. The heat exchanger design greatly affects the design of the entire system or process in which they are applied. Various factors influence the design of heat exchanger, major things are heat transfer rate, pumping power needs to run the heat exchanger and also heat exchanger size, weight, and production cost. The conduction losses are minimized by using higher thermal conductivity materials, radiation losses are less concern for heat exchangers operating under moderate temperature. Whereas the intensity of heat transfer by convection is the dominant challenge particularly on the gas side for the design of heat exchangers. From Newton’s law of cooling heat transfer rate mainly depends on Surface area and heat transfer co-efficient. Heat transfer co-efficient can’t be changed but it can changed due increasing surface area by altering original shape such as pin fins. The main aim of this study is to find out the most effective pin fin from V-threaded pin fins having with and without perforations in inline and staggered arrangement. Trials were conducted for varying Reynolds number and results were found out respectively for each pin fins.