Publication Type : Conference Proceedings
Publisher : AIP Conference Proceedings
Source : 1st International Conference on Manufacturing, Material Science & Engineering (ICMMSE-2019) / AIP Conference Series, CMR Institute of Technology, Hyderabad (2019)
Url : https://aip.scitation.org/doi/10.1063/1.5141234
Campus : Bengaluru
School : School of Engineering
Department : Mechanical
Year : 2019
Abstract : A counter flow double pipe concentric tube heat exchanger is taken upon which vortex generators (winglets) are placed in order to improve the heat transfer characteristics. The material selected for the heat exchanger is aluminum with water as the working fluid. Two new designs have been implemented one comprising of the triangular or delta winglets and other of curved or circular arc winglets (with and without holes). There is an increase of 35% in the rate of heat transfer when longitudinal rectangular fins are arranged on the outer surface of the inner tube of the heat exchanger. Curved winglets without punched hole and with an angle of attack of 20° showed the highest heat transfer rate of 1398.43 W which is almost 55 % higher than the unfinned heat exchanger. Also it is been noticed that there are no significant changes in heat transfer rates in case of curved winglets with punched holes and triangular winglets, even though they gave better results compared to unfinned heat exchanger.
Cite this Research Publication : S. Chaturvedi and S. Bhanu Prakash, “Heat transfer enhancement using delta and circular winglets on a double pipe heat exchanger”, 1st International Conference on Manufacturing, Material Science & Engineering (ICMMSE-2019) / AIP Conference Series. CMR Institute of Technology, Hyderabad, 2019.