Recent advancement in heat transfer and fluid flow characteristics in cross flow heat exchangers. (October 2019)

• Record Type: Journal Article
• Authors: Mangrulkar, Chidanand K.; Dhoble, Ashwinkumar S.; Chamoli, Sunil; Gupta, Ashutosh; Gawande, Vipin B.
• Is Part Of: Renewable & sustainable energy reviews. Volume 113(2019)
• Publication Date: 2019-10
• Subjects: Cross-flow -- Heat transfer -- Friction factor -- Vortex generator -- Fins; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.rser.2019.06.027
• Languages: English
• ISSNs: 1364-0321

Abstract

Abstract: The cross-flow heat exchanger is a special type of heat exchanger involving the exchange of heat in the case of two fluids flowing in an orthogonal direction. The heat exchanger often comprises of a number of cylinders carrying hot fluid, along with the colder fluid flowing across/over the tubes or cylinders. The system also comprises of additional fins across the tube cross-section along with delta winglets so as to generate the additional turbulence for increasing the rate of heat transfer. The addition of vortex generators helps in promoting system miniaturization. Moreover, the implementation of the passive techniques in cross-flow heat exchangers significantly escalates the pumping power requirement. Thereby, the objective of this paper is to carry out a review on the recent developments and their potential candidature for improving the thermal performance of heat exchanger. The latest state-of-the-art developments are deeply discussed with its evaluating parameters and some recommendations are made for further investigation in this area. Highlights: The review of cross flow heat exchanger on passive mode is illustrated. The effect of different tube geometry on thermal performance is presented. The effect of different fin surface on heat transfer and pressure drop is shown. The effect of different vortex generators on thermal performance is discussed.