A Review of Recent Passive Heat Transfer Enhancement Methods
Seyed Soheil Mousavi Ajarostaghi,
Mohammad Zaboli,
Hossein Javadi,
Borja Badenes,
Javier F. Urchueguia
Affiliations
Seyed Soheil Mousavi Ajarostaghi
Department of Energy Conversion, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol 47148-71167, Iran
Mohammad Zaboli
Department of Thermal, Fluids, and Energy Conversion, Faculty of Mechanical Engineering, Semnan University, Semnan 35131-19111, Iran
Hossein Javadi
Information and Communication Technologies versus Climate Change (ICTvsCC), Institute of Information and Communication Technologies (ITACA), Universitat Politècnica de València (UPV), Camino de Vera S/N, 46022 Valencia, Spain
Borja Badenes
Information and Communication Technologies versus Climate Change (ICTvsCC), Institute of Information and Communication Technologies (ITACA), Universitat Politècnica de València (UPV), Camino de Vera S/N, 46022 Valencia, Spain
Javier F. Urchueguia
Information and Communication Technologies versus Climate Change (ICTvsCC), Institute of Information and Communication Technologies (ITACA), Universitat Politècnica de València (UPV), Camino de Vera S/N, 46022 Valencia, Spain
Improvements in miniaturization and boosting the thermal performance of energy conservation systems call for innovative techniques to enhance heat transfer. Heat transfer enhancement methods have attracted a great deal of attention in the industrial sector due to their ability to provide energy savings, encourage the proper use of energy sources, and increase the economic efficiency of thermal systems. These methods are categorized into active, passive, and compound techniques. This article reviews recent passive heat transfer enhancement techniques, since they are reliable, cost-effective, and they do not require any extra power to promote the energy conversion systems’ thermal efficiency when compared to the active methods. In the passive approaches, various components are applied to the heat transfer/working fluid flow path to improve the heat transfer rate. The passive heat transfer enhancement methods studied in this article include inserts (twisted tapes, conical strips, baffles, winglets), extended surfaces (fins), porous materials, coil/helical/spiral tubes, rough surfaces (corrugated/ribbed surfaces), and nanofluids (mono and hybrid nanofluids).
