Thermodynamic performance assessment of a novel air cooling cycle: Maisotsenko cycle Hakan Caliskan a,1,2 , Arif Hepbasli b, *, Ibrahim Dincer c , Valeriy Maisotsenko d a Department of Mechanical Engineering, Faculty of Engineering, Ege University, TR-35100, Izmir, Turkey b Department of Mechanical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia c Faculty of Engineering and Applied Science, University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada d Coolerado Inc., 4430 Glencoe Street, Denver, CO 80216, USA article info Article history: Received 29 October 2010 Received in revised form 9 January 2011 Accepted 2 February 2011 Available online xxx Keywords: Energy Exergy Cooling Air cooler Evaporative system Maisotsenko cycle abstract This study presents energy and exergy analyses and sustainability assessment of the novel evaporative air cooling system based on Maisotsenko cycle which allows the product fluid to be cooled in to a dew point temperature of the incoming air. In the energy analysis, Maisotsenko cycle’s wet-bulb and dew point effectiveness, COP and primary energy ratio rates are calculated. Exergy analysis of the system is then carried out for six reference temperatures ranging from 0  C to 23.88  C as the incoming air (surrounding) temperature. The specific flow exergy, exergy input, exergy output, exergy destruction, exergy loss, exergy efficiency, exergetic COP, primary exergy ratio and entropy generation rates are determined for various cases. Furthermore, sustainability assessment is obtained using sustainability index method. As a result, maximum exergy efficiency is found to be 19.14% for a reference temperature of 23.88  C where the optimum operation takes place. ª 2011 Elsevier Ltd and IIR. All rights reserved. Evaluation de la performance thermodynamique d’un nouveau cycle de refroidissement : le cycle de Maisotsenko Mots cle ´s : E ´ nergie ; Exergie ; Refroidissement ; Refroidisseur d’air ; Syste `me e ´ vaporatif ; Cycle de Maisotsenko * Corresponding author. Tel.: þ966 146 72 911; fax: þ966 145 72 636. E-mail addresses: hakan.caliskan@ege.edu.tr, hakanc85@gmail.com, hakan.caliskan@usak.edu.tr, Hakan.Caliskan@uoit.ca (H. Caliskan), ahepbasli.c@ksu.edu.sa, arifhepbasli@gmail.com (A. Hepbasli), ibrahim.dincer@uoit.ca (I. Dincer), vm@idalex.com (V. Maisotsenko). 1 On leave: Department of Mechanical Engineering, Faculty of Engineering, Usak University, TR-64200 Usak, Turkey. 2 Currently working as a Visiting Researcher at the Faculty of Engineering and Applied Science, University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada. www.iifiir.org available at www.sciencedirect.com journal homepage: www.elsevier.com/locate/ijrefrig international journal of refrigeration xxx (2011) 1 e11 Please cite this article in press as: Caliskan, H., et al., Thermodynamic performance assessment of a novel air cooling cycle: Maisotsenko cycle, International Journal of Refrigeration (2011), doi:10.1016/j.ijrefrig.2011.02.001 0140-7007/$ e see front matter ª 2011 Elsevier Ltd and IIR. All rights reserved. doi:10.1016/j.ijrefrig.2011.02.001