The energy and exergy analysis on the performance of counter-flow heat and mass exchanger for M-Cycle indirect evaporative cooling

Wang, Lei; Zhan, Chonghong; Zhang, Jianli; Zhao, Xudong

Abstract

© 2018 Serbian Society of Heat Transfer Engineers. The dew point Indirect Evaporative Cooling (IEC) achieved through Maisotsenko cycle (M-Cycle) is a complicated thermodynamic process. For further understanding of the heat and mass transfer occurred in a dew point indirect evaporative air cooler with M-Cycle counter-flow configuration, the paper presents a novel mathematical model that combined the law of energy conservation and the principle of the thermodynamic theory. The model was used to carry out the parametric study of the dew point air cooler under various inlet air temperature and relative humidity. Through the combined analysis of energy and exergy of the target IEC system, it is found that both the inlet air temperature and relative humidity have an important effect on the thermal performance and thermodynamic performance of the heat and mass exchanger. The high temperature environment helps to get better thermal performance and thermodynamic performance. It has been showed in this paper that the best thermal performance does not correspond to the best thermodynamic performance. Thus, the energy and exergy analysis should be implemented simultaneously for the optimization of the process to get the best thermal performance at permissible level of thermodynamic cost.

Citation

Wang, L., Zhan, C., Zhang, J., & Zhao, X. (2018). The energy and exergy analysis on the performance of counter-flow heat and mass exchanger for M-Cycle indirect evaporative cooling. Thermal science Society of Heat Transfer Engineers of Serbia and Montenegro, 2018, https://doi.org/10.2298/TSCI171221153W

• Journal Article Type: Article
• Acceptance Date: Jan 1, 2018
• Publication Date: Jan 1, 2018
• Deposit Date: Apr 2, 2019
• Publicly Available Date: Apr 5, 2019
• Journal: Thermal Science
• Print ISSN: 0354-9836
• Peer Reviewed: Peer Reviewed
• Volume: 2018
• DOI: https://doi.org/10.2298/TSCI171221153W
• Keywords: Indirect evaporative cooling; Heat and mass transfer; Energy; Exergy
• Public URL: https://hull-repository.worktribe.com/output/1170377
• Publisher URL: http://www.doiserbia.nb.rs/Article.aspx?ID=0354-98361800153W#.XKdgAJhKiUk