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Performance evaluation and comparison of multistage indirect evaporative cooling systems in two operation modes
Author(s) -
Cui Xin,
Yang Xiaohu,
Kong Qiongxiang,
Meng Xiangzhao,
Jin Liwen
Publication year - 2019
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4803
Subject(s) - evaporative cooler , pressure drop , cooling capacity , tandem , water cooling , mode (computer interface) , process engineering , nuclear engineering , power consumption , engineering , automotive engineering , power (physics) , mechanical engineering , computer science , mechanics , thermodynamics , aerospace engineering , physics , operating system
Summary The evaporative cooling technique is an efficient approach for cooling application. This study aims to establish a performance evaluation method to advance the appropriate design for multistage indirect evaporative cooling systems. A mathematical formulation has been developed for the indirect evaporative cooler (IEC). After the validation, the mathematical model was used to analyze the evaluation criteria by considering the simultaneous influence of the cooling effectiveness, the pressure drop, and the cooling capacity of the multistage IEC operating in two modes. The Mode‐1 IEC is a conventional counterflow unit, while the Mode‐2 IEC employs a regenerative M‐cycle arrangement. The IECs are operated in a tandem arrangement. The multistage system is capable of improving the cooling performance and reducing the outlet air temperature. In addition, the multistage system displays a higher pressure drop resulting in a lager consumption of fan power. The analysis of performance evaluation criteria indicates that the appropriate maximum stage is suggested to be three‐stage and two‐stage for the Mode‐1 and the Mode‐2 IEC, respectively.