Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/44115
Title: Thermal performances comparison between dry-coil and wet-coil indirect evaporative cooler under the same configuration
Authors: Chen, Y
Yang, H 
Keywords: Comparison
Condensation
Dry-coil IEC
Efficiency
Simulation
Wet-coil IEC
Issue Date: 2015
Publisher: Elsevier
Source: Energy procedia, 2015, v. 75, p. 3162-3167 How to cite?
Journal: Energy procedia 
Abstract: The indirect evaporative cooling (IEC) is an energy efficiency and environmental friendly air-conditioning device which cools the air by water evaporation. In the market, there're two kinds of IEC units, namely dry-coil IEC and wet-coil IEC. The only differences between them lie in the sequence of air humidification process and heat exchange process. In dry-coil IEC, the two processes are separated. The working air firstly being humidified and then proceed sensible heat exchange with the fresh air; while in wet-coil IEC, the two processes are simultaneous. The different arrangement may result in distinction of thermal performance. The paper presents the analytical models for dry-coil IEC and wet-coil IEC and compares their supply air temperature and cooling efficiency under the same configuration. The condensation and non-condensation statuses for both IEC types were discussed by simulation under a wide range of fresh air inlet parameters. The results show that the wet-coil IEC owns a higher efficiency and can provide lower temperature supply air either in condensation or non-condensation statuses. Besides, the efficiency of both types of IEC will be lowered once condensation occurs.
Description: 7th International Conference on Applied Energy, ICAE 2015, 28-31 March 2015
URI: http://hdl.handle.net/10397/44115
ISSN: 1876-6102
DOI: 10.1016/j.egypro.2015.07.653
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