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Performance enhancement of a flat tubular geometric design in indirect evaporative cooling systems.

Author(s) : ZHANG Y., HE C., XIAO Y., YANG C., CHEN Q., LUO X., CUI X.

Type of article: IJR article

Summary

Indirect evaporative cooling is an emerging energy-efficient air cooling technology characterized by its low energy consumption and low carbon footprint. Tubular indirect evaporative coolers serve as the commonly used air treatment devices. This study conducts a multi-objective performance comparison between two primary types of tubular indirect evaporative coolers, namely the conventional round tube design and the flat tube variant, under varying inlet air states and geometric parameters. The numerical models for each type of cooler have been established and validated to facilitate this investigation. The thermal performance of the coolers was comprehensively assessed using evaluation metrics such as temperature drop, wet-bulb efficiency, specific cooling capacity, and coefficient of performance (COP). The findings indicated that, on average, the flat tubular indirect evaporative cooler achieved a 6.2% greater dry-bulb temperature drop and a 16% higher wet-bulb efficiency in primary air compared to its round-tube counterpart when subjected to the pre-set operating conditions and the identical heat transfer areas. In addition, under equivalent geometric conditions, the flat tubular cooler demonstrated a 12% enhancement in COP while maintaining a robust specific cooling capacity. These results highlight the superior overall performance of the flat tubular indirect evaporative cooler, positioning it as a potentially efficient choice within the realm of indirect evaporative cooling technologies.

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Pages: 12 p.

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Details

  • Original title: Performance enhancement of a flat tubular geometric design in indirect evaporative cooling systems.
  • Record ID : 30035284
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 189
  • Publication date: 2026/09
  • DOI: http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2026.107024

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