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Study of enhancing heat and mass transfer of a tube-type indirect evaporative cooler.

Author(s) : HUANG X., XUAN Y., CHEN J., et al.

Summary

With possession of indirect evaporative cooler for study, how to develop and study the low-energy consumption and high effective indirect evaporative cooler is discussed. In this paper, the heat exchange performance of the indirect evaporative cooler has been carried out in a theoretical and experimental study, starting with: coating superabsorbent water fiber materials out of pipes and setting up a secondary water distribution grid; inserting spring wire etc. to strengthen heat and mass transfer. The study results showed: tube-type indirect evaporative cooler in tube coated with superabsorbent water fibers, efficiency gains of 5-8%; installing secondary water distribution grid, can improve cooling efficiency 5-10%; after spring wire inserted in the tube, 20-30% increase cooling efficiency. Only the primary airflow resistance in the pipe is increased by about 5-10%. Under the premise of ensuring the cooling efficiency, the use of tube-type indirect evaporative cooler compared plate indirect evaporative cooler, around 50 to 75% of the cost can be reduced. So, a conclusion can be drawn that the optimal design of reinforced tubular heat and mass transfer indirect evaporative cooler can overcome a lot of insufficient which plate indirect evaporative cooler has, example: easily plug flow, water distribution is uneven, wetting ability is bad, these impact cooling efficiency and higher unit volume and cost. So tube-type indirect evaporative cooler is the core equipment in cooling systems and has broad application prospects.

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Pages: ICR07-E1-319

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Details

  • Original title: Study of enhancing heat and mass transfer of a tube-type indirect evaporative cooler.
  • Record ID : 2007-2744
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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