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Enhancing heat transfer efficiency of a gas cooler in CO2 transcritical system through evaporative cooling on superhydrophilic fin surface

Number: 1178

Author(s) : DAS C., SINGHA P., DASGUPTA M. S., HAFNER A.

Summary

Gas coolers with improved heat rejection can save installation costs and boost the performance of CO2 transcritical systems. This work investigates superhydrophilic fin-based evaporative cooling to improve heat transfer efficiency. In this investigation, a fin tube heat exchanger is employed, featuring copper tubes and aluminium fins as gas cooler. The wettability of the aluminium fin surface is functionalized to facilitate the swift and thorough spreading of sprayed water droplets across its surface. This promotes a higher
evaporation rate than the conventional fin surface and a certain degree of subcooling may be achieved from rapid evaporative cooling. The cumulative impact of the latent heat transfer on the overall performance of the gas cooler within the CO2 transcritical system is found to be about 33%. This research serves as a valuable reference for the design and optimization of direct spray evaporative gas coolers featuring engineered fin surfaces.

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Pages: 10 p.

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Details

  • Original title: Enhancing heat transfer efficiency of a gas cooler in CO2 transcritical system through evaporative cooling on superhydrophilic fin surface
  • Record ID : 30032694
  • Languages: English
  • Subject: Technology
  • Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Publication date: 2024/08
  • DOI: http://dx.doi.org/10.18462/iir.gl2024.1178

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