Share

IIR document

Using Al2O3-water nanofluid to investigate the spray cooling heat transfer performance on a heated surface.

Number: pap. n. 63

Author(s) : CHANG T. B., LIN T. H., HUANG J. W., et al.

Summary

An experimental investigation is performed into the spray cooling heat transfer performance of Al2O3-water nanofluid given four different degrees of subcooling (0°C, 10°C, 20°C and 30°C) and four different spray operating times (10, 20, 30 and 40 hours). The results show that the heat transfer coefficient obtained using a subcooling degree of 20°C is around 8.3%, 8.6% and 15.6% higher than that obtained using subcooling degrees of 10°C, 0°C, and 30°C, respectively. The spray operating time has a negligible effect on the heat transfer performance for a low heat flux. For a high heat flux, the heat transfer coefficient decreases with an increasing spray operating time. The EDS analysis results show that the surfaces of the samples cooled for 10, 20, 30 and 40 hours, respectively, contain 20.58%, 35.51%, 40.08% and 53.25% Al. The SEM images confirm that the thickness of the deposited layer increases with an increasing spray operating time and leads to a lower heat transfer performance as a result.

Available documents

Format PDF

Pages: 6

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Using Al2O3-water nanofluid to investigate the spray cooling heat transfer performance on a heated surface.
  • Record ID : 30025953
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0063

Links


See other articles from the proceedings (632)
See the conference proceedings

Indexing