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Experimental study on the heat transfer and flow characteristics of nanorefrigerants inside a corrugated tube.

Author(s) : YANG D., SUN B., LI H., et al.

Type of article: Article, IJR article

Summary

The heat transfer and flow characteristics of MWCNT-R141b nanorefrigerant with different mass fractions have been studied through experiments. Experimental results were compared with existing correlations. A two-step method was used to prepare the nanorefrigerants. Span-80 was used as surfactant with an average particle diameter of 20 nm. Transmittance method was used to evaluate the stability of nanorefrigerants. Results showed that the stability of MWCNT-R141b nanorefrigerant, which is the added dispersant, was good during the experiments. The 0.3 wt% MWCNT-R141b nanorefrigerants had optimal heat transfer enhancement effects compared with pure refrigerants. The maximum Nusselt number increased by 40%. The specific pressure drop of nanorefrigerant increased as the Reynolds number (Re) increased, and the specific pressure drop of the pure refrigerant was minimum, which is similar to R141b.

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Pages: 213-223

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Details

  • Original title: Experimental study on the heat transfer and flow characteristics of nanorefrigerants inside a corrugated tube.
  • Record ID : 30014838
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 56
  • Publication date: 2015/08

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