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A particles aggregation model for predicting the thermal conductivity of nanorefrigerants.

Author(s) : JIANG W., DING G. L., GAO Y. F., et al.

Summary

A new type of refrigerants with suspending nanoparticles in conventional refrigerants, called nanorefrigerants, can have much higher thermal conductivity than normally used refrigerants. Nanoparticles suspended in the refrigerants may collide with each other so that particle aggregation may occur and nanoparticle clusters will form. In order to calculate the thermal conductivity of the nanorefrigerants, the three-dimensional space structures of the nanoparticle clusters in the refrigerant are simulated, and then the thermal conductivity of the cluster is calculated by the resistance network method. The thermal conductivity of the nanorefrigerants is calculated based on the simulated thermal conductivity of nanoparticle clusters, the volume ratio of nanoparticle clusters to the nanorefrigerants as well as the liquid molecule adsorption layer of the nanoparticle. The simulation method is validated by experimental data.

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Pages: ICR07-B1-329

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Details

  • Original title: A particles aggregation model for predicting the thermal conductivity of nanorefrigerants.
  • Record ID : 2008-0071
  • 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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