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Use of nanoparticles, n-TiO2(R), to make hydrofluorocarbon refrigerants more compatible with mineral oil lubricants.

Author(s) : WANG R. X., WU Y. Z., XIE G. Z.

Summary

Hydrofluorocarbon (HFC) refrigerants do not dissolve well in mineral oils. Nanoparticles can be used to improve the solubility of an HFC refrigerant and mineral lubricant. In the paper, a new refrigeration lubricant applied in the refrigerating system that uses HFC-134a as refrigerant is formed by blending some r-type TiO2 nanoparticles, n-TiO2(r), into mineral oil VG32. The solubility of HFC-134a and the new refrigeration lubricant was investigated. The saturated pressure of HFC-134a and new refrigeration oil is tested. The stability of the nanoparticles n-TiO2(r) in mineral oil VG32 is also tested and discussed. The experimental methods are described. The researching results show that n-TiO2(r) can improve the solubility of HFC-134a with mineral oil VG32, and the new lubricant is steady enough for a refrigerating system. It is possible that the polyolester oil for a refrigerating system with HFC refrigerants can be replaced with the new mineral lubricant that is mixture of nanoparticles n-TiO2(r) with mineral oil.

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Pages: 2006-1

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Details

  • Original title: Use of nanoparticles, n-TiO2(R), to make hydrofluorocarbon refrigerants more compatible with mineral oil lubricants.
  • Record ID : 2007-0630
  • Languages: English
  • Subject: HFCs alternatives
  • Source: Innovative Equipment and Systems for Comfort and Food Preservation.
  • Publication date: 2006/02/16

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