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Influence of lubricating oil on the evaporation of CO2 in microchannels.

De invloed van koelmachineolie op de verdamping van CO2 in microkanalen.

Author(s) : PRONK P.

Type of article: Article

Summary

The heat transfer coefficient of pure CO2 is high with respect to other refrigerants, whereby in combination with microchannels small heat exchangers could be applied. A study carried out at SINTEF Energy Research points out that small amounts of lubricant decrease the heat transfer coefficient by 40 to 70%. The possible causes of this phenomenon are changes in surface tension, roughness of the tube wall and conductivity.

Details

  • Original title: De invloed van koelmachineolie op de verdamping van CO2 in microkanalen.
  • Record ID : 2002-0593
  • Languages: Dutch
  • Source: Koude & Luchtbehandeling - vol. 94 - n. 3
  • Publication date: 2001/03
  • Document available for consultation in the library of the IIR headquarters only.

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