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Evaluation of properties on paraffin oil-in-water emulsion as phase change slurry.

Author(s) : HUANG L., POLLERBERG C., DÖTSCH C.

Summary

Paraffin is an easily available organic phase change material. Paraffin oil can be dispersed in the form of a small droplet in water as an oil-in-water emulsion. The binary fluid has a high heat capacity in the phase change temperature range of the used paraffin. The subject of this paper is the evaluation of the potential of paraffin oil-in-water emulsion for the cold energy storage application. The commercial paraffin blend (mixtures of different saturated alkanes) Rubitherm RT10 with a melting temperature of 10°C was used to make the emulsion. The following properties have been investigated of the emulsion: distribution of droplet size and the dependence between supercooling and droplet size; thermal properties as the latent heat of fusion, the phase change temperature range and optimal operation temperature rang in practical application and; rheological properties. A series of samples with weight percentages from 15 to 50% have been prepared. The properties of the emulsion in dependence of the paraffin concentration have been studied. The results show that an emulsion with a paraffin concentration up to 50 weight percent is an attractive candidate for cold storage application due to its high heat capacity.

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Pages: ICR07-D1-892

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Details

  • Original title: Evaluation of properties on paraffin oil-in-water emulsion as phase change slurry.
  • Record ID : 2008-0670
  • 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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