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Thermal conductivity and heat transfer performance enhancement of phase change materials (PCM) containing carbon additives for heat storage application.

Author(s) : CHOI D. H., LEE J., HONG H., et al.

Type of article: Article, IJR article

Summary

In thermal storage system, a high thermal conductivity of Phase Change Materials (PCM) is required to complement the crystallization phenomenon of the PCM during the discharging process. In this study, PCM with carbon additives, Multi-walled Carbon nanotube, Graphite and Graphene, are manufactured and the thermal conductivity of the PCM is measured by the transient hot-wire method for thermal storage application. The thermal conductivity of the PCM is enhanced by adding the carbon additives, and the effect of Poly Vinyl Pyrrolidone (PVP) as a dispersion stabilizer on the thermal conductivity is evaluated. It is found that the heat transfer rate enhances up to 3.35 times in the case of Graphite at 5.0 vol%. It is finally concluded that Graphite is the most promising candidate for heat transfer enhancement of stearic acid among three carbon additives even though Graphene gives the highest thermal conductivity enhancement.

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Pages: 112-120

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Details

  • Original title: Thermal conductivity and heat transfer performance enhancement of phase change materials (PCM) containing carbon additives for heat storage application.
  • Record ID : 30011438
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 42
  • Publication date: 2014/06

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