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Study on the heat conduction of phase-change material microcapsules

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Abstract

The 3ω approach was used to measure the effective thermal conductivity of phase-change material microcapsules (PCMMs) based on urea formaldehyde and sliced paraffin. The effective thermal conductivities of PCMMs with different densities were measured within the phase-change temperature range. The relationships between effective thermal conductivity, density and temperature were analysed. The effective thermal conductivity reached peak values within the phase-change temperature range and the temperature peak value was consistent with the peak value of the phase-change temperature. The effective thermal conductivity increased with increasing density due to the decreased porosity of samples and their increased solid-phase conduction.

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Authors and Affiliations

  1. Dept. of Pharmacology, General Hospital of Beijing Military Command, Chinese People’s Liberation Army, Beijing, CN

    Gangtao Zhao

  2. Troop of Chinese People’s Liberation Army, 95824, Beijing, CN

    Xiaohui Xu

  3. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Bejing, China

    Lin Qiu, Xinghua Zheng & Dawei Tang

Authors
  1. Gangtao Zhao
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  2. Xiaohui Xu
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  3. Lin Qiu
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  4. Xinghua Zheng
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  5. Dawei Tang
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Additional information

The financial supports provided by National Basic Research Program of China (Grant No.2012CB933200) and National Natural Science Foundation of China (Grant No. 51106151) are gratefully acknowledged.

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Zhao, G., Xu, X., Qiu, L. et al. Study on the heat conduction of phase-change material microcapsules. J. Therm. Sci. 22, 257–260 (2013). https://doi.org/10.1007/s11630-013-0621-2

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  • DOI: https://doi.org/10.1007/s11630-013-0621-2

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