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Study on indoor thermal environments control with phase-change materials. 2. Experiment on the thermal conduction with phase change of paraffin and numerical validation of PCM model.

[In Japanese. / En japonais.]

Author(s) : SOEDA H., ONISHI J., NAKATA A., et al.

Type of article: Article

Summary

Firstly, the thermal properties of PCM were investigated through various experiments, including DSC (Differential Scanning Calorimetry) tests. As a result, the phase-change temperature and the latent heat of paraffin were measured, and the existence of supercooling and hysteresis in the freezing process were also confirmed. Then, a nonlinear model for latent heat and a model for hysteresis in freezing process were also confirmed. A nonlinear model for latent heat and model for hysteresis in the phase-change process were developed based upon the experimental results. In order to validate the numerical model, another experiment was conducted by using the same PCM. Measured data were compared with the numerical results. Finally, numerical simulation for PCM wallboard containing paraffin was conducted by using the model for hysteresis, and the characteristics of PCM wallboard were investigated.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2005-0728
  • Languages: Japanese
  • Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 94
  • Publication date: 2004/07

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