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Thermal behavior mapping of a phase change material between the heating and cooling enthalpy-temperature curves

Benoit Delcroix, Michaël Kummert and Ahmed Daoud

Conference or Workshop Item - Paper (2015)

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Cite this document: Delcroix, B., Kummert, M. & Daoud, A. (2015, June). Thermal behavior mapping of a phase change material between the heating and cooling enthalpy-temperature curves. Paper presented at 6th International Building Physics Conference (IBPC 2015), Torino, Italy. doi:10.1016/j.egypro.2015.11.612
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Abstract

This paper presents the results of experimental tests performed on a wall section equipped with phase change materials (PCM). The wall is quickly transferred between cold and warm enclosures to observe the PCM behavior when melting or solidification is interrupted. A 1-D model of the wall based on the enthalpy method is used to identify the enthalpy curves that provide the best fit to experimental data. Results show that the PCM experiences a quick transition between different enthalpy curves when the heat flow direction (heating or cooling) is reversed during phase-change. According to our experiments and to the comparison with the 1-D model, the PCM investigated here follows an enthalpy curve that is very close to the heating curve when a cooling process is interrupted during solidification. If a heating process is interrupted during melting, the PCM follows an enthalpy curve that is located between the heating and cooling curves. This information is important to develop models for PCM used in buildings and further work is required to assess the impact of different factors on the transitional behavior. (C) 2015 The Authors. Published by Elsevier Ltd.

Uncontrolled Keywords

phase change material (pcm); enthalpy-temperature curves; latent energy storage; enthalpy method; interrupted solidification / melting; energy-storage

Open Access document in PolyPublie
Subjects: 2100 Génie mécanique > 2100 Génie mécanique
2100 Génie mécanique > 2110 Combustion
Department: Département de génie mécanique
Research Center: Non applicable
Date Deposited: 14 Jul 2021 13:14
Last Modified: 15 Jul 2021 01:20
PolyPublie URL: https://publications.polymtl.ca/4840/
Document issued by the official publisher
Conference Title: 6th International Building Physics Conference (IBPC 2015)
Conference Location: Torino, Italy
Conference Date(s): 2015-06-14 - 2015-06-17
Journal Title: Energy Procedia (vol. 78)
Publisher: Elsevier
Official URL: https://doi.org/10.1016/j.egypro.2015.11.612

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