Heat storage properties of the cement mortar incorporated with composite phase change material

Min Li, Zhishen Wu and Jinmiao Tan

Applied Energy, 2013, vol. 103, issue C, 393-399

Abstract: An experimental study is presented on the cement mortar incorporated with expanded graphite (EG)/paraffin composite phase change material (PCM). The composite PCM was prepared by absorbing paraffin into EG with vacuum absorption method. The heat storage cement mortar (HSCM) with proper mass fraction of the composite PCM was prepared. A testing device was designed for evaluating the heat storage effect of HSCM. Temperature variation and heat storage coefficient of HSCM were compared to those of the ordinary cement mortar (OCM). For a cubic with one HSCM board and a cubic with one OCM board, the maximum indoor center temperature difference is 2.2K during the heat storage and 1.5K during the heat release process. The heat storage coefficient of HSCM board is 1.74 times of that of OCM board. The results indicate that the HSCM board has good heat storage property.

Keywords: Phase change material; Graphite; Heat storage; Cement mortar (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (13)

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DOI: 10.1016/j.apenergy.2012.09.057

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