Preparation and Properties of Cement Bricks Based Paraffin for Thermal Energy Storage by Phase Change

Abstract:

Using paraffin as phase change material, expanded perlite (EP) as porous materials, the EP/paraffin was prepared by vacuum impregnation treatment and tested by scanning electron microscopy (SEM). Adding other building materials, cement bricks based paraffin (CBBP) for thermal energy storage were molded and tested by means of water absorption, compressive strength and actual working of thermal energy storage. The testing results showed that paraffin was absorbed into the holes and cracks of EP, and CBBP had not linear change of various properties versus amount of cement or paraffin. Its mechanical strength was full compliance with national standard GB 21144-2007-T. At last, by phase change material exothermic or endothermic, CBBP effectively regulated outdoor surface temperature in summer: in temperature rising stage, CBBP was 4.63 °C lower than general cement bricks (GCB, no paraffin); in the cooling stage, CBBP was 2.30 °C higher than GCB.

• Periodical: Advanced Materials Research (Volume 279)
• Pages: 97-100
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.279.97
• Online since: July 2011
• Authors: Hai Feng Chen, Pei Song Tang, Feng Cao, Min Hong Xu
• Keywords: Cement Brick, Expanded Perlite, Paraffin, Phase Change Materials (PCM)

References

[1] P. Zhang, Y. Hua, L. Song, J.X. Ni, W.Y. Xing and J. Wang: Effect of expanded graphite on properties of high-density polyethylene/paraffin composite with intumescent flame retardant as a shape-stabilized phase changematerial. Sol. Energy Mater. Sol. Cells. Vol. 94(2010), pp.360-365

DOI: 10.1016/j.solmat.2009.10.014

[2] L. Bayés-García, L. Ventolà, R. Cordobilla, R. Benages, T. Calvet, M.A. Cuevas-Diarte: Phase Change Materials(PCM) microcapsules with different shell compositions: Preparation, characterization and thermal stability. Sol. Energy Mater. Sol. Cells. Vol. 94 (2010), pp.1235-1240.

DOI: 10.1016/j.solmat.2010.03.014

[3] Atul Sharma, V.V. Tyagi, C.R. Chen, D. Buddhi: Review on thermal energy storage with phase change materials and applications, Renewable and Sustainable Energy Reviews. Renewable and Sustainable Energy Reviews. Vol. 13 (2009), pp.318-345.

DOI: 10.1016/j.rser.2007.10.005

[4] Takahiro Nomura, Noriyuki Okinaka and Tomohiro Akiyama: Impregnation of porous material with phase change material for thermal energy storage. Mater. Chem. Phys. Vol. 115 (2009), pp.846-850.

DOI: 10.1016/j.matchemphys.2009.02.045

[5] Z.Y. Wang, X.T. Lin, F. Chen, X.S. Wang, H. Ruan, X.P. Fan and G.D. Qian: Preparation and Evaluation of phase change energy storage building material. New Building Materials. Vol. 11 (2006), pp.35-37 (In Chinese).