design and preparation of carbon based composite phase change material for energy piles

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ID: 238287
2017
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Abstract
Energy piles—A fairly new renewable energy concept—Use a ground heat exchanger (GHE) in the foundation piles to supply heating and cooling loads to the supported building. Applying phase change materials (PCMs) to piles can help in maintaining a stable temperature within the piles and can then influence the axial load acting on the piles. In this study, two kinds of carbon-based composite PCMs (expanded graphite-based PCM and graphite nanoplatelet-based PCM) were prepared by vacuum impregnation for potential application in energy piles. Thereafter, a systematic study was performed and different characterization tests were carried out on two composite PCMs. The composite PCMs retained up to 93.1% of paraffin and were chemically compatible, thermally stable and reliable. The latent heat of the composite PCM was up to 152.8 J/g while the compressive strength of cement paste containing 10 wt % GNP-PCM was found to be 37 MPa. Hence, the developed composite PCM has potential for thermal energy storage applications.
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yang2017materialsdesign Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Haibin Yang;Shazim Ali Memon;Xiaohua Bao;Hongzhi Cui;Dongxu Li
Journal Nature Materials
Year 2017
DOI
10.3390/ma10040391
URL
http://www.mdpi.com/1996-1944/10/4/391
Keywords
energy storage expanded graphite graphite nanoplatelet electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general)

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