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

Haibin Yang, Shazim Ali Memon, Xiaohua Bao, Hongzhi Cui, Dongxu Li

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish
Article number391
JournalMaterials
Volume10
Issue number4
DOIs
Publication statusPublished - Apr 7 2017

Fingerprint

Phase change materials
Piles
Carbon
Composite materials
Graphite
Pile foundations
Axial loads
Latent heat
Ointments
Thermal energy
Impregnation
Paraffin
Paraffins
Energy storage
Compressive strength
Heat exchangers
Cements
Vacuum
Cooling
Heating

Keywords

  • Composite phase change materials
  • Energy piles
  • Energy storage
  • Expanded graphite
  • Graphite nanoplatelet

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Design and preparation of carbon based composite phase change material for energy piles. / Yang, Haibin; Memon, Shazim Ali; Bao, Xiaohua; Cui, Hongzhi; Li, Dongxu.

In: Materials, Vol. 10, No. 4, 391, 07.04.2017.

Research output: Contribution to journalArticle

Yang, Haibin ; Memon, Shazim Ali ; Bao, Xiaohua ; Cui, Hongzhi ; Li, Dongxu. / Design and preparation of carbon based composite phase change material for energy piles. In: Materials. 2017 ; Vol. 10, No. 4.
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