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 language | English |
|---|---|
| Article number | 391 |
| Journal | Materials |
| Volume | 10 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 7 2017 |
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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 journal › Article
}
TY - JOUR
T1 - Design and preparation of carbon based composite phase change material for energy piles
AU - Yang, Haibin
AU - Memon, Shazim Ali
AU - Bao, Xiaohua
AU - Cui, Hongzhi
AU - Li, Dongxu
PY - 2017/4/7
Y1 - 2017/4/7
N2 - 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.
AB - 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.
KW - Composite phase change materials
KW - Energy piles
KW - Energy storage
KW - Expanded graphite
KW - Graphite nanoplatelet
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UR - http://www.scopus.com/inward/citedby.url?scp=85017425581&partnerID=8YFLogxK
U2 - 10.3390/ma10040391
DO - 10.3390/ma10040391
M3 - Article
VL - 10
JO - Materials
JF - Materials
SN - 1996-1944
IS - 4
M1 - 391
ER -