- Title
- Development of structural-functional integrated energy storage concrete with innovative macro-encapsulated PCM by hollow steel ball
- Creator
- Cui, Hongzhi; Tang, Waiching; Qin, Qinghua; Xing, Feng; Liao, Wenyu; Wen, Haibo
- Relation
- ARC.G1500225
- Relation
- Applied Energy Vol. 185, Issue Part 1, p. 107-118
- Publisher Link
- http://dx.doi.org/10.1016/j.apenergy.2016.10.072
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2017
- Description
- Phase change materials (PCMs) have great potential for applications in energy efficient buildings. In this study, an innovative method of macro-encapsulation of PCM using hollow steel balls (HSB) was developed and the thermal and mechanical performance of PCM-HSB concrete was examined. The macro-encapsulation system (PCM-HSB) was attached with a metal clamp (c) for better mechanical interlocking with the mortar matrix. The latent heat of PCM-HSB-c that can be acquired is approximately 153.1 J/g, which can be considered to rank highly among PCM composites. According to the self-designed thermal performance evaluation, the PCM–HSB-c concrete panel is capable of reducing and deferring the peak indoor temperature. The indoor temperature of the room model using PCM-HSB-c panels was significantly lower than the ones with normal concrete panels by a range of 3–6%. Furthermore, the test room using a higher PCM-HSB-c content demonstrated a greater ability to maintain a lower indoor room temperature for a longer period of time during heating cycles. In consideration of the mechanical properties, thermal performance and other aspects of cost factors, 50% and 75% PCM-HSB-c replacement levels are recommended in producing concrete.
- Subject
- macro-encapsulated phase change material; hollow steel ball; performance improvement; elevated temperature test; thermal performance
- Identifier
- http://hdl.handle.net/1959.13/1392136
- Identifier
- uon:33352
- Identifier
- ISSN:0306-2619
- Language
- eng
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