期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 200, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.solmat.2019.110034
关键词
Solar energy storage; Building energy conservation; Phase change material; Calcium chloride hexahydrate; Cesium tungsten bronze
资金
- National Natural Science Foundation of China [U1507201]
Phase change materials (PCMs) with excellent energy conservation performance have been extensively utilized in solar energy storage system. In this study, a novel kind of thermal storage composite material based on calcium chloride hexahydrate (CaCl2 center dot 6H(2)O) salt hydrate as core PCM and cesium tungsten bronze (CsxWO3) nanoparticles as near-infrared (NIR) light absorbent additives is fabricated. The effect of CsxWO3 nanoparticles on crystalline morphology, thermal physical behaviors and light transmittance of CaCl2 center dot 6H(2)O are investigated. Additionally, thermal cycle tests are conducted for stability examination. Furthermore, thermal regulating performance of double layer glass window filled with the PCM composite is tested in small chambers by being sunlight irradiated under a solar simulator. All results manifest that with the incorporation of CsxWO3 nanoparticles, the salt hydrate PCM composite exhibits large latent heat, low supercooling degree and high NIR light shielding ability as well as good thermal stability. When employed as the glazing window of a test room, the PCM panel has functions of reducing indoor temperature fluctuations and increasing thermal inertia. Hence, the salt hydrate/nano CsxWO3 PCM design in this work shows great potentials for the development of solar energy storage products in energy conservation fields.
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