Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fabrication and characterization of form-stable capric-palmitic-stearic acid ternary eutectic mixture/nano-SiO2 composite phase change material
HighlightsThe ternary eutectic mixture with high latent heat was prepared.The CA-PA-SA/nano-SiO2 composite PCM with low thermal conductivity was fabricated.The phase change temperature within the human comfort range was measured.The morphology, chemical structure, stabilities of the composite PCM were studied.
AbstractPhase change materials (PCMs) have great potential for the regulation of indoor temperature and building energy saving. In this study, capric acid-palmitic acid-stearic acid (CA-PA-SA) ternary eutectic mixture was impregnated into nano-silicon dioxide (nano-SiO2) to prepare a form-stable composite PCM (CA-PA-SA/nano-SiO2). The phase change temperature range of the composite PCM is 17.16°C–26°C, which is suitable for indoor thermal environment. The high latent heat value and the low thermal conductivity of the composite PCM are 99.43kJkg−1 and 0.08239W (mK)−1, which is helpful to stabilize the indoor temperature for a long time and improve human comfort. Furthermore, after 500 heating/cooling cycles, the composite PCM showed good thermal and chemical stability. The maximum CA-PA-SA mass fraction of the composite PCM was determined as high as 75wt.%, with no melted CA-PA-SA seeping from the composite PCM. All the results indicated that the composite PCM is suitable for storing excess solar radiation and reducing the amount and rate of heat loss of buildings in the winter, which will help reduce building energy consumption.
Fabrication and characterization of form-stable capric-palmitic-stearic acid ternary eutectic mixture/nano-SiO2 composite phase change material
HighlightsThe ternary eutectic mixture with high latent heat was prepared.The CA-PA-SA/nano-SiO2 composite PCM with low thermal conductivity was fabricated.The phase change temperature within the human comfort range was measured.The morphology, chemical structure, stabilities of the composite PCM were studied.
AbstractPhase change materials (PCMs) have great potential for the regulation of indoor temperature and building energy saving. In this study, capric acid-palmitic acid-stearic acid (CA-PA-SA) ternary eutectic mixture was impregnated into nano-silicon dioxide (nano-SiO2) to prepare a form-stable composite PCM (CA-PA-SA/nano-SiO2). The phase change temperature range of the composite PCM is 17.16°C–26°C, which is suitable for indoor thermal environment. The high latent heat value and the low thermal conductivity of the composite PCM are 99.43kJkg−1 and 0.08239W (mK)−1, which is helpful to stabilize the indoor temperature for a long time and improve human comfort. Furthermore, after 500 heating/cooling cycles, the composite PCM showed good thermal and chemical stability. The maximum CA-PA-SA mass fraction of the composite PCM was determined as high as 75wt.%, with no melted CA-PA-SA seeping from the composite PCM. All the results indicated that the composite PCM is suitable for storing excess solar radiation and reducing the amount and rate of heat loss of buildings in the winter, which will help reduce building energy consumption.
Fabrication and characterization of form-stable capric-palmitic-stearic acid ternary eutectic mixture/nano-SiO2 composite phase change material
Luo, Zigeng (Autor:in) / Zhang, Hua (Autor:in) / Gao, Xuenong (Autor:in) / Xu, Tao (Autor:in) / Fang, Yutang (Autor:in) / Zhang, Zhengguo (Autor:in)
Energy and Buildings ; 147 ; 41-46
03.04.2017
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2016
| British Library Online Contents | 2008