کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4919146 | 1428943 | 2017 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication and characterization of form-stable capric-palmitic-stearic acid ternary eutectic mixture/nano-SiO2 composite phase change material
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
Phase 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 99.43 kJ kgâ1 and 0.08239 W (m K)â1, 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 75 wt.%, 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 147, 15 July 2017, Pages 41-46
Journal: Energy and Buildings - Volume 147, 15 July 2017, Pages 41-46
نویسندگان
Zigeng Luo, Hua Zhang, Xuenong Gao, Tao Xu, Yutang Fang, Zhengguo Zhang,