摘要
潜热型石蜡相变乳状液是一种新颖的储传热工质。该研究采用"两步法"制备一种石蜡质量分数为30%,并掺入0.1%Cu纳米粒子的复合相变石蜡乳状液,并将这种复合相变乳状液作为太阳集热器的集热-储热-传热工质。通过与纯Cu纳米流体热工质比较,研究两者的集热-放热规律,分析并计算以复合相变乳状液作为工质的集热器的日平均热效率。结果表明:复合相变乳状液热工质具有优异的热物性,适合用作太阳集热器的热工质,其日平均集热效率可达60%以上。
Phase change paraffin emulsion is a novel heat transfer and storage thermal-fluid. In this work, Copper nanoparticle/paraffin composite emulsions （CPC）was prepared by ＂two-step＂ method, and the CPCs are used as heat collect-heat storage-heat transfer fluid for solar collectors. Compared with pure Cu nanofluids, the heat collect-exothermic law was studied, and the daily average thermal efficiency of CPC collector is analyzed and calculated. The results showed that： The CPCs have excellent thermal properties, suitable for use as thermal solar collectors thermal-fluid, its daily average thermal collector efficiency up to 60%.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第1期142-146,共5页
Acta Energiae Solaris Sinica
基金
国家科技支撑计划(2014BAA01B02)
中国博士后科学基金(2011M501095)
2013年大学生创新创业训练计划(1184513239)
关键词
纳米材料
石蜡乳状液
潜热
集热工质
nano-materials
paraffin emulsion
latent heat
thermal-fluid
