化工进展2018，Vol.37Issue(6)：2323-2330,8.DOI:10.16085/j.issn.1000-6613.2017-1525
石墨烯复合相变微胶囊悬浮液的对流换热特性
Convection heat transfer characteristics of graphene-based phase change microcapsule slurries
摘要
Abstract
Microcapsule slurries,produced by adding microcapsule particles into the base fluid,exhibit high heat storage and carrier density. They can be used in both heat storage and heat transport. However,one of the main disadvantages of microcapsule slurries is their low thermal conductivity due to the low thermal conductivity of microcapsules. To improve the thermal conductivity of the phase change microcapsules,a composite phase change microcapsule doped with graphene was prepared. The microcapsule slurries were then prepared by dispersing the microcapsules in water. An experimental system was set up to investigate convective heat transfer characteristics of water,phase change microcapsule slurries and the graphene-based phase change microcapsule slurries by allowing them flow in a horizontal tube. The experimental results show that that the convection heat transfer coefficient increases with the rise of temperature and decreases with the increase of concentration. Furthermore,when the velocity is greater than 1.5m/s,the heat transfer coefficient of 15% graphene-based microcapsule slurries are higher than that of water,which shows good heat transfer performance. The results provide a reference and basis for the design of heat transport system using microcapsule slurries.关键词
相变微胶囊悬浮液/相变/悬浮系/对流/传热Key words
phase change microcapsule slurry/phase change/suspensions/convection/heat transfer分类
通用工业技术引用本文复制引用
申俊锋,邹得球,刘小诗,郭江荣,胡云平,胡志钢,刘默..石墨烯复合相变微胶囊悬浮液的对流换热特性[J].化工进展,2018,37(6):2323-2330,8.基金项目
浙江省自然科学基金(LY17E060001)、宁波市自然科学基金(2017A610019)、国家自然科学基金(51206083)及浙江省公益性技术应用研究项目(2012C21063). （LY17E060001）
