摘要
相变乳液是一种具有高储热密度、良好流动性和优异传热性能的潜热型功能热流体,在热能储存及热管理领域受到广泛关注。本文对相变乳液的研究现状进行了综述,系统性地介绍了相变乳液的类型及其制备方法,重点分析了相变乳液过冷度高、稳定性差的瓶颈问题及其解决策略,并对现有的应用研究进行了归纳。分析表明选用特殊长链乳化剂是降低乳液过冷度的优选方法,提高乳液稳定性需考虑多因素的相互影响。相变乳液在实际应用中展示出比水更高的热能储存容量及更优的冷却性能。预测开发功能化的新型相变乳液,并拓展其应用新领域可能成为未来的发展趋势。
Phase-change emulsion is a type of latent functional thermal fluid with high energy-storage density,good fluidity,and excellent convective heat-transfer performance,which has been widely applied in the field of heat storage and thermal management.In this study,the types and preparation methods for phase-change emulsion are systematically introduced.The bottleneck problems of high undercooling and poor stability of phase-change emulsions and their solutions were analyzed,and the existing application research was summarized.Selection of special long-chain emulsifiers was pointed out to be the preferred method for reducing the supercooling degree of the emulsion.To improve emulsion stability,the mutual influence of various factors must be considered.In the practical application,the phase-change emulsion demonstrated a higher thermal-energy-storage capacity and better cooling performance than water.Subsequent development of functionalized new phase-change emulsions and expansion of new application areas are predicted to possibly become a future development trend.
作者
冯锦新
凌子夜
方晓明
张正国
FENG Jinxin;LING Ziye;FANG Xiaoming;ZHANG Zhengguo(Key Laboratory of Enhanced Heat Transfer and Energy Conservation,Ministry of Education,School of Chemistry and Chemical Engineering,South China University of Technology;Guangdong Engineering Technology Research Center of Efficient Heat Storage and Application,Guangzhou 510640,Guangdong,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2022年第6期1968-1979,共12页
Energy Storage Science and Technology
基金
国家自然科学基金(21908067)
国家重点研发计划项目(2020YFA0210704)。
关键词
相变乳液
稳定性
过冷
热能储存
热管理
phase-change emulsion
stability
supercooling
thermal-energy storage
thermal management
