微胶囊相变悬浮液用于储能/输能系统的性能评价

关键字：微胶囊,相变,悬浮液,储能,输能系统

（四川大学 建筑与环境学院，四川 成都   610065）

    摘要：微胶囊相变材料悬浮液（MEPCMs）用作管道中储能介质和能量输送介质，既可以增大相变材料的表观面积和导热系数，还可以消除“相分离” 现象，而且微胶囊相变材料悬浮液的储能密度远大于水，输送等量的能量可大大减少所需要的储能介质量，从而减小泵的运行能耗及系统中输送管道和设备的尺寸。研究了该MEPCMs通过储能/输能系统时，MEPCMs的浓度、温度（相态）和泵的输入功率对微胶囊相变材料悬浮液的流动性以及能量输送能力的影响。结果表明，当MEPCMs浓度为20%时，其流动性和能量输送能力能较好地满足该系统的需求。
    关键词：微胶囊相变悬浮液；流动性；能量输送能力；性能评价
    中图分类号：TU832.1+8        文献标识码：A        文章编号：1001-702X（2017）09-0125-05

Study on the performance evaluation of microencapsulated phase change slurry for energy storage and energy transfer system
LIANG Fei，ZHANG Wei，ZHENG Lin
（School of Architecture and Environment， Sichuan University，Chengdu 610065，China）

    Abstract：Microencapsulated phase change material slurry（MEPCMs） as energy storage medium and energy transfer medium for conduit，can not only increase the surface area and thermal conductivity of phase change materials，but also eliminate the phenomenon of phase separation. Moreover，the energy storage density of the MEPCMs is much larger than that of the water，when equal energy transferred，the energy storage medium can be greatly reduced，so that the energy consumption of pumps，dimensions of piping and equipment in the system can be greatly reduced. Based on a new type of MEPCMs through an energy storage/ transport system，the effects of the concentration and temperature（phase） of MEPCMs，and the input power of the pump on the fluidity the energy transfer capacity of the MEPCMs were studied. The experimental results show that when the concentration of MEPCMs is 20%，the fluidity and energy transfer capability can meet the demand of the system.
    Key words：microencapsulated phase change slurry，fluidity，energy transfer capacity，performance assessment