摘要
选择有机材料RT28HC作为相变蓄热材料,对等壁温(竖向)条件下矩形及楔形蓄热装置的热性能进行对比实验研究,包括蓄热过程典型时刻的相界面记录及多点温度的监测.结果显示:所述矩形及楔形装置均具有二维传热特性;与传统的矩形装置相比,楔形的几何形状可有效改善装置的竖向温度分布,消除装置底部的传热及融化死角,实现强化传热.热源温度越高时,楔形几何形状的强化传热效果越显著.
An experimental study by contrast on melting performance of the rectangular and wedge-shaped thermal storage units was conducted.The organic RT28HC is employed as latent heat thermal energy storage material and melts in the unit heated from one vertical side.The solid-liquid interface distribution is recorded and temperature of multipoint is monitored during the melting process.Results show that both the rectangular and wedge-shaped unit show two-dimensional heat transfer characteristics.Compared with the traditional rectangular unit,there are significant improvements in the temperature distribution and melting process of wedge-shaped unit.The dead space of melting and heat transfer has been eliminated in this geometry,so the wedge-shaped unit can enhance the heat transfer of melting.Moreover,the higher the heat source temperature is the more significant is the heat transfer enhanced.
作者
胡志培
李安桂
高然
HU Zhipei;LI Angui;GAO Ran(School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental and Municipal Engineering, Xi′an Univ. of Arch. & Tech., Xi′an 710055, China)
出处
《西安建筑科技大学学报（自然科学版）》
北大核心
2019年第1期134-139,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
"十二五"国家科技支撑计划课题(2011BAJ03B03)
陕西省科技统筹创新工程计划项目(2016KTCL01-13)
关键词
相变材料
矩形装置
楔形装置
相界面
温度分布
phase change material(PCM)
rectangular unit
wedge-shaped unit
solid-liquid interface
temperature field
