双螺旋盘管内膨胀石墨对相变材料的传热强化机制与蓄放热性能

郭艳芹, 曾镇, 张弘光, 凌子夜, 张正国, 方晓明

Investigation of heat transfer enhancement mechanism and performance of phase change materials using expanded graphite in double helical coils

Yanqin GUO, Zhen ZENG, Hongguang ZHANG, Ziye LING, Zhengguo ZHANG, Xiaoming FANG

表 3 不同膨胀石墨质量分数下复合相变材料的热物性

Table 3 Thermophysical properties of composite phase change materials with different mass fractions of expanded graphite

CPCM种类 EG质量 分数/% 热导率 /[W/(m·K)] 相变焓 /(J/g) 黏度 /mPa·s 0 0 0.23 264.90 17.00 1 1 0.50 262.25 52.23 2 2 0.65 259.60 585.57 3 3 0.86 256.95 1708.20 4 4 1.30 254.30 4166.89 5 5 1.70 251.65 固体