摘要
为了探究金属泡沫孔密度对石蜡融化性能的影响,设计搭建了相变蓄热实验台,制作了不同孔密度的复合相变材料。通过实验对比研究了镍复合相变材料和铜复合相变材料内部温度分布,分析了孔密度对导热和对流换热强度的影响,比较了在相同时间内镍复合相变材料和铜复合相变材料的蓄热量。实验结果表明:镍复合相变材料随着孔密度的增大,温度堆积现象加重;当孔密度为1.02 mm^-1时,镍复合相变材料的对流和导热换热强度相等;当孔密度为1.26 mm^-1时,铜复合相变材料的对流和导热换热强度相等;当孔密度为2.36 mm^-1时,铜复合相变材料对应的蓄热量最多;当孔密度为0.79 mm^-1时,镍复合相变材料对应的蓄热量最多。
To explore the melting behavior of paraffin wax in metal foam composite phase-change materials with different pore densities,a phase-change thermal storage experimental setup was designed and composite phase-change materials with different pore densities were prepared.The internal temperature distributions of the copper composite phase-change material and the nickel composite phase-change material were studied.The heat storage capacities of the copper composite phase-change material and the nickel composite phase-change material were compared.Experimental results showed that the temperature accumulation of the nickel composite phase-change material increases with the increase of pore density.For the nickel composite phase-change material,the heat transfer intensities of heat conduction and convection are equivalent when the pore density is 1.02 mm^-1,while for the copper composite phase-change material,it is 1.26 mm^-1.The copper composite phase-change material with the pore density of 2.36 mm^-1 has the maximum heat storage,and the nickel composite phase-change material with the pore density of 0.79 mm^-1 has the maximum heat storage.
作者
田东东
王会
刁永发
周颖
TIAN Dongdong;WANG Hui;DIAO Yongfa;ZHOU Ying(School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;Shanghai Jianke Guangshen Architectural Design Co. Ltd., Shanghai 200000, China)
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2020年第5期32-39,共8页
Journal of Xi'an Jiaotong University
基金
上海市青年科技英才扬帆计划资助项目(19YF14011700)
中央高校基本科研业务费专项资金资助项目(2232019D3-25)。
关键词
石蜡
金属泡沫
复合相变材料
孔密度
蓄热量
paraffin wax
metal foam
composite phase-change material
pore density
heat storage
