Transient Heat Storage Characteristics on Horizontal Rectangular Enclosures Filled with Fluidity Slurry of Micro-encapsulated Phase-change-material Dispersed in Water
Transient Heat Storage Characteristics on Horizontal Rectangular Enclosures Filled with Fluidity Slurry of Micro-encapsulated Phase-change-material Dispersed in Water
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DOI：
10.1299/jtst.1.66
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发表时间：
2006
影响因子：
1.2
通讯作者：
H. Inaba;Yanlai Zhang;A. Horibe
中科院分区：
文献类型：
--
作者：
H. Inaba;Yanlai Zhang;A. Horibe
采用微胶囊微细相变材料（PCM）和水组成的流动性浆料，对矩形封闭空间内自下而上加热的自然对流蓄热行为进行了二维数值模拟。研究了相变微胶囊浆料的储热和传热特性。相变微胶囊浆料具有假塑性非牛顿流体行为，相变潜热在相变温度范围内比热容出现峰值。本文还比较了相变前后相同微胶囊浆料的性能，阐明了相变温度范围内微胶囊浆料的蓄热性能优于相变微胶囊浆料的上级性能。研究了加热壁温TH、浆体相变材料质量浓度Cm和围护结构高度H对蓄热效果的影响。
A two-dimensional numerical simulation of heat storage behavior by natural convection in rectangular enclosures heated from below has been conducted with fluidity slurry composed of micro-encapsulated fine phase-change-material (PCM) and water. Both heat storage and heat transfer characteristics were discussed with micro-encapsulated PCM slurry, which exhibited the pseudoplastic non-Newtonian fluid behavior and a peak value in the specific heat capacity with latent heat in phase temperature range. This paper also compared their characteristics between the same microcapsule slurries with and without phase change of PCM, and its superior performance for heat storage to the PCM microcapsule slurry in the phase-change temperature range was clarified. The effects of the heating wall temperature TH, the PCM mass concentration Cm of the slurry and the height H of the enclosure on heat storage were revealed, respectively.