Experimental evaluation on natural convection heat transfer of microencapsulated phase change materials slurry in a rectangular heat storage tank
Experimental evaluation on natural convection heat transfer of microencapsulated phase change materials slurry in a rectangular heat storage tank
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矩形蓄热槽内微胶囊相变材料浆料自然对流换热实验评价
DOI：
10.1016/j.enconman.2012.02.004
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发表时间：
2012-07
影响因子：
10.4
通讯作者：
Li, Xiuping
中科院分区：
文献类型：
--
作者：
Zhang, Yanlai;Rao, Zhonghao;Wang, Shuangfeng;Zhang, Zhao;Li, Xiuping
在底部加热、顶部冷却的矩形蓄热槽内，对相变材料微胶囊化浆料（MPCMS）相变过程中的自然对流换热特性进行了研究。微胶囊相变材料是以正构石蜡（主要是十九烷）为芯材，外面包裹一层三聚氰胺树脂的几种材料组合物。在本研究中，其浆料与水混合使用。在T = 31 ° C左右，比热容随潜热的变化出现峰值。研究了相变储能系统相变过程对自然对流换热的影响。实验结果表明，相变材料的相变过程促进了自然对流换热。局部最大传热增强发生在对应于加热板温度的约TH = 34 ° C处。随着高质量浓度Cm，自然对流的开始变得更容易为MPCMS。矩形蓄热槽在顶板和底板附近温度梯度较大。相变材料的相变使传热系数增大。并总结出相变材料的相变过程促进了自然对流的发生。
The main purpose of this experiment is to evaluate natural convection heat transfer characteristics of microencapsulated PCM (phase change material) slurry (MPCMS) during phase change process in a rectangular heat storage tank heated from the bottom and cooled at the top. The microencapsulated PCM is several material compositions of n-paraffin waxes (mainly nonadecane) as the core materials, outside a layer of a melamine resin wrapped. In the present study, its slurry is used mixing with water. And the specific heat capacity with latent heat shows a peak value at the temperature of about T=31°C. We investigate the influences of the phase change process of the MPCMS on natural convection heat transfer. The experimental results indicate that phase change process of the MPCMS promote natural convection heat transfer. The local maximum heat transfer enhancement occurs at approximately TH=34°C corresponding to the heated plate temperature. With high mass concentration Cm, the onset of natural convection gets easier for the MPCMS. The temperature gradient is larger near top plate and bottom plate of a rectangular heat storage tank. Heat transfer coefficient increases with the phase change of the PCM. And it summarizes that the phase change process of the PCM promote the occurrence of natural convection.
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影响因子：
1.2
作者：
H. Inaba;Yanlai Zhang;A. Horibe
通讯作者：
H. Inaba;Yanlai Zhang;A. Horibe
新型潜热相变流体的制备及流动特性
影响因子：
6.9
作者：
Tu, Qiu;Song, Wenji;Zou, Deqiu;Xiao, Rui;Qin, Run;Zhang, Jianjun;Feng, Ziping
通讯作者：
Feng, Ziping
影响因子：
5.2
作者：
H. Inaba;S. Morita
通讯作者：
H. Inaba;S. Morita
影响因子：
9
作者：
B. Diaconu;S. Varga;Armando C. Oliveira
通讯作者：
B. Diaconu;S. Varga;Armando C. Oliveira
影响因子：
2.2
作者：
H. Inaba;Yanlai Zhang;A. Horibe;N. Haruki
通讯作者：
H. Inaba;Yanlai Zhang;A. Horibe;N. Haruki