Experimental study of the hydraulic and thermal performances of nano-sized phase change emulsion in horizontal mini-tubes
Experimental study of the hydraulic and thermal performances of nano-sized phase change emulsion in horizontal mini-tubes
复制标题
水平微管纳米相变乳液水力及热力性能实验研究
DOI：
10.1016/j.energy.2018.02.085
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发表时间：
2018-04
期刊：
影响因子：
9
通讯作者：
P. Zhang
中科院分区：
文献类型：
--
作者：
F. Ma;J. Chen;P. Zhang
相变乳液（PCE）是通过将相变材料（PCM）颗粒分散在承载流体中而形成的，作为传热流体和储能介质引起了人们的广泛关注。本研究以正十六烷为相变材料，采用d相法制备纳米四氯乙烯。相变材料的质量分数约为10.0wt%和20.0wt%，平均粒径约为290nm。在不同内径的微型管中对层流中纳米 PCE 的热流体性能进行了实验研究。将PCE的压降与纯水的压降进行了比较，并研究了摩擦因数随雷诺数的变化。 PCE的局部传热系数（LHTC）沿流动方向逐渐减小至最小值然后增大。 PCE的传热性能随着PCM质量分数和流速的增加而提高，并且在较小的管内增强更显着。此外，加热功率也显示了对PCE传热性能的影响。提出了层流中PCE的传热关联式，与实验结果相比偏差在±20.0%以内。
Phase change emulsion (PCE), which is formed through dispersing the phase change material (PCM) particles in the carrying fluid, has attracted many attentions as both the heat transfer fluid and energy storage medium. In the present study, nano-sized PCE is prepared by thed-phase method with n-hexadecane as the PCM. The mass fractions of the PCM are about 10.0 wt% and 20.0 wt% and the average particle size is about 290 nm. The thermo-fluidic performances of the nano-sized PCE in laminar flow are experimentally investigated in the mini-tubes with different inner diameters. The pressure drop of the PCE is compared with that of pure water, and the variation of the friction factor with the Reynolds number is also studied. The local heat transfer coefficient (LHTC) of the PCE gradually reduces to the minimum value and then increases along the flow direction. The heat transfer performance of the PCE is improved with the increase of mass fraction of the PCM and flow velocity, and the enhancement is more significant in smaller tube. In addition, the heating power also shows the effect on the heat transfer performance of the PCE. The heat transfer correlation of the PCE in laminar flow is proposed and the deviation is within ±20.0% compared to the experimental results.
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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
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：
2.3
作者：
Zhennan Zhao;Yuquan Shi
通讯作者：
Zhennan Zhao;Yuquan Shi
DOI：
10.1016/j.ijheatmasstransfer.2010.04.025
发表时间：
2010-09-01
影响因子：
5.2
作者：
Ma, Z. W.;Zhang, P.;Xi, G. N.
通讯作者：
Xi, G. N.
影响因子：
9
作者：
Tumirah, K.;Hussein, M. Z.;Rafeadah, R.
通讯作者：
Rafeadah, R.