Analysis of thermophysical characteristic of SiO2/water nanofluid and heat transfer enhancement with field synergy principle

被引：10
|
作者：
Yan, Suying [1 ,2 ,3 ]
Zhang, Huiying [1 ]
Wang, Feng [1 ,2 ,3 ]
Ma, Rui [1 ]
Wu, Yuting [4 ]
Tian, Rui [1 ,2 ,3 ]
机构：
[1] Inner Mongolia Univ Technol, Coll Energy & Power Engn, Hohhot 010051, Inner Mongolia, Peoples R China
[2] Minist Educ, Key Lab Wind & Solar Power Energy Utilizat Techno, Hohhot 010051, Inner Mongolia, Peoples R China
[3] Inner Mongolia Construct, Hohhot 010051, Inner Mongolia, Peoples R China
[4] Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Beijing 100124, Peoples R China
来源：
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY | 2018年 / 10卷 / 06期
关键词：
THERMAL-CONDUCTIVITY; AL2O3; MODEL; FLOW;
D O I：
10.1063/1.5051207
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Nanofluid is one of the most popular and promising heat-transfer fluids. SiO2/water nanofluid suspension stability and their thermophysical characteristics were investigated. Specifically, the suspension stability of the nanofluid was characterized using a Malvern Zetasizer Nano Instrument. The thermal conductivity of the nanofluid was studied at different temperatures and particle sizes. The results indicated that the thermal conductivity of the nanofluid with a mass fraction of 5% increased to 6.8% compared with the water based fluid. Meanwhile, the mean field synergy angle of the spiral microchannel radiator with different properties of the nanofluid was simulated based on different structure microchannel sizes to evaluate the heat transfer performance according to the velocity and the temperature field. The results indicated that the mean field synergy angle was proportional to the nanoparticle size while inversely to the mass fraction of the nanofluid, and their strengthening heat transfer effect was enhanced. The structure size of the microchannel was one of the important effect factors on the mean field synergy angle. Published by AIP Publishing.
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收藏
页数：11
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