采用"两步法"将ZnO纳米颗粒及分散剂阿拉伯树胶添加到基液中,制备质量分数为0.4%~2.292%的氧化锌纳米流体,同时对质量分数不同的纳米流体的稳定性及其在不同温度(15~55℃)下的导热性、黏度进行研究。结果表明,在质量分数为0.4%~1.552%下,氧化锌纳米流体稳定性更好。质量分数为0.4%~1.173%之间导热性相对基液有所提高,且质量分数为0.788%时导热效果最好。与基液相比,所制备的纳米流体的黏度都有所增加,并且质量分数越大黏度也相应越大。

ZnO nanoparticles and Arabic gum dispersant are added into base solution via two-step method to prepare zinc oxide nanofluids with mass fractions of 0.4%-2.292%.The stability of nanofluids with different mass fraction,and their thermal conductivity and viscosity at different temperature (15-55℃) are studied.Experimental results show that the stability of ZnO nanofluid is better at a mass fraction in the range of 0.4%-1.552%.Thermal conductivity of ZnO nanofluid with a mass fraction in the range of 0.4%-1.173% is higher than that of the base solution,and ZnO nanofluid has the best thermal conductivity when the mass fraction is 0.788%.Compared with the base solution,the prepared nanofluids has a higher viscosity,and the larger the mass fraction,the larger the viscosity.

石月(1997-),女,硕士研究生,主要研究方向为建筑人工环境调控与建筑节能技术,1783197735@qq.com。