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十四烷是工业中最常用的液态烷烃之一,常被用于有机溶剂,有重要的应用价值。相比于纯烷烃,烷烃基纳米流体具有许多优异的性质,特别是导热系数的增强。采用实验与理论模型对比的方法,对一些影响十四烷基纳米流体导热系数的因素进行研究,包括纳米颗粒种类、浓度、温度以及稳定性。结果表明,纳米流体的有效导热系数随纳米颗粒体积分数的增加而增加,随温度的升高而下降;在各种纳米颗粒中,碳纳米管对导热的增强最为显著,且碳纳米管流体具有最好稳定性。
Tetradecane is one of the most commonly used liquid alkanes in the industry. It is often used in organic solvents and has important application value. Alkane based nanofluids have many excellent properties compared to pure alkanes, in particular, an increase in thermal conductivity. Some experimental and theoretical models were used to study the factors influencing the thermal conductivity of tetradecylsilane nanofluids, including the type, concentration, temperature and stability of nanoparticles. The results show that the effective thermal conductivity of nanofluids increases with the increase of the volume fraction of nano-particles, and decreases with the increase of temperature. In all kinds of nano-particles, the enhancement of the thermal conductivity of carbon nanotubes is the most significant, The best stability.