导热系数是反映介质换热能力的主要参数,具有重要的理论和应用意义。详细介绍国内外纳米流体制备及其导热系数的研究进展情况,对比和总结国内外研究者的研究结果。表明:纳米流体能显著提高基液的导热系数,但不同的研究者对于纳米流体导热系数的研究得出的结果存在一定差异,有待于进一步的深入研究。 Thermal conductivity is the main parameter reflecting the heat transfer capacity of the medium, which has important theoretical and practical significance. This paper introduces the research progress of preparation and thermal conductivity of nanofluid at home and abroad, compares and summarizes the research results of researchers at home and abroad. It is shown that the nanofluids can significantly improve the thermal conductivity of the base fluid, but different researchers have some differences in the results of the study on the thermal conductivity of nanofluids, which needs to be further studied.