Abstract:

Due to the increasing development of nano-technology and its practical application, many researches on nanofluids find that nano-particles can enhance heat and mass transfer.In this paper, a series of experimental investigations are conducted to observe the stability of carbon black nano-particle suspension with different concentration of nano-particles and ammonia solution in order to apply nanofluid to the adsorption system.Mulsifier OP-10 is used as surfactant.The concentration of nano-particles in the nanofluid and surfactant in the nanofluid is considered as the key parameters.Based on Langmuir adsorption theory, a model for optimal and minimum mass concentration ratio of nano-particle and surfactant is established, in accord with experiments.

Key words: 纳米流体, 吸附, 表面活性剂;稳定性

摘要：

随着纳米材料科学的迅速发展，越来越多的研究表明纳米颗粒不仅能强化传热，同时也能强化吸收。本文提出了在氨水溶液中添加碳纳米颗粒和表面活性剂辛基苯酚聚氧乙烯醚(OP-10)的配制纳米流体的方法，并对其稳定性进行了一定的实验研究。根据吸附理论讨论了活性剂对纳米炭黑颗粒在氨水溶液中的分散机理，在此基础上，探讨了一定纳米颗粒浓度所对应的最小的活性剂浓度，以及表面活性剂浓度对纳米颗粒悬浮液稳定性的影响。以便为氨水纳米流体的强化吸收研究作基础。

关键词: 纳米流体, 吸附, 表面活性剂;稳定性