Abstract: As a kind of special liquid-solid mixture consisting of nanoparticles and base fuel,liquid nanofuel has many advantages such as high heat transport capability,good catalytic combustion performance and low pollutant emission. However,the small size characteristic of nanoparticle makes the heat and mass transport mechanism,spray and evaporation performance,and combustion chemical reaction of liquid nanofuel very complex,leading to imperfection of the theories and application of liquid nanofuel for combustion enhancement. In this paper,the approaches of preparation and stability treatment for liquid nanofuel are introduced firstly. Then,the effects of nanoparticles on thermophysical parameters,atomization,evaporation and combustion characteristics of base fuel are analyzed in detail. In addition,the potential application values of liquid nanofuel in power plants for improving performance and reducing emission are reviewed emphatically. On this basis,this paper envisions the future research trends of liquid nanofuel for combustion enhancement. It is indicated that the efficient and controllable preparation approach,characteristics and mathematical description of thermophysical parameters,mechanisms of catalytic combustion and emission reduction are the important problems to be solved in the field of liquid nanofuel.

Key words: liquid nanofuel, nanoparticle, thermophysical property, combustion enhancement, emission control

摘要： 液态纳米燃料是一种由纳米颗粒与燃料基液组成的特殊液-固两相混合物，具有热传输能力强、催化助燃性能好、污染物排放低等诸多优点。然而，纳米颗粒的小尺寸特征使得液态纳米燃料的热/质输运机理、雾化蒸发特性以及燃烧化学反应过程极其复杂，导致液态纳米燃料强化燃烧理论与应用研究至今还存在许多问题。本文首先介绍了液态纳米燃料制备与稳定性处理方法，其次分析了纳米颗粒影响下液态燃料热物性参数、雾化、蒸发与燃烧特性的研究进展，然后重点综述了液态纳米燃料在动力装置性能提升与污染物减排领域的潜在应用价值。在此基础上，对液态纳米燃料强化燃烧技术的未来研究方向进行了展望，指出高效可控制备方法、热物性参数变化规律与数学描述、催化助燃与减排机制是液态纳米燃料领域亟需解决的重点问题。

关键词: 液态纳米燃料, 纳米颗粒, 热物性, 强化燃烧, 排放控制