添加剂和纳米粒子强化溴化锂水溶液／氨水吸收特性研究进展

吸收式制冷以其节能、环保等诸多优点得到了越来越广泛的应用。本文总结与分析添加剂和纳米粒子强化溴化锂水溶液及氨水吸收特性的机制和相关实验研究的发展现状。针对吸收式制冷系统中吸收器传质系数和换热系数小而导致的制冷效率低的问题，很多学者进行了添加剂和纳米粒子对吸收过程影响的实验研究，并据此采取措施增大传质传热效率。实验主要包括以下几个方面：表面张力实验、静态池吸收实验、降膜吸收实验和氨水鼓泡吸收实验。实验结果均表明添加剂和纳米粒子可以提高吸收器中溴化锂水溶液及氨水的传热传质性能。该研究对于提高吸收式制冷系统的制冷效率有很大帮助，同时为该技术在实际系统中的应用奠定基础。

Research progress of absorption characteristics enhancement of LiBr/NH3-H2O with additives and nano-particles

Absorption refrigeration has gained more and more application with its many advantages, such as energy-saving and environmental protection. The absorption characteristics enhancement mechanism of additives and nano-particles on lithium bromide aqueous solution and ammonia water and the development of experimental study are summarized and analyzed. The mass and heat transfer coefficients of the absorber are low,which causes that the refrigeration efficiency of the system is low. In order to solve the problem, many researchers have studied the effects of additives and nano-partieles on absorption through experiments, then taken measures to increase the efficiency of mass and heat transfer. The experiment mainly includes the following aspects：surface tension experiment, static pool experiment ,falling film experiment, blister absorption experiment of ammonia water. All experimental results show that additives and nano-particles can improve the heat and mass transfer performance of lithium bromide aqueous solution and ammonia water in the ab- sorber. The study will have great help to improve the efficiency of absorption refrigeration system, and also lay the foundation for the application of the technology.