Research Progress in Heat and Mass Transfer Enhancement of the Ammonia Falling Film Absorption

The studies in recent years about performance reinforcement in the ammonia falling film absorption are introduced in this paper. The enhancement methods and absorption performance influencing factors are summarized and analyzed. Some deficiencies in this research field are pointed out and future research directions are also discussed. It is pointed out that a combination way of physical treatment, chemical treatment and application of nanotechnology is probably the trend of strengthening the absorption performance in the future.