A new type of absorber based on ultrasonic atomization enhanced in-tube falling film absorption process.

The absorber is a core component of the ammonia-water absorption refrigeration system (AARS). The ultrasonic atomizer can atomize the falling film solution into droplets, which is used to increase the effective mass transfer area between ammonia vapor and the solution. This paper proposes a new type of absorber with an ultrasonic atomizer installed inside the falling film tube and conducts simulation research. The results show that the ammonia absorption amounts of the in-tube parallel atomization absorber (Mode B) and the series atomization absorber (Mode C) are increased by 33.7% and 33.8% respectively. The ultrasonic atomizer significantly improves the absorption effect of the in-tube falling film absorber, which provides a new design idea and theoretical support for improving the performance of the absorber.