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Theoretical analysis of the enhancement effect of the combination of ultrasonic oscillation and atomization on the falling film absorption process of ammonia water and optimization of the combined parameters.

Author(s) : PAN C., LI J., ZHOU R., LI S., LI Y., WU J., LI G.

Type of article: IJR article

Summary

As the core component of the ammonia-water absorption refrigeration system (AARS), the falling film absorber plays a crucial role in enhancing the absorption process, which significantly impacts the improvement of the system’s performance. In this paper, a novel absorber that combines ultrasonic oscillation and atomization to enhance the falling film absorption process of ammonia water is proposed. This innovative approach can simultaneously increase the mass transfer area and the driving force for mass transfer. Moreover, a theoretical model of this new absorber is established to analyze its absorption enhancement effect. The results demonstrate that the combined enhancement effect of oscillation and atomization on absorption is superior to that of atomization or oscillation alone. When the total power of the atomizer and oscillator for a single falling film tube is 2 W, the droplet diameter is 17 μm, and the atomization rate is 0.54, the maximum absorption effect is increased by 44.95 %. This study provides a new perspective for the structural optimization of absorbers and the effective improvement of the performance of AARS systems.

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Pages: 19 p.

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Details

  • Original title: Theoretical analysis of the enhancement effect of the combination of ultrasonic oscillation and atomization on the falling film absorption process of ammonia water and optimization of the combined parameters.
  • Record ID : 30034553
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 182
  • Publication date: 2026/02
  • DOI: http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2025.11.027

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