Adding Alumina Nanoparticles to Enhance Falling Film Evaporation

DOI

10.2991/978-94-6463-708-3_30How to use a DOI?

Keywords

Falling film; Nanoparticles; Thickness; Mass transfer rate

Abstract

Falling film evaporation is widely applied in chemical processes, refrigeration, and seawater desalination, with its heat transfer efficiency playing a crucial role in the energy utilization of these systems. However, unstable liquid film formation and heat transfer bottlenecks during evaporation often limit its performance. In recent years, nanofluids, due to their high thermal conductivity and heat capacity, have emerged as a potential solution to enhance heat transfer efficiency. This study develops a two-dimensional mathematical model based on the Volume of Fluid (VOF) method to analyze the effects of adding 3% aluminum oxide (Al₂O₃) nanoparticles on liquid film thickness, heat transfer coefficient, and evaporation rate under different Reynolds numbers (Re = 600 ~ 2400). The results show that, compared to water, nanofluids significantly increase film thickness and improve heat transfer and evaporation efficiency under higher Re conditions. At Re = 1200, the liquid film temperature reaches its peak, but further increases in Re reduce the evaporation rate due to the growth of film thickness. This study offers new insights and theoretical guidance for optimizing falling film evaporation systems using nanofluids.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xiaoming Cui
PY  - 2025
DA  - 2025/05/09
TI  - Adding Alumina Nanoparticles to Enhance Falling Film Evaporation
BT  - Proceedings of the 2024 10th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2024)
PB  - Atlantis Press
SP  - 265
EP  - 273
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-708-3_30
DO  - 10.2991/978-94-6463-708-3_30
ID  - Cui2025
ER  -