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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Flash atomisation of saltwater through convergent-divergent nozzles: implications for marine cloud brightening
Journal of aerosol science, Vol.191, pp.1-10
01/2026
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Abstract
The potential feasibility of Marine Cloud Brightening (MCB) is currently limited by the efficiency and practicalities of technologies to generate the required flux of correctly sized aerosol particles. We studied the aerosols formed by the spray from superheated salt water through two convergent-divergent (de Laval) nozzles between 5 nm and 50 μm dry aerosol diameter. We found that they do not produce more particles useful for MCB (30-100 nm) than currently deployed effervescent nozzles. A significant portion of the mass flow through these nozzles was contained in particles larger than 2 μm. However, the production rate from these de Laval nozzles appeared unaffected by the reduction of throat diameter despite a fourfold reduction in water flow and thus power usage.
Details
- Title
- Flash atomisation of saltwater through convergent-divergent nozzles: implications for marine cloud brightening
- Creators
- Chris Medcraft - Southern Cross UniversityMohammadreza Sedighi - Southern Cross UniversityLuke Harrison - Southern Cross UniversityWayne A. Davies - Southern Cross UniversityZoran Ristovski - Queensland University of TechnologyDaniel P. Harrison - Southern Cross University
- Publication Details
- Journal of aerosol science, Vol.191, pp.1-10
- Publisher
- Elsevier Ltd; London
- Grant note
- This work was undertaken for the Reef Restoration and Adaptation Program (Cooling and Shading sub-program) funded by the partnership between the Australian Government’s Reef Trust and the Great Barrier Reef Foundation.
- Identifiers
- 991013314521102368
- Copyright
- © 2025 The Authors.
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre; Science
- Language
- English
- Resource Type
- Journal article