Enabling Dynamic 3D Windmill Evaporator for Continuous Water Desalination, Localized Point Salt Crystallization and...

Area of Science:

• Materials Science
• Environmental Engineering
• Renewable Energy

Background:

• Solar steam generation is a sustainable desalination technique.
• Salt crystallization hinders evaporator efficiency and lifespan.

Purpose of the Study:

• To develop a dynamic 3D windmill evaporator for continuous water desalination.
• To achieve localized salt crystallization and harvesting, improving system durability.

Main Methods:

• Designing a 3D windmill evaporator with adjustable structure and water transport points.
• Controlling salt solution transport and backflow pathways.
• Integrating microgenerators for simultaneous wind energy harvesting.

Main Results:

• Localized salt crystallization at the evaporator blade edge apex, isolated from the evaporation surface.
• Maintained high evaporation rates (2.25 kg m⁻² h⁻¹) and salt collection rates (41.2 g m⁻² h⁻¹) over 420 hours with 20 wt.% NaCl.
• Generated peak voltage of 12 V and evaporation rate of 12.9 kg m⁻² h⁻¹ in outdoor testing with integrated microgenerators.

Conclusions:

• The dynamic 3D windmill evaporator offers a novel solution for efficient and durable solar desalination.
• The integrated system utilizes solar, wind, and terrestrial energy for desalination, electricity generation, and irrigation.
• This approach holds promise for energy conservation and sustainable development.