Review of solar-powered reverse osmosis desalination systems: structure, performance, and efficiency

Area of Science:

• Environmental Science
• Renewable Energy Technologies
• Water Resource Management

Background:

• Global water scarcity is exacerbated by climate change and inadequate resource management.
• Rising sea levels pose threats to coastal areas and ecosystems, necessitating freshwater security solutions.
• Solar desalination presents a viable technology for producing potable water from saline sources.

Purpose of the Study:

• To review recent advancements in solar desalination technologies.
• To assess improvements in performance, efficiency, and sustainability of solar desalination systems.
• To evaluate the feasibility of integrating waste heat and different energy sources in desalination.

Main Methods:

• Critical review of recent scientific literature on solar desalination technologies.
• Analysis of performance data and efficiency metrics for various solar desalination approaches.
• Evaluation of economic and practical considerations for different system configurations.

Main Results:

• Solar desalination systems provide a clean, cost-effective alternative, especially for arid regions.
• Integrating waste heat can reduce costs and boost efficiency in desalination processes.
• Photovoltaic (PV) reverse osmosis (RO) is currently operational, but battery integration is impractical; solar thermal (PTC-ORC-RO) shows promise but requires further development.

Conclusions:

• Solar desalination technologies are advancing, offering sustainable freshwater solutions.
• PV RO systems are viable, while solar thermal desalination needs further research for large-scale deployment.
• Optimizing energy integration and reducing costs are key for the future of solar desalination.