A Review of Concentrated Solar Power Based Desalination Technologies: Current Trends, Challenges, and Future Directions

Concentrated solar power (CSP) has emerged as a potential desalination technology from the renewable energy barrel. Unlike the old-fashioned ways that consume a huge amount of fossil fuel, CSP is a sustainable and environmentally friendly alternative. CSP-based desalination systems that employ multi effect distillation, multistage flash and reverse osmosis technologies use the sun's energy to produce potable water from saline sources. This paper gives an overview of the latest developments in CSP-based desalination technologies. It discusses performance, identifies problems and addresses the combination of these systems with various desalination processes. Although there are many studies concerning single CSP systems, many issues of a systematic comparison of different systems and a hybrid integration of different renewable energy technologies as well as long-term sustainability under different environmental conditions are still undiscovered. Additionally, high initial costs and inefficiencies from scaling and environmental factors are major obstacles to widespread adoption. The review brings out key technological, economic and environmental challenges. It provides significant information for the improvement needs in the CSP desalination systems. Novel strategies are introduced, such as the hybrid systems with combination of CSP and other renewable sources, the use of advanced materials to increase efficiency, and optimization of operational parameters. The results highlight the need for further studies of cost reduction techniques, system optimization and large-scale implementation. In conclusion, this paper shows the importance of the CSP-based desalination in solving the water shortage problem in the world. It describes a roadmap for future developments in this field.