A novel solar-driven energy conversion system using ocean carbon dioxide for generating useful outputs with hydrogen and storage solutions

The presently developed integrated system is focused on a solar energy-driven integrated plant with various energy storage benefits, which is designed to generate electricity, freshwater, hydrogen, oxygen, carbon dioxide extraction, heating, and cooling. The proposed system comprises concentrated panels with ocean hot and cold storage, an ocean thermal energy conversion system with cooling, a multi-effect desalination system with freshwater storage, supercritical and transcritical carbon dioxide-based power plants, and a novel electro-cation exchange reactor, designed and tested experimentally, with compressed hydrogen storage and oxygen storage. The analysis of the system is conducted based on thermodynamic evaluations. The monthly CO 2 extraction ranges from 120 kg to 160 kg, while the monthly hydrogen production varies between 80 kg and 110 kg, depending on operational and seasonal conditions. • The integrated system is designed to generate hydrogen and extract carbon dioxide. • The system is tested, modeled, and analyzed in depth by using EES and SAM. • The monthly CO 2 extraction ranges from 120 kg to 160 kg.