This article details comprehensive energy and exergy analyses of the sulfuric acid decomposition process of the sulfur-iodine (SI) thermochemical cycle for hydrogen production. Energy and exergy efficiencies of the proposed process were evaluated over a variety of reaction temperatures and pressures. At an atmospheric temperature of 25 °C, the calculated values of exergy destruction of the H2SO4 decomposer ranged between 157 kJ/mol and 360 kJ/mol over reaction temperatures of 800-1000 °C and pressures between 1 and 50 atm. It was shown that the exergy efficiency of the H2SO4 decomposer improved with an increase in reaction temperature, while reaction pressure had a negative effect on exergy efficiency.
Bibliographical noteFunding Information:
J.P. and J.H.C. contributed equally to this work. This study was supported in part by the Ministry of Education of Korea by the BK21 program at Yonsei University, and the Nuclear Research & Development Program funded by the Ministry of Education, Science and Technology of Korea .
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology