Abstract
In the Sulfur-Iodine (SI) water splitting cycle hydrogen is produced via the decomposition of Hydrogen-Iodide (HI) and sulfuric acid (H2SO4). These reactions proceed at around 400 °C and 850 °C respectively. A high temperature heat source, such as nuclear reactor heat, is required for the SI cycle. Since both the nuclear plant and the SI cycle plant are coupled through heat exchangers, any transients for either plant will affect the entire system. For a nuclear reactor system, it is especially important to understand the transient behavior of the SI cycle during a reactor startup or an emergency shutdown. A simplified transient model of the SI cycle, which can be coupled to heat from a nuclear plant, has been developed. Preliminary results from both steady state and transient calculations are presented in this paper.
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