Parameters optimization of hydrogen production from glucose gasified in supercritical water by equivalent cumulative exergy analysis

With the application of cumulative exergy theory based on life cycle analysis and the consideration of environmental impacts of emissions released from the production process, equivalent cumulative exergy analysis is performed for an experimental hydrogen production system where glucose is gasified in supercritical water. The unilateral influence on equivalent cumulative exergy from various factors such as temperature, pressure, concentration of solution, resident time and inner diameter of a reaction tube is analyzed first. In addition, multifactor optimization is conducted using an orthogonal table in which three complicated influence factors including concentration of solution, resident time and inner diameter of a reaction tube are considered. Optimal parameters are obtained to maximize the cumulative degree of perfection, and the results are in general consistent with the experimental results.