Optimal design of the multi-bed storage system in fusion fuel cycle under periodic demand based on the state-task network representation

This paper proposes an optimization model for the design of the multi-bed storage system which is a main fueling facility in fusion fuel cycle of nuclear fusion. The objective of the problem is to minimize total number of equipment, getter beds and buffer vessels, in the multi-bed storage system under periodic demand. The mathematical model is formulated as a mixed integer nonlinear programming problem based on the State Task Network (STN). To simplify the problem, team and cycle-based operation is assumed. Moreover, to ensure safety of the design, a worst-case operation condition is provided. The proposed model is applied to the inductive operation mode. With parametric sensitivity analysis, the model is expected to provide many useful insights to determine the number of units and to guide future research.