The payback period of a fuel cell auxiliary power unit for a large track was discussed under the present conditions in Japan. However, the calculation is complex since the calculation includes various parameters and iteration. In the present study, the approximation of the payback period has been proposed and compared with the exact solution. The results have shown the both are in good agreement.
J-STAGEがリニューアルされました！https://www.jstage.jst.go.jp/browse/-char/ja/
