Comparison study on life-cycle costs of different trams powered by fuel cell systems and others

Abstract

Proton exchange membrane fuel cells have shown great promise for powering trams. Hydrogen refueling stations and a fuel-cell system incur initial vehicle costs that are higher than a pantograph/catenary tram or contact-rail tram. In this paper, a life-cycle cost analysis is conducted for five trams: a pantograph/catenary tram, a contact-rail tram, and three fuel-cell hybrid trams. Characteristics of fuel-cell hybrid trams are compared with contemporary transit systems. A simplified life-cycle cost model, including costs for the initial infrastructure and powertrains, daily operation and power plant replacement, is proposed and calculated with parameters. A sensitivity analysis is also performed. Results show that the life-cycle costs of trams are almost proportional to the rail-line length. The initial costs of a fuel-cell hybrid tram are less than a pantograph/catenary tram or contact-rail tram. The life-cycle costs of fuel-cell hybrid trams are highly dependent on combination factors of hydrogen price, fuel-cell price and battery price. Charging facilities for fuel-cell hybrid trams are favorable when hydrogen price is in a high level. Greenhouse gas emissions of trams are almost equivalent.