A 15-We portable power system is being developed for the US Army that consists of a hydrogen-generating fuel reformer coupled to a proton-exchange membrane fuel cell. In the first phase of this project, a methanol steam reformer system was developed and demonstrated. The reformer system included a combustor, two vaporizers, and a steam reforming reactor. The device was demonstrated as a thermally independent unit over the range of 14-80 Wt output. Assuming a 14-day mission life and an ultimate 1-kg fuel processor/fuel cell assembly, a base case was chosen to illustrate the expected system performance. Operating at 13 We, the system yielded a fuel processor efficiency of 45% (LHV of H2 out/LHV of fuel in) and an estimated net efficiency of 22% (assuming a fuel cell efficiency of 48%). The resulting energy density of 720 Wh/kg is several times the energy density of the best lithium-ion batteries. Some immediate areas of improvement in thermal management also have been identified, and an integrated fuel processor is under development. The final system will be a hybrid, containing a fuel reformer, a fuel cell, and a rechargeable battery. The battery will provide power for start-up and added capacity for times of peak power demand.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Development of a soldier-portable fuel cell power system. I. A bread-board methanol fuel processor


    Beteiligte:
    Palo, D.R. (Autor:in) / Holladay, J.D. (Autor:in) / Rozmiarek, R.T. (Autor:in) / Guzman-Leong, C.E. (Autor:in) / Yong Wang (Autor:in) / Hu, Jianli (Autor:in) / Chin, Ya-Huei (Autor:in) / Dagle, R.A. (Autor:in) / Baker, E.G. (Autor:in)

    Erschienen in:

    Journal of Power Sources ; 108 , 1-2 ; 28-34


    Erscheinungsdatum :

    2002


    Format / Umfang :

    7 Seiten, 20 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Fuel Processor for an Indirect Methanol Fuel Cell Vehicle

    Eggert, Anthony / Hauer, Karl-Heinz / Sundaresan, Meena et al. | SAE Technical Papers | 2000


    Fuel processor for an indirect methanol fuel cell vehicle

    Ramaswamy,S. / Sundaresan,M. / Hauer,K.H. et al. | Kraftfahrwesen | 2000


    Fuel processor for an indirect methanol fuel cell vehicle

    Ramaswamy, S. / Sundaresan, M. / Hauer, K.H. et al. | Tema Archiv | 2000