Exergy analysis of methane steam reformer utilizing steelmaking waste heat

Nobuhiro Maruoka, Hadi Purwanto, Tomohiro Akiyama

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)


    System analysis was conducted on a proposed combined system for methane steam reforming comprising conventional hydrogen production and waste heat recovery from steelmaking. Operating data for a conventional methane steam reforming system were collected and analyzed. The results showed that the conventional system utilized only 60% of the natural gas as raw material and the rest is consumed for supplying the reaction heat for methane steam reforming. On the basis of this data, the proposed system was evaluated on five factors-natural gas consumption, enthalpy flow, CO2 emission, cost, and exergy loss. For the proposed system, the factors were only 59.6%, 59.7%, 62.8%, 86.5%, and 65.8% of those of the conventional system, respectively. This supports the feasibility of hydrogen production from recovered waste heat. Furthermore, the proposed system is expected to contribute to the production of 'green' hydrogen that incurs less CO2 emission.

    Original languageEnglish
    Pages (from-to)1311-1318
    Number of pages8
    JournalIsij International
    Issue number9
    Publication statusPublished - 2010


    • Exergy analysis
    • Hydrogen production
    • Steam reforming
    • Steelmaking
    • System evaluation
    • Waste heat recovery

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry


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