Waste Heat Recovery System through Methanol Steam Reforming with Absorption Heat Pump

• KAWASAKI Shunsuke

  Department of Mechanical and Control Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology

• WIJAYA Willy Yanto

  Department of Mechanical and Control Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology

• WATANABE Hirotatsu

  Department of Mechanical and Control Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology

• OKAZAKI Ken

  Department of Mechanical and Control Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology

Bibliographic Information

Other Title

• 昇温型吸収ヒートポンプとメタノール水蒸気改質を組み合わせた廃熱回収システムの提案

Abstract

Through the methanol steam reforming (MSR), the energy of low temperature waste heat (100-150°C) can be recovered into that of hydrogen. However, actual MSR requires over 200°C to enable the high conversion of methanol into hydrogen in terms of reaction kinetics. Thus, in this research, a waste heat recovery system through MSR with absorption heat pump (AHP) was proposed. The role of the AHP is to enhance the temperature level of the waste steam up to 230°C, which is used for the MSR. The endothermic reaction of the MSR decreases the temperature of the MSR reactor. Therefore, high temperature steam should be used not only for the MSR reaction but also for heating the MSR reactor. To evaluate the performances of the system, "enthalpy enhancement factor" was defined. As a result, the recovered enthalpy of the waste heat was almost 4.5 times as much as the required work for the AHP when the waste heat temperature was 150°C and S/C ratio was 4.0.

Journal

• Journal of the Japan Institute of Energy

  Journal of the Japan Institute of Energy 90 (12), 1152-1158, 2011

  The Japan Institute of Energy

Keywords

• Methanol steam reforming
• Absorption heat pump
• Waste heat

Details

• CRID: 1390282679334457344
• NII Article ID: 130004540970
• DOI: 10.3775/jie.90.1152
• ISSN: 18826121
• ISSN: 09168753
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed