Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Efficiency of Hydrogen-Oxygen Mixture Gas Generation Stack

수소-산소 혼합가스 발생 스택의 효율 연구

  • Lee, Sang-Ho (Hydrogen Energy Research Group, Korea Institute of Energy Research) ;
  • Moon, Il-Sik (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Chang-Hee (Hydrogen Energy Research Group, Korea Institute of Energy Research) ;
  • Kang, Kyoung-Soo (Hydrogen Energy Research Group, Korea Institute of Energy Research) ;
  • Park, Chu-Sik (Hydrogen Energy Research Group, Korea Institute of Energy Research) ;
  • Bae, Ki-Kwang (Hydrogen Energy Research Group, Korea Institute of Energy Research)
  • 이상호 (한국에너지기술연구원 열화학수소연구단) ;
  • 문일식 (순천대학교 화학공학과) ;
  • 김창희 (한국에너지기술연구원 열화학수소연구단) ;
  • 강경수 (한국에너지기술연구원 열화학수소연구단) ;
  • 박주식 (한국에너지기술연구원 열화학수소연구단) ;
  • 배기광 (한국에너지기술연구원 열화학수소연구단)
  • Published : 2006.12.15
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Abstract

The characteristics of hydrogen-oxygen mixture gas generation stack was experimentally studied in terms of efficiency. For this purpose, the mixture gas generation stack was fabricated by connecting 7 cells in series following the Tero Ranta report. In order to avoid the instrument inaccuracy, all measuring equipments were re-tested and calibrated by Korea Laboratory Accreditation Scheme (KOLAS) certified laboratories. Since the amount of produced gas is most crucial in determining the efficiency, two gas collecting methods such as bottle trap method and wet gas meter method were adopted. From the experimental results, it was found that both KOH fume and steam evaporated along with hydrogen-oxygen mixture gas, and these by-product gases could cause the misestimation of the stack efficiency. The current, voltage, and energy efficiencies of the hydrogen-oxygen mixture gas generation stack was evaluated based upon the stack efficiency calculation method summarized in this work.

Keywords

References

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