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 Performance Characteristic and Safety of Alkaline Water Electrolysis System

알카라인 수전해 시스템 성능 특성 및 안전에 관한 연구

  • 박순애 (한국가스안전공사 가스안전연구원) ;
  • 이은경 (한국가스안전공사 가스안전연구원) ;
  • 이정운 (한국가스안전공사 가스안전연구원) ;
  • 이승국 (한국가스안전공사 가스안전연구원) ;
  • 문종삼 (한국가스안전공사 가스안전연구원) ;
  • 김태완 ((주)주진테크) ;
  • 천영기 ((주)주진테크)
  • Received : 2017.11.22
  • Accepted : 2017.12.29
  • Published : 2017.12.31
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Abstract

Hydrogen is a clean, endlessly produced energy and it is easy to store and transfer. So, hydrogen is regarded as next generation energy. Among various ways for hydrogen production, the way to produce hydrogen by water electrolysis can effectively respond to fossil fuel's depletion or climate change. As interest in hydrogen has increased, related research has been actively conducted in many countries. In this study, we analyzed the performance characteristics and safety of water electrolysis system. In this study, we analyzed the performance characteristics and safety of water electrolysis system. The items for safety performance evaluation of the water electrolysis system were derived through analysis of international regulations, codes, and standards on hydrogen. Also, a prototype of the overall safety performance evaluation station was designed and developed. The demonstration test was performed with a prototype $10Nm^3/h$ class water electrolysis system that operated stably under various pressure conditions while measuring the stack and system efficiency. At 0.7MPa, the efficiency of the alkaline water electrolysis stack and the system that used in this study was 76.3% and 49.8% respectively. Through the GC analysis in produced $H_2$, the $N_2$ (5,157ppm) and $O_2$ (1,646 ppm) among Ar, $O_2$, $N_2$, CO and $CO_2$ confirmed as main impurities. It can be possible that the result of this study can apply to establish the safety standards for the hydrogen production system by water electrolysis.

Keywords

References

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