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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Development of a Thermal Model for Discharge Behavior of MH Hydrogen Storage Vessels

MH 수소저장 장치의 방출시 열거동 모사 수치 모델 개발

  • O, Sang-Kun (Department of Materials Science and Engineering, Seoul National University) ;
  • Cho, Sung-Wook (Korea Institute of Geoscience and Mineral Resouces) ;
  • Yi, Kyung-Woo (Department of Materials Science and Engineering, Seoul National University)
  • Received : 2011.04.01
  • Accepted : 2011.04.22
  • Published : 2011.04.30
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Abstract

Metal hydride alloys are a promising type of material in hydrogen storage applications, allowing for low-pressure, high-density storage. However, while many studies are being performed on enhancing the hydrogen storage properties of such alloys, there has been little research on large-scale storage vessels which make use of the alloys. In particular, large-scale, high-density storage devices must make allowances for the inevitable generation or absorption of heat during use, which may negatively impact functioning properties of the alloys. In this study, we develop a numerical model of the discharge properties of a high-density MH hydrogen storage device. Discharge behavior for a pilot system is observed in terms of temperature and hydrogen flow rates. These results are then used to build a numerical model and verify its calculated predictions. The proposed model may be applied to scaled-up applications of the device, as well as for analyses to enhance future device designs.

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References

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