Study on the control technique for the heat transportation system using metal hydride

수소저장합금을 이용한 열수송시스템 제어기술 연구

  • Sim, K.S. (Dept. of Alternative Energy, Korea Institute of Energy Research) ;
  • Kim, J.W. (Dept. of Alternative Energy, Korea Institute of Energy Research) ;
  • Kim, J.D. (Dept. of Alternative Energy, Korea Institute of Energy Research) ;
  • Myung, K.S. (Dept. of Alternative Energy, Korea Institute of Energy Research)
  • 심규성 (한국에너지기술연구소 대체에너지연구부) ;
  • 김종원 (한국에너지기술연구소 대체에너지연구부) ;
  • 김정덕 (한국에너지기술연구소 대체에너지연구부) ;
  • 명광식 (한국에너지기술연구소 대체에너지연구부)
  • Published : 2000.03.15

Abstract

The heat transportation from a complex of industry to a rural area needs more efficient method because the distance between them is usually more than 10km. Conventional heat transportation using steam or hot water via pipe line has limits in transportation distance (about 3~5 km) because of the heat loss and frictional loss in the pipe line. Metal hydride can absorb or discharge hydrogen through exothermic or endothermic reaction. After releasing hydrogen from metal hydride by means of the waste heat from industry, we can transport this hydrogen to urban area via pipe line. In urban areas, other metal alloy reacts with this hydrogen to form metal hydride and produces heat for heating. Cool heat is also obtained if it is possible to use metal hydride with low reaction temperature. Therefore, metal hydride can be used as a media for transportation and storage of heat. $MmNi_{4.5}Al_{0.5}Zr_{0.003}$, $LaNi_5$, $Zr_{0.9}Ti_{0.1}Cr_{0.6}Fe_{1.4}$, $MmNi_{4.7}Al_{0.1}Fe_{0.1}V_{0.1}$ alloys were selected for this purpose and the properties of those metal hydrides were discussed. The design and control techniques were proposed and discussed for this heat transportation system using metal hydride.

Keywords