Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Study on Pill Temperature Control method and Hydrogen Production with 2-step Thermochemical Cycle Using Dish Type Solar Thermal System

접시형 태양열 시스템을 이용한 2단계 열화학 싸이클의 수소 생산과 PID 온도 제어 기법 연구

  • Kim, Chul-Sook (Department of Mechanical Engineering, Graduated School of Inha University) ;
  • Kim, Dong-Yeon (Department of Mechanical Engineering, Graduated School of Inha University) ;
  • Cho, Ji-Hyun (Department of Mechanical Engineering, Graduated School of Inha University) ;
  • Seo, Tae-Beom (Department of Mechanical Engineering, Inha University)
  • 김철숙 (인하대학교대학원 기계공학과) ;
  • 김동연 (인하대학교대학원 기계공학과) ;
  • 조지현 (인하대학교대학원 기계공학과) ;
  • 서태범 (인하대학교 기계공학과)
  • Received : 2013.03.05
  • Accepted : 2013.05.27
  • Published : 2013.06.30
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Abstract

Solar thermal reactor was studied for hydrogen production with a two step thermochemical cycle including T-R(Thermal Reduction) step and W-D(Water Decomposition) step. NiFe2O4 and Fe3O4 supported by monoclinic ZrO2 were used as a catalyst device and Ni powder was used for decreasing the T-R step reaction temperature. Maintaining a temperature level of about $1100^{\circ}C$ and $1400^{\circ}C$, for 2-step thermochemical reaction, is important for obtaining maximum performance of hydrogen production. The controller was designed for adjusting high temperature solar thermal energy heating the foam-device coated with nickel- ferrite powder. A Pill temperature control system was designed based on 2-step thermochemical reaction experiment data(measured concentrated solar radiation and the temperature of foam device during experiment). The cycle repeated 5 times, ferrite conversion rate are 4.49~29.97% and hydrogen production rate is 0.19~1.54mmol/g-ferrite. A temperature controller was designed for increasing the number of reaction cycles related with the amount of produced hydrogen.

Keywords

References

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