Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Study on Hydrogen Production with High Temperature Solar Heat Thermochemical Cycle by Heat Recovery

열회수에 따른 고온 태양열 열화학 싸이클의 수소 생산에 관한 연구

  • Cho, Ji-Hyun (Department of Mechanical Engineering, Inha University) ;
  • Seo, Tae-Beom (Department of Mechanical Engineering, Inha University)
  • Received : 2017.01.11
  • Accepted : 2017.04.24
  • Published : 2017.04.30
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Abstract

Two-step water splitting thermochemical cycle with $CeO_2/ZrO_2$ foam device was investigated by using a solar simulator composed of 2.5 kW Xe-Arc lamp and mirror reflector. The hydrogen production of $CeO_2/ZrO_2$ foam device depending on heat recovery of Thermal-Reduction step and Water-Decomposition step was analyzed, and the hydrogen production of $CeO_2/ZrO_2$ and $NiFe_2O_4/ZrO_2$ foam devices was compared. Resultantly, the quantity of hydrogen generation increased by 52.02% when the carrier gas of Thermal-Reduction step is preheated to $200^{\circ}C$ and, when the $N_2/steam$ is preheated to $200^{\circ}C$ in the Water-Decomposition step, the quantity of hydrogen generation increased by 35.85%. Therefore, it is important to retrieve the heat from the highly heated gases discharged from each of the reaction spaces in order to increase the reaction temperature of each of the stages and thereby increasing the quantity of hydrogen generated through this.

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References

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