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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제51권 제1호
발행연도
2019.1
수록면
214 - 220 (7page)

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Thermochemical cycles have been predominantly used for energy transformation from heat to storedchemical free energy in the form of hydrogen. The thermochemical cycle based on uranium (UTC),proposed by Oak Ridge National Laboratory, has been considered as a better alternative compared toother thermochemical cycles mainly due to its safety and high efficiency. UTC process includes threesteps, in which only the first step is unique. Hydrogen production apparatus with hectogram reactantswas designed in this study. The results showed that high yield hydrogen was obtained, which wasdetermined by drainage method. The results also indicated that the chemical conversion rate ofhydrogen production was in direct proportion to the mass of Na2CO3, while the solid product wasNa2UO4, instead of Na2U2O7. Nevertheless the thermochemical cycle used for hydrogen generation can beclosed, and chemical compounds used in these processes can also be recycled. So the cycle with Na2UO4as its first reaction product has an advantage over the proposed UTC process, attributed to the fast reactionrate and high hydrogen yield in the first reaction step.

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