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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제46권 제3호
발행연도
2014.1
수록면
363 - 372 (10page)

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In this study, we proposed a newly designed sulfuric acid transfer system for the sulfur-iodine (SI) thermochemical cycle. The proposed sulfuric acid transfer system was evaluated using a computational fluid dynamics (CFD) analysis forinvestigating thermodynamic/hydrodynamic characteristics and material properties. This analysis was conducted to obtainreliable continuous operation parameters; in particular, a thermal analysis was performed on the bellows box and bellows atamplitudes and various frequencies (0.1, 0.5, and 1.0 Hz). However, the high temperatures and strongly corrosive operatingconditions of the current sulfuric acid system present challenges with respect to the structural materials of the transfer system. To resolve this issue, we designed a novel transfer system using polytetrafluoroethylene (PTFE, Teflon®) as a bellows materialfor the transfer of sulfuric acid. We also carried out a CFD analysis of the design. The CFD results indicated that the maximumapplicable temperature of PTFE is about 533 K (260 °C), even though its melting point is around 600 K. This result impliesthat the PTFE is a potential material for the sulfuric acid transfer system. The CFD simulations also confirmed that the sulfuricacid transfer system was designed properly for this particular investigation.

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