Jung-Sik Choi
Korea Maritime and Ocean University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Jung-Sik Choi.
Nuclear Engineering and Technology | 2014
Jung-Sik Choi; Youngjoon Shin; Ki-Young Lee; Yong-Sup Yun; Jae-Hyuk Choi
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 for investigating thermodynamic/hydrodynamic characteristics and material properties. This analysis was conducted to obtain reliable continuous operation parameters; in particular, a thermal analysis was performed on the bellows box and bellows at amplitudes and various frequencies (0.1, 0.5, and 1.0 Hz). However, the high temperatures and strongly corrosive operating conditions 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 material for the transfer of sulfuric acid. We also carried out a CFD analysis of the design. The CFD results indicated that the maximum applicable temperature of PTFE is about 533 K (260 °C), even though its melting point is around 600 K. This result implies that the PTFE is a potential material for the sulfuric acid transfer system. The CFD simulations also confirmed that the sulfuric acid transfer system was designed properly for this particular investigation.
International Journal of Automotive Technology | 2012
Jun-Shik Choi; Seong Su Kim; Sungsoo Rhim; Jung-Sik Choi
Journal of the Korean Society of Marine Engineering | 2013
Jung-Sik Choi; Jaehyuk Choi
International Journal of Automotive Technology | 2013
S. K. Park; S. Y. Choe; Tae-Woo Lim; Jong-Su Kim; D. H. Seo; Jung-Sik Choi
Journal of the Korean Society of Marine Environment and Safety | 2013
Jung-Sik Choi; Sang-Deuk Lee; Seong-Yun Kim; Kyoung-Woo Lee; Kang-Woo Chun; Youn-Woo Nam; Kyun-Sik Jung; Sang-Kyun Park; Jaehyuk Choi
Journal of the Korean Society of Marine Environment and Safety | 2012
Jaehyuk Choi; Jae-Hyun Kim; Woo-Jung Shin; Jung-Sik Choi; Kyoung-Boo Ryu; Sang Min Lee; Seol-Hyun Park; Joo-Hee Lee; Tae-Woo Lim
International Journal of Hydrogen Energy | 2015
Jung-Sik Choi; Jae-Hyuk Choi
Journal of the Korean Society of Marine Environment and Safety | 2013
Jung-Sik Choi; Sang-Deuk Lee; Kyoung-Woo Lee; Kang-Woo Chun; Youn-Woo Nam; Seok-Hun Yoon; Jaehyuk Choi
Journal of the Korean Society of Marine Environment and Safety | 2012
Sang-Goo Han; Jung-Sik Choi; Ro-Seong Park; Dae-Hun Kim; Kyoung-Boo Ryu; Kang-Woo Chun; Seok-Hun Yoon; Jaehyuk Choi
Journal of the Korean Society of Marine Environment & Safety | 2014
Jung-Sik Choi; Jaehyuk Choi