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핵비등이탈 현상 재구성을 위한 조건부 적대적 생성 신경망 활용
나웅진(UngJin Na),최문희(Moonhee Choi),이석용(SeockYong Lee),박세현(SeHyeon Park),조항진(HangJin Jo) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.11
Understanding the nuances of the departure from nucleate boiling (DNB) is paramount for ensuring the safety and functionality of high thermal flux systems. The DNB, characterized by a sudden drop in heat transfer, remains a challenge to pinpoint due to its intricate nature. Many techniques aim to decode these complexities, but obtaining detailed data often demands excessive resources. This study presents a novel approach using conditional generative adversarial networks (cGANs) to reinterpret thermal data during DNB. We utilize paired images: total reflection visualizations and infrared thermometry from flow boiling experiments. Our method not only reveals links between phase interface dynamics and thermal patterns but also streamlines traditionally labor-intensive experimental setups related to infrared imaging.
차세대 원자로와 마이크로 웨이브를 이용한 2단계 열 화학적 물 분해 방식의 경제성 분석
이석용(SeockYong Lee),나웅진(UngJin Na),조항진(HangJin Jo) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The climate emergency emerges as a global problem. The transition from the existing carbon economy to a hydrogen economy is emerging to solve the problem. This study focuses on the two-step thermochemical water splitting method suitable for large-scale green hydrogen production, which is essential for the upcoming hydrogen economy. Economic assessment is conducted considering a High-temperature gas-cooled reactor as the primary heat source in consideration of that microwave could induce a significant change in the electrical conductivity of metal oxide at a low-temperature range. Ceria or (FeMgCoNi)Ox is selected as a catalyst. The change of LCOH (Levelized cost of hydrogen) according to microwave power and operating conditions was quantitatively evaluated. The system with an advanced nuclear power plant showed a better performance in that an advanced nuclear power plant has stable and continuous operating compared with a solar power system. The results opened up the possibility of commercialization of the two-step thermochemical water-splitting method.
차세대 원자로와 마이크로 웨이브를 이용한 2단계 열 화학적 물 분해 방식의 경제성 분석
이석용(SeockYong Lee),나웅진(UngJin Na),조항진(HangJin Jo) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The climate emergency emerges as a global problem. The transition from the existing carbon economy to a hydrogen economy is emerging to solve the problem. This study focuses on the two-step thermochemical water splitting method suitable for large-scale green hydrogen production, which is essential for the upcoming hydrogen economy. Economic assessment is conducted considering a High-temperature gas-cooled reactor as the primary heat source in consideration of that microwave could induce a significant change in the electrical conductivity of metal oxide at a low-temperature range. Ceria or (FeMgCoNi)Ox is selected as a catalyst. The change of LCOH (Levelized cost of hydrogen) according to microwave power and operating conditions was quantitatively evaluated. The system with an advanced nuclear power plant showed a better performance in that an advanced nuclear power plant has stable and continuous operating compared with a solar power system. The results opened up the possibility of commercialization of the two-step thermochemical water-splitting method.