원문정보
초록
영어
In order to store liquid hydrogen that has recently drawn attention as an eco-friendly energy source, a vacuum-insulated tank is required. However, even if a vacuum-insulated structure is applied, evaporation occurs due to heat leak by room temperature and it increases the pressure of the tank. In general, the pressure is relieved through a vent for stable storage. This method has problems of economic loss and explosion of flammable hydrogen. Therefore, zero boil-off operation is required to re-liquefy the evaporated gas. Zero boil-off (ZBO) operation in large-capacity storage tank is possible using a gas helium circulation cooling system and a condensation pipe. In this paper, the condensation pipe of a 7m3 ZBO liquid hydrogen storage tank combined with a gas helium circulation cooling system was designed and the simulation of the level change of the storage tank according to the operation condition of the gas helium circulation cooling system was performed using the cryogenic thermal fluid program, Thermal Desktop.
목차
1. 서론
2. 7m3 ZBO 액체수소 저장탱크의 응축배관 설계
2.1. 기체 헬륨 순환 냉각시스템이 적용된 ZBO 저장탱크
2.2. 응축배관의 열전달 및 압력강하 계산
2.3. 저장탱크 내 응축배관 구성
3. 해석을 통한 응축배관 검증
3.1. 응축배관 내 헬륨 분배 유동해석
3.2. 기체 헬륨 순환 냉각시스템 공정해석
4. 기체 헬륨 순환 냉각시스템 운전에 따른 수위 변화해석
4.1. ZBO 저장탱크 수위 변화 해석 모델
4.2. 냉각시스템 운전에 따른 수위 변화 결과
5. 결론
ACKNOWLEDGMENT
REFERENCES