냉각에 따른 가스가 충전된 벨로우즈의 특성변화

다국어 초록 (Multilingual Abstract)

Gas-charged bellows demand flow control mechanism in the Joule-Thomson(J-T) refrigerator are typically an assembly of a cylindrical bellows that is sealed at both ends and pressurized with a gas. The gas pressure in the bellows increase or decrease as the bellows is heated or cooled, which causes the bellows to expand or contract relative the fixed end and to open or restrict the nozzle. The gas-charged bellows can be adjusted to provide a small excess of the refrigeration at the cold end of the refrigerator to assure a presence of liquid at the cold end. The charged gas and initial pressure are chosen for the desired operating temperature and pressure. In this study, characteristics of a nitrogen gas-charged bellows during cool-down process were investigate by numerical analysis. Some typical results of the thermodynamic analysis is presented.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 해석 모델
• 3. 결과 및 고찰
• 4. 결론
• 참고문헌