CO₂의 상변화를 고려한 압력 제어 밸브 모델링 및 검증

국문 초록 (Abstract)

최근 천연 냉매를 이용한 냉동·공조 시스템 연구가 활발히 진행되고 있다. 이 중 이산화탄소는 작동 압력이 상대적으로 높기 때문에 기존 냉동 · 공조 시스템에 비해 압력비가 작다. 또한, 지구 온난화 지수가 낮기 때문에 친환경적이다. CO₂ 냉매를 이용하는 압력 제어 밸브는 냉동·공조 사이클에서 유체가 기체, 액체, 이상 유동 상태인 모든 부분에 사용된다. 그러므로 본 연구에서는 상변화를 고려한 CO₂ 냉매용 압력제어 밸브의 분석 모델을 개발하고, 실험 결과와 비교를 통하여 검증하였다.

다국어 초록 (Multilingual Abstract)

Recently, industrial systems using natural refrigerants have been researched. Among these natural refrigerants, carbon dioxide, owing to its relatively high operating pressure, has a smaller pressure ratio compared with those of existing refrigeration systems. Furthermore, it is eco-friendly because it exhibits low global warming potential. The pressure control valve using CO₂ refrigerant is used for all parts where the fluid is gas, liquid and two-phase states in refrigeration and air-conditioning cycle. Therefore, in this study, an analysis model of pressure control valves using a CO₂ refrigerant was developed considering phase change; this model was verified by comparing them with experimental results.

목차 (Table of Contents)

• 초록
• Abstract
• 1. 서론
• 2. 압력 제어 밸브 모델링
• 3. 시뮬레이션
• 4. 실험
• 5. 결론
• 참고문헌(References)

참고문헌 (Reference)

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