지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 최종욱
- 발행연도
- 2015
- 저작권
- 순천대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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Computational thermal-fluid analysis has been performed to figure out the
characteristics of heat transfer in a thermosyphon with the aspect ratio of it and
the filling ratio of working fluid. The computational results have been compared
with experimental results and then the reasonable results have been obtained with
the fluid visualization. The thermal resistance and the convective heat transfer
coefficient have been calculated with the aspect ratio of thermosyphon and the
filling ratio of working fluid, respectively. As a result, the thermal resistance is
decreased by the increasing length of evaporator. However, the variation of
length of condenser is almost independent on the thermal resistance. In order to
make the higher heat transfer performance of thermosyphon, the filling ratio of
working fluid needs over 75%. In addition, Nusselt numbers show approximately
275 and 304 in the evaporator and the condenser, respectively.
characteristics of heat transfer in a thermosyphon with the aspect ratio of it and
the filling ratio of working fluid. The computational results have been compared
with experimental results and then the reasonable results have been obtained with
the fluid visualization. The thermal resistance and the convective heat transfer
coefficient have been calculated with the aspect ratio of thermosyphon and the
filling ratio of working fluid, respectively. As a result, the thermal resistance is
decreased by the increasing length of evaporator. However, the variation of
length of condenser is almost independent on the thermal resistance. In order to
make the higher heat transfer performance of thermosyphon, the filling ratio of
working fluid needs over 75%. In addition, Nusselt numbers show approximately
275 and 304 in the evaporator and the condenser, respectively.
목차
Ⅰ. 서론 ································································································································ 1Ⅱ. 본론 ································································································································ 41. 계산모델 ······················································································································ 41) 지배 방정식 ·········································································································· 4(1) 연속 방정식 ··································································································· 4(2) 운동량 방정식 ······························································································· 5(3) 에너지 방정식 ······························································································· 62) 상변화 과정에서 질량 및 열전달 ···································································· 72. 수치해석 검증 ············································································································ 93. 열사이펀 형상비와 충전율의 변화 ······································································ 214. 결과 및 고찰 ············································································································ 251) 열사이펀의 형상비 변화 ·················································································· 252) 작동유체의 충전율 변화 ·················································································· 28Ⅲ. 결론 ······························································································································ 32Ⅳ. 참고문헌 ······················································································································ 33
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