메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한설비공학회 International Journal of Air-Conditioning and Refrigeration International Journal of Air-Conditioning and Refrigeration Vol.16 No.4
발행연도
2008.12
수록면
117 - 123 (7page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
The present study is directed at flow and heat transfer of CO₂ and oil mixtures in a circular tube. PAG and POE oils are considered in this study. Flow characteristics of CO₂ and oil mixtures have been investigated by flow visualization. Pressure drop has been measured in the range of operating mass flow rate from 0.1 to 0.4 ㎏/min in a circular tube. Heat transfer characteristics of CO₂/oil mixtures have been investigated using a counterflow heat exchanger. In case of pure liquid CO₂ as well as CO₂ and POE mixtures, flow are seen to be uniform so that CO₂ and POE oil are still miscible even at flowing state. However, it is found that CO₂ and PAG are not miscible. Pressure drop of CO₂/PAG mixtures are much higher than that of CO₂/POE mixtures as well as pure CO₂ at a fixed mass flow rate. As the concentration of POE oil is increased from 0 to 5 wt%, pressure drop is increased. However, heat transfer rate and heat transfer coefficient of CO₂/POE mixtures are much higher than that of CO₂/PAG mixtures. The f-factor correlation and Nusselt number correlation for CO₂/POE oil mixtures are suggested in this paper.

목차

Abstract
1. Introduction
2. Experimental system
3. Result and discussion
4. Conclusions
Acknowledgment
References

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0