인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 저자정보
피인용 0
초록·키워드
A set of thermodynamic properties of R-32 is calculated and its refrigeration performance is evaluated. The advantages of R-32 are as follows. (1) The refrigeration effect of R-32 is superior to that of R-22 (2) The volumetric capacity of R-32 is superior to that of R-22. (3) The average two-phase heat transfer coefficient of R-32 is about 20-40% higher than that of R-22. The disadvantages of R-32 are as follows (1) The vapor pressure of R-32 is about 50% higher than that of R-22. So the condensing unit for R-32 should be reinforced to withstand the high pressure and it must require more compressor power. The COP of the R-32 system is 10-30% lower than that of R-22 (2) The compressor discharging temperature rises as high as 130-150℃. It can result in mechanical failure of the compressor due to the breakdown of lubricant.
It is recommended that the current compressors be redesigned to meet high pressure and to cool the discharging gas of high temperature in order to use R-32 as a pure alternative refrigerant. Also it is suggested that refrigerant mixtures be developed in the direction of keeping the advantage of the volumetric capacity and the refrigeration effect and of reducing the high vapor pressure.
It is recommended that the current compressors be redesigned to meet high pressure and to cool the discharging gas of high temperature in order to use R-32 as a pure alternative refrigerant. Also it is suggested that refrigerant mixtures be developed in the direction of keeping the advantage of the volumetric capacity and the refrigeration effect and of reducing the high vapor pressure.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
UCI(KEPA) : I410-ECN-0101-2009-553-015260545
