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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
- 학술저널
- 저자정보
- 발행연도
- 2022.9
- 수록면
- 420 - 425 (6page)
- DOI
- 10.6110/KJACR.2022.34.9.420
이용수
이 논문의 연구 히스토리 (4)
2022
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초록· 키워드
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The condensation heat transfer coefficients of R-1234ze(E) were experimentally measured. The test facility comprised a test part, a preheating part, and a condensing part. The test section of copper tube with a diameter of 1/2 inch and a length of 2 m was installed, inside a PVC pipe, which was cooled by brine. A thermocouple was attached to the surface of the copper tube by soldering, and the surface temperature of the copper tube was measured for each section. Tests were performed under the conditions of a mass flow rate of 300-500 kg/㎡s and a reduced condensation pressure of 0.5-0.7. The condensation heat transfer coefficient of the R-1234ze(E) refrigerant decreased by 19%, as the reduced condensation pressure increased from 0.5 to 0.6 or 0.6 to 0.7, and the pressure drop also decreased as the reduced pressure increased. The predictions by the Cavallini correlation and the Traviss correlation showed the mean deviation for the condensation heat transfer coefficients by 91.8% and 61.6% of the experimental results, respectively. Thus, the existing correlations for the condensation heat transfer coefficients can be used, by considering the decreasing rate of 19% with increase of reduced pressure under the high reduced pressure conditions.
목차
Abstract
1. 연구배경 및 목적
2. 실험장치 및 데이터정리
3. 실험 결과
4. 결론
References
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