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
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.12
- 수록면
- 86 - 93 (8page)
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초록· 키워드
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Increased demand of power-transformer’s capacity inevitably results in an excessive temperature rise of transformer components, which in turn requires improved radiator design. In this paper, numerical simulation of the cooling performance of an ONAN-type (Oil Natural Air Natural) radiator surrounded by air was performed by using CFX. The natural convection of the air was treated with the full-model. The present parametric study considers variation of important variables that are expected to affect the cooling performance. We changed the pattern and cross-sectional area of flow passages, the fin interval, the flow rate of oil and shape of flow passages. Results show that the area of flow passage, the fin interval, the flow rate of oil and shape of flow passages considerably affect the cooling performance whereas the pattern of flow passages is not so much influential. We also found that for the case of the fin interval smaller than the basic design, the temperature drop decreases while a larger interval gives almost unchanged temperature drop, indicating that the basic design is optimal. Further, as the flow rate of oil increases, the temperature drop slowly decreases as expected. On the other hand, when the shape of flow passages are changed, temperature drop is increased, indicating that the cooling performance is enhanced thereupon.
목차
1. 서론
2. 수치 해석
3. 결과 및 토의
4. 결론
References
참고문헌 (9)
참고문헌 신청
Seong, J.K. / 2012 / Evaluation of the cooling capacity for oil immersed transformer radiator using numerical analysis / Proc. KSME Fall Conf. :61~65
www.hscsp.com/down_1.htm
Shim, H.S / 2011 / A study of temperature analysis considered characters of power transformer’s radiator / Proc. KIEE Fall Conf. :118~120
Kim, H.J / 2007 / Cooling characteristic analysis of transformer’s radiator / Proc. KSME Spring Conf. :1032~1037
Kim, M.G. / 2013 / Prediction and evaluation of the cooling performance of radiators used in oil-filled power transformer applications with non-direct and direct-oil-forced flow / Exp. Therm. Fluid Sci. 44:392~397
www.hscsp.com/down_1.htm
Shim, H.S / 2011 / A study of temperature analysis considered characters of power transformer’s radiator / Proc. KIEE Fall Conf. :118~120
Kim, H.J / 2007 / Cooling characteristic analysis of transformer’s radiator / Proc. KSME Spring Conf. :1032~1037
Kim, M.G. / 2013 / Prediction and evaluation of the cooling performance of radiators used in oil-filled power transformer applications with non-direct and direct-oil-forced flow / Exp. Therm. Fluid Sci. 44:392~397
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UCI(KEPA) : I410-ECN-0101-2016-559-001044350