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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 195 - 206 (12page)
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초록· 키워드
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Heat transfer characteristics in a narrow rectangular channel are experimentally investigated for upward and downwardflows. The experimental data obtained are compared with existing data and predictions by many correlations. Based on theobservations, there are differences from others: (1) there are no different heat transfer characteristics between upward anddownward flows, (2) most of the existing correlations under-estimate heat transfer characteristics, and (3) existing correlationsdo not predict the high heat transfer in the entrance region for a wide range of Re. In addition, there are a few heat transfercorrelations applicable to narrow rectangular channels. Therefore, a new set of correlations is proposed with and withoutconsideration of the entrance region. Without consideration of the entrance region, heat transfer characteristics are expressedas a function of Re and Pr for turbulent flows, and as a function of Gz for laminar flows. The correlation proposed forturbulent and laminar flows has errors of ±18.25 and ±13.62%, respectively. With consideration of the entrance region, theheat transfer characteristics are expressed as a function of Re, Pr, and z* for both laminar and turbulent flows. The correlationfor turbulent and laminar flows has errors of ±19.5 and ±22.0%, respectively.
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참고문헌 (18)
참고문헌 신청
/ / Inconel alloy 625 material data sheet issued 2006 (Publication number SMC-063)
Battista, E. / 1970 / Turbulent Heat and Momentum Transfer in a Square Duct with Moderate Property / Int.J. Heat Mass Transfer 13 : 1063 ~ 1065
Bejan, A / 1992 / The optimal spacing of parallel plates cooled by force convection / Int.J.Heat and Mass Transfer 35 : 3259 ~ 3264
Campbell, D.A. / 1968 / Variable property turbulent heat ans momentum transfer for air in a vertical rounded corner triangular duct / Int. J. Heat Mass Transfer 11 : 1003 ~ 1
Churchill, S.W / 1972 / A general expression for the correlation of rates of transfer and other phenomena / AIChE J 18 : 1121 ~ 1128
Battista, E. / 1970 / Turbulent Heat and Momentum Transfer in a Square Duct with Moderate Property / Int.J. Heat Mass Transfer 13 : 1063 ~ 1065
Bejan, A / 1992 / The optimal spacing of parallel plates cooled by force convection / Int.J.Heat and Mass Transfer 35 : 3259 ~ 3264
Campbell, D.A. / 1968 / Variable property turbulent heat ans momentum transfer for air in a vertical rounded corner triangular duct / Int. J. Heat Mass Transfer 11 : 1003 ~ 1
Churchill, S.W / 1972 / A general expression for the correlation of rates of transfer and other phenomena / AIChE J 18 : 1121 ~ 1128
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