JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Experimental Study on Coefficient of Flow Convection
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Experimental Study on Coefficient of Flow Convection
Jeon, Sang-Eun; Kim, Kook-Han; Kim, Jin-Keun; Yang, Joo-Kyoung;
  PDF(new window)
 Abstract
Pipe cooling method is widely used for reduction of hydration heat and control of cracking in mass concrete structures. However, in order to effectively apply pipe cooling systems to concrete structures, the coefficient of flow convection relating the thermal transfer between inner stream of pipe and concrete must be estimated. In this study, a device measuring the coefficient of flow convection was developed. Since a variation of thermal distribution caused by pipe cooling has a direct effect on internal forced flows, the developed testing device is based on the internal forced flow concept. Influencing factors on the coefficient of flow convection are mainly flow velocity, pipe diameter and thickness, and pipe material. Using experimental results from the developed device, the coefficient of flow convection was calculated. Finally, a general prediction model was proposed by theoretical procedures. The proposed prediction model is able to estimate the coefficient of flow convection with flow velocity and material properties of pipe. From comparison with experimental results, the coefficient of flow convection by this model was well agreed with those by experimental results.
 Keywords
pipe cooling system;coefficient of flow convection;thermal transfer;internal flow;
 Language
Korean
 Cited by
 References
1.
田讀忠顯, 'マスコンクリ-トのパイフク-リングによる熱除 法果の解析', :弗7回コンクリ-ト工學年次論文報告集, 1985

2.
川原揚博美,'マスフンクリ-トの提度力に對ヤるパイプ ク~リング果の大き由廣ダEM解析の開發',提8回コンク リ-ト工學年次論文報告集, 1986

3.
田辺, 山川, 渡, 'パイプク-リンにおける等壁面の熱 傳達の決定ぁらびに冷却效果の解析', 土木學會論文集, 第34호, 1984.3

4.
E. Gaufhier and M Regourd, 'The Hardening of Cement in Function of Teiwerature,' Proceedings, RILEM Intermtional Conference on Concrete at Earty Ages, Pahs, Ecole National des Ponts et Chausses, Vol. 1, 1982

5.
오병환, 신경준, 차수원, '매스 콘크리트 구조물의 파이프 쿨링에 의한 냉각효과', 한국콘크리트학회 봄학술발표회 논문집, Vol. 11, No. 1, 1999. pp299-304

6.
A Bejan, 'Heat Transfer', Wiley, 1993

7.
이택식, 이재현, 이준식, '열전달', 희중당, 1992