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http://dx.doi.org/10.3795/KSME-B.2008.32.2.158

Experimental Study on the Secondary Flow Characteristics of a Supercritical Carbon Dioxide Flow in a Gas Cooling Process Within a Square Duct  

Han, Seong-Ho (고려대학교 기계공학과)
Seo, Jung-Sik (고려대학교 기계공학과)
Kim, Young-Chan (고려대학교 기계공학과)
Kim, Min-Soo (서울대학교 기계공학과)
Choi, Young-Don (고려대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.32, no.2, 2008 , pp. 158-165 More about this Journal
Abstract
The carbon dioxide properties change sharply near the critical or pseudo-critical point in the heat transfer processes. The reduction in turbulent, convective heat transfer parameters observed in some supercritical data and in experiments with common gases can be due to property variation, acceleration, buoyancy or combinations of these phenomena, depending on the conditions of the applications. In this study, the measurement for the secondary flow driven by buoyancy was carried out on the supercritical carbon dioxide turbulent flows in the different boundary condition with the constant mass flow rate. The available measuring techniques were used to clarify the behaviour of any supercritical fluid. Laser Doppler Velocimeter (LDV) and a special device was used to measure the secondary velocity and turbulent characteristics of the supercritical flows.
Keywords
LDV; Supercritical-Point; Carbon Dioxide; Refrigerant; Gas Cooling;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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