期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：7
页码：6337
DOI：10.15680/IJIRSET.2015.0407146
出版社：S&S Publications
摘要：This paper presents the analyses of the effect of the arrangement of tubes in a tube bundle ina horizontal, two-pass condenser on the amount of heat transferred to the circulating water in the tubes. Thetube bundle is assumed to act as a staggered tube bank in cross-flow with downward superheated steam flow.The saturated circulating water is assumed to be turbulent flow. The relationships for heat transfer through tube banks,including condensate inundation, vapor shear, and the effect of tube surface geometry are used in analyzing sixtube configurations to determine the largest change in temperature of the circulating water. The heat flux in thesystem is defined as a function of the condenser and tube material properties, tube geometry, tube spacing,condensate inundation and steam velocity. Numerical modeling of the six tube configurations using a ReynoldsaveragedNavier-Stokes (RANS) approach is presented to confirm the analytical results. An attempt is made toanalyses of the analytical and numerical results from the six configurations examined provide the optimal tubearrangement for maximum heat transfer to the circulating water. It is found that the circulating water temperature isdependent on the steam-air mixture velocity profile used. The most heat transfer occurs in the tubes rows where thesteam-air mixture velocities are the highest. Furthermore, the magnitude of the velocity profile is proportionalto the magnitude of the change in circulating water temperature.
关键词：Tube Configuration; Flow3d; Two Pass; Heat Transfer.
