带定位格架12根束棒水强制对流放热试验研究

EXPERIMENTAL STUDY ON HEAT TRANSFER OF WATER FORCED CONVECTION WITH GRID SPACED 12-ROD BUNDLE

摘要: <正> 一、引言文献1曾为6根束棒(即1/2束棒组件)稳定区放热作了试验,但人们对整体12根束棒组件稳定区放热系数是否与6根束棒情况一样,还不清楚,有待检验,文中对6根束棒与12根束棒进行了比较,并比较了文献2,3的关系式,得到较合理的计算带定位格架的关系式;在此同时,对束棒流道采用有效热当量直径与水力当量直径两种方法处理数

Abstract: In this work the cross section of the test section is similar to that of theprototype. A comparison of the test results with those calculated in literature (2)(3) (4) (6) is made and a good agreement between them is obtained. A correla-tion is presented for estimating the mean heal transfer coefficient of water forcedconvection of the 12-rod bundle.