文献类型：期刊文献

英文题名：Investigation of heat transfer mechanism affecting temperature homogeneity at polysilicon rods in a Siemens reduction furnace

作者：Si, Wei[1];Wang, Ning[2];Zong, Yuan[1];Dai, Gance[1];Zhao, Ling[1];Xin, Zhong[1];Jiang, Guangjing[2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Xinjiang Greens Energy Technol Co Ltd, Urumqi, Peoples R China

年份：2024

卷号：636

外文期刊名：JOURNAL OF CRYSTAL GROWTH

收录：;EI(收录号：20241715955315);WOS:【SCI-EXPANDED(收录号:WOS:001232698200001)】；

语种：英文

外文关键词：Polysilicon; Temperature difference; Heat transfer mechanisms; Siemens reduction furnace

摘要：The temperature homogeneity at polysilicon rods significantly affects the uniformity growth of the polysilicon rod and the product quality in reduction furnace. The heat transfer phenomena on the rod surface includes electric heating, radiation heat transfer, convection heat transfer, heat conduction and reaction heat. In this paper, a representative configuration (RC) of heat transfer model was selected from a "honeycomb" industrial furnace. The flow patterns with different outlets have been numerically investigated and the dependency of surface temperature distribution on the inlet velocity as well as the geometric parameters has been investigated. Gr/Re2d = 100 is set as the transition point determining the natural convection and mixed convection heat transfer. The results indicated that the axial temperature difference at the rod surface has close relationship with the complicated convection heat transfer. With rods growth, the main difference of local heat loss is caused by radiation rather than convection heat transfer.