INVESTIGATION ON THE HEAT TRANSFER INTENSIFICATION MECHANISM OF A NEW FLUIDIZED BED HEAT EXCHANGER

摘要：

　　In this study, a new heat transfer intensification method was verified experimentally to reveal the relationship between the increase of heat transfer coefficient and the change of hydrodynamics on heat tube surface.A specially designed electrically heated vertical tube and an optical filter probe were employed to measure the heat transfer coefficient and surface hydrodynamics, respectively.The experimental results further demonstrated the feasibility of the heat transfer intensification method, excluding the influence of gas distributor.Axial profile of heat transfer coefficient confirmed the existence of the effective intensification height.The reduced root mean residence time of packet as a result of the double distributor designed in the annular catalyst cooler played a dominant role on increasing the heat transfer coefficient.

作者: Xiuying Yao Xiao Han Yongmin Zhang Chunxi Lu

作者单位: State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing,102249,China China Special Equipment Inspection and Research Institute,Beijing,100013,China

会议类型: 国际会议

会议名称: The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)

会议地点: 北京

会议语种:英文

页码: 523-528

在线出版日期: 2014-05-14（万方平台首次上网日期，不代表论文的发表时间）