标题：Analysis of the performance of a novel heat transfer surface used in an industrial heat recovery process
作者：Du, Wenjing ;Wang, Peili ;Cheng, Lin
作者机构：[Du, Wenjing ;Wang, Peili ;Cheng, Lin ] Shandong University, 17923 Jing Shi Rd., Jinan; 250061, China
来源：International Journal of Energy for a Clean Environment
关键词：Heat recovery; Heat transfer; Heat transfer surface; Numerical simulation
摘要：Confronted with a low-quality heat source, with such drawbacks as high ash contents, discontinuity and instability in typical waste heat recovery fields, innovations are required in the arrangement of a typical heat transfer surface. In this paper, a novel structure with a rhombic heat transfer surface is suggested. This heat transfer surface is efficient in both heat recovery and ash blowing. In the heat transfer process, the new heat transfer surface shows performance like that of tubes staggered arrangement, for instance, enhanced heat transfer, relatively large flow resistance and a large convective heat transfer coefficient in the shell side. In the dust blowing process, this surface performs like that of the aligned arrangement, which is easy to cleane and efficient in dust blowing. Numerical simulation and experimental investigations are used in this paper to obtain heat transfer and flow performance in the new structure. Both numerical analyses and experimental results indicate that the new structure meets the basic requirements of the heat recovery process, which achieves high efficient heat transfer along with convenience of dust cleaning and descaling. © 2015 by Begell House, Inc.