Impact of inner-wall reflection on UV reactor performance as evaluated by using computational fluid dynamics: The role of diffuse reflection
文献类型：期刊论文
| 作者 | Li, Wentao; Li, Mengkai; Bolton, James R.; Qu, Jiuhui; Qiang, Zhimin |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 109期号:0页码:382-388 |
| 关键词 | Uv Reactor Performance Inner-wall Reflection Diffuse Reflection Fluence Rate Distribution Reduction Equivalent Fluence |
| 英文摘要 | Making use of the reflected ultraviolet (UV) radiation with a reflective inner wall is a promising way to improve UV reactor performance. In this study, the impact of inner-wall reflection on UV reactor performance was evaluated in annular single-lamp UV reactors by using computational fluid dynamics, with an emphasis on the role of diffuse reflection. The UV radiation inside the reactor chamber was simulated using a calibrated discrete ordinates radiation model, which has been proven to be a reliable tool for modeling fluence rate (FR) distributions in UV reactors with a reflective inner wall. The results show that UV reactors with a highly reflective inner wall (Reflectivity = 0.80) had obviously higher FRs and reduction equivalent fluences (REFs) than those with an ordinary inner wall (Reflectivity = 0.26). The inner-wall diffuse reflection further increased the reactor REF, as a result of the elevated volume averaged FR. The FR distribution uniformity had conditioned contributions to UV reactor performance. Specifically, in UV reactors with a plug-like flow the FR distribution uniformity contributed to the REF to some extent, while in UV reactors with a mixed flow it had little influence on the REF. This study has evaluated, for the first time, the impact of inner-wall diffuse reflection on UV reactor performance and has renewed the understanding about the contribution of FR distribution uniformity to UV reactor performance. (C) 2016 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39707]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Wentao,Li, Mengkai,Bolton, James R.,et al. Impact of inner-wall reflection on UV reactor performance as evaluated by using computational fluid dynamics: The role of diffuse reflection[J]. WATER RESEARCH,2017,109(0):382-388. |
| APA | Li, Wentao,Li, Mengkai,Bolton, James R.,Qu, Jiuhui,&Qiang, Zhimin.(2017).Impact of inner-wall reflection on UV reactor performance as evaluated by using computational fluid dynamics: The role of diffuse reflection.WATER RESEARCH,109(0),382-388. |
| MLA | Li, Wentao,et al."Impact of inner-wall reflection on UV reactor performance as evaluated by using computational fluid dynamics: The role of diffuse reflection".WATER RESEARCH 109.0(2017):382-388. |
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来源：生态环境研究中心
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