| 温度及流速对板式换热器内城镇二级出水结垢特性的影响 | |
| 昝成 ; 史琳 ; 欧鸿飞 ; ZAN Cheng ; SHI Lin ; OU Hongfei | |
| 2010-06-08 ; 2010-06-08 | |
| 关键词 | 混合污垢 城镇二级出水 板式换热器 污垢热阻 composite fouling municipal secondary effluent plate heat exchanger fouling thermal resistance TK172 |
| 其他题名 | Effects of temperature and velocity on fouling by municipal secondary effluent in plate heat exchangers |
| 中文摘要 | 为了解城镇二级出水热能回用中结垢的影响因素,该文以板式换热器内二级出水为研究对象,在热泵工况下对污垢热阻及流动压降进行了现场全周期监测,并着重考查了温度和板间流速对污垢初始形成过程的影响。实验结果表明:污垢形成过程存在起始期、生长期和渐进期,起始期长度为3.5～8d;温度对于混合污垢形成的影响呈单调性,春夏两季污垢生长旺盛;板间流速决定了"生长"和"剥离"两种作用在污垢形成过程中的竞争关系;该研究可为二级出水板式换热器的优化设计和运行提供指导。; The fouling characteristics of municipal secondary effluent in plate heat exchangers were investigated in the field. The fouling resistance and flow pressure drop were monitored for various heat pump working conditions. The tests focused on the effects of temperature and velocity on the initial stage of fouling formation. The experiments show that the fouling formation in the plate heat exchanger consists of an initial period, a growth period, and an asymptotic layer thickness period. The initial period lasts 3.5~8 days, with temperature increase, increasing the fouling formation rate, so the fouling grows faster in the spring and summer. The competition between "growing" and "spalling" is related to the velocity during fouling.; 国家科技攻关奥运专项(2005BA904B06); 国家“十一五”科技支撑计划资助项目(2006BAC02A18) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/50689]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 昝成,史琳,欧鸿飞,等. 温度及流速对板式换热器内城镇二级出水结垢特性的影响[J],2010, 2010. |
| APA | 昝成,史琳,欧鸿飞,ZAN Cheng,SHI Lin,&OU Hongfei.(2010).温度及流速对板式换热器内城镇二级出水结垢特性的影响.. |
| MLA | 昝成,et al."温度及流速对板式换热器内城镇二级出水结垢特性的影响".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论