城市污水的层流换热特性理论  

Heat transfer characteristic of urban sewage

作　　者：徐莹[1] 赵明明 孙德兴[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]中国建筑西北设计研究院,西安710003

出　　处：《哈尔滨工业大学学报》2009年第10期70-73,共4页Journal of Harbin Institute of Technology

基　　金：建设部研究开发项目(2008-K1-23);北京市"供热供燃气通风及空调工程"重点试验室开放课题(KF200710)

摘　　要：为有效利用城市污水热能,以污水源热泵系统中的流动工质——城市污水为研究对象,通过理论分析的方法,对其层流状态下的换热特性进行理论推导和实验验证.结果表明:污水作为热泵的冷热源,有良好的换热特性,推导得出的换热准则关联式h=4.53λ/D,为污水源热泵系统设计提供依据,同时为应用污水余热技术提供理论基础.To utilize the heat energy of urban sewage efficiently, which is used as working fluid in sewage heat pump system, hased on the methods of theoretical analysis and experimental research, the heat transfer characteristic of urban sewage in laminar flow was deduced. Results show that the urban sewage has excellent heat transfer characteristic as the heat and cool source of heat pump system, and the non-dimensional correlation for heat transfer is h = 4. 53 λ/D. The study provides the basis for the system design of sewage heat pump, and supplies the theoretical foundation for the utilization of waste heat in sewage.

关 键 词：污水源热泵 城市污水 换热特性 

分 类 号：TU111.19[建筑科学—建筑理论]