城市原生污水冷热源污水黏度特性实验测试  

Test on the viscosity of the urban original wastewater as a cool and heat source

作　　者：吴荣华[1] 张成虎[1] 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

出　　处：《哈尔滨工业大学学报》2006年第9期1492-1495,共4页Journal of Harbin Institute of Technology

基　　金：黑龙江省科技攻关项目(04GCZ1474)

摘　　要：城市原生污水的黏度特性是其作为冷热源应用的关键设计参数．将污水流动视为均质非牛顿幂律流，基于管式流变仪实验基础，分析层流条件时表观黏度的本构常数实验求解式，在紊流条件下基于卡门对数分布与尼古拉兹实验，推导平均流速、阻力速度与黏度项的关联式及其计算公式，定义特征黏度与计算雷诺数．在两种不同流态下测试污水的表观黏度η=2．2～8．0×10^-4（du／dy）^0.6，两种流态下表观黏度表现出一定的差异．The viscosity of the urban original wastewater is a key parameter of heat exchange when it using as cool ＆ heat source. Using the tube rheometer as the experiment basis, treats the sewage as non-Newtonian exponential homogeneous fluid, and analyzes the viscosity＇ s special relationship in laminar flow. Based on Krrmrn logarithm distribution and Nikuradse experiment, the associated formula about the average velocity, resistance velocity and viscosity is obtained , and the characteristic viscosity and characteristic Reynolds rule arc defined, η = 2. 2 - 8.0 × 10^-4（du/dy）^0.6 from the two different states were tested, which have some differences. The complicated mixture in the wastewater influenced the viscosity observably, and the original wastewater shows the shear densenes characteristic.

关 键 词：城市原生污水 非牛顿流 表观黏度 特征黏度 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]