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

The viscosity of the urban original wastewater is a key parameter of heat exchange when it using as cool and 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 Kfirmcin 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 are 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.