Hydraulic characteristics model of U-shape single hollow fiber membrane

According to the hydraulics theory, a mathematical model was built up to describe the water flow rate produced by and internal pressure in a U-shape single hollow fiber membrane. The results showed that the rate of flux increased with decreasing the distance to the outlet under the same effluent water head. Similarly, the flux increased more fast with the increasing of the effluent water head at the site which is more close to the outlet.It means that flow rate can be increased by raising water head of effluent as well as lengthening the fiber to a certain extent. The internal pressure in fiber decreased quickly with decreasing the distance to the outlet. The gradient of internal pressure augmented with the increasing of flow rate at the site which is more close to the outlet. The influence of temperature on flow rate was also studied.