EXPERIMENTAL RESEARCH ON THE SALT-OUT FLOW IN CHEMICAL PUMP
For further study of the salt-out mechanism in the chemical pump, under different temperatures,. Particle Image Velocimetry combined with image processing method is used to measure the salt-out turbulent flow of sodium sulfate solution in the impeller. The experimental results indicate that: there is not any crystal particle during the delay period, so the performance of pump is not affected. After the delay period, the crystal nuclei are born from the supersaturation solution and grow larger with temperature decreases. At lower temperature, tendency of crystal particles moving toward the pressure side of vane is more significant. According to analysis of experimental results, it is considered that there are two main reasons for this phenomenon, the low velocity near the pressure side is in favor of crystal growth, on the other hand, composite force of crystal particles is leaned to the pressure side because of the high density of crystal. These results are helpful to engineering design of this kind pump.
chemical pump salt-out mechanism PIV image processing delay period
Dong Liu Minguan Yang Gao Bo Kang Can
School of Energy and Power Engineering, Jiangsu University, Zhenjiang China
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
2192-2197
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）