The Kya,KLa and η were measuerd in the helical rotating absorber for flue gas desulphurization processes.The results showed that the volumetric mass transfer coefficients were about1～2 orders of magnitude larger tha...The Kya,KLa and η were measuerd in the helical rotating absorber for flue gas desulphurization processes.The results showed that the volumetric mass transfer coefficients were about1～2 orders of magnitude larger than those obtained in packed columns under similar operating conditions and column diameter.The desulphurization efficiencies η for the absorption of SO2 by water were 60%～80%,which are much higher than those for conventional whirlflow plate tower.The higher the rotating speed is,the higher the Ky,KL and η will be.展开更多
The valveless piezoelectric pump integrates driving and transmitting into one operating element,and characterizes easy micro-miniaturization.But,there is the original sin of low pressure and low flow.Thus,it must avoi...The valveless piezoelectric pump integrates driving and transmitting into one operating element,and characterizes easy micro-miniaturization.But,there is the original sin of low pressure and low flow.Thus,it must avoid weakness to choose applications field.This paper analyzes the flow characteristics in the rotary spiral-tube,which will cause the Coriolis force,and subsequently influence the fluid moving.The principle of the pump is deduced,and the spiral-tube-type valveless piezoelectric pump is invented.The angular velocity variation can be obtained when the pump attitude changes,which theoretically verifies the gyroscopic effect of the pump.A pump is fabricated for experimental testing.Experiments has shown that when Archimedes spiral h?4p is selected for the tube design,and the rotation speed of the plate is 70 r/min,the pressure differential is 9 mm H2O,which is 1.5 times that of 0 r/min rotation speed.If introduced the low-cost and miniaturized gyroscope,then this may promise potential application in these areas such as smart cars,robots,and home health care.展开更多
文摘The Kya,KLa and η were measuerd in the helical rotating absorber for flue gas desulphurization processes.The results showed that the volumetric mass transfer coefficients were about1～2 orders of magnitude larger than those obtained in packed columns under similar operating conditions and column diameter.The desulphurization efficiencies η for the absorption of SO2 by water were 60%～80%,which are much higher than those for conventional whirlflow plate tower.The higher the rotating speed is,the higher the Ky,KL and η will be.
基金supported by the National Natural Science Foundation of China(51075201,51205193)
文摘The valveless piezoelectric pump integrates driving and transmitting into one operating element,and characterizes easy micro-miniaturization.But,there is the original sin of low pressure and low flow.Thus,it must avoid weakness to choose applications field.This paper analyzes the flow characteristics in the rotary spiral-tube,which will cause the Coriolis force,and subsequently influence the fluid moving.The principle of the pump is deduced,and the spiral-tube-type valveless piezoelectric pump is invented.The angular velocity variation can be obtained when the pump attitude changes,which theoretically verifies the gyroscopic effect of the pump.A pump is fabricated for experimental testing.Experiments has shown that when Archimedes spiral h?4p is selected for the tube design,and the rotation speed of the plate is 70 r/min,the pressure differential is 9 mm H2O,which is 1.5 times that of 0 r/min rotation speed.If introduced the low-cost and miniaturized gyroscope,then this may promise potential application in these areas such as smart cars,robots,and home health care.
