Sentence examples for behaviour of three up-pumping from inspiring English sources
The mixing behaviour of three up-pumping agitators (D/T = 0.45) have been measured in a T = 0.15 m diameter model bioreactor in the turbulent flow regime.
The agitator was a hollow blade dispersing turbine below two up-pumping hydrofoils.
The single shaft agitator comprised a hollow blade BT-6 dispersing impeller surmounted by two up-pumping Maxflo wide-blade hydrofoils.
PIV measurements conveyed a degree of fluid compartmentalisation resulting from the up-pumping impeller.
In this work, a systematic comparative evaluation of the performance of seven different dual-impeller configurations in a stirred tank bioreactor was carried out using Rushton turbines (RT) and Elephant Ear impellers in down-pumping (EEDP) and up-pumping (EEUP) modes.
Here, two different reactors of volumes 12 and 30 m3 were used, and they were equipped with either multiple Rushton turbines or with a combination of a Scaba 6SRGT radial impeller with multiple 3SHP axial up-pumping hydrofoils above it.
The up-pumping configuration is robust, with little effect of feed configuration or variations in geometry in the bottom of the tank on the selectivity.
Eccentric agitation was employed as a means of breaking solid body rotation within the vessel, using a 6-blade, up-pumping pitched blade turbine.
Similar results were found at higher agitator speeds with both the PBTD and an up-pumping PBT (PBTU) where a small amount of surface aeration occurred.
A refractive index matching technique combined with particle image velocimetry (PIV) was used to measure turbulent properties of solid liquid suspensions in a small high throughput scale cylindrical vessel of 45 mm diameter agitated with a 45° pitched blade turbine (PBT) for up-pumping (U) and down-pumping (D) configurations.
The Lagrangian flow data provided by PEPT have been converted to give a detailed Eulerian description of the two-phase flow generated by a pitched blade turbine (PBT) operating in up-pumping or down-pumping mode.
