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The physical helical ribbon impeller diameter was 0.070 m (2.75 inches), and the cell diameter was 0.083 m (3.25 inches).
Four impellers have been used: a Maxblend, an anchor, a gate and a double helical ribbon impeller.
In this study, an autoclave is modified by including a helical ribbon impeller and a torque sensor and calibrated with different fluids including Newtonian and Power-Law fluids.
Couette analogy concept was used to develop mathematical models defining the equivalent diameter, shear rate and shear stress in terms of measurable parameters for the helical ribbon impeller.
In the device development process, the pitch blade turbine type impellers were replaced with the helical ribbon impeller, the internal cooling coils replaced with an external cooling jacket, and a torque sensor was installed.
The mixing setup developed for this study consisted of a Parr autoclave (model 4547) equipped with a helical ribbon impeller, torque sensor, speed controller and an automated data acquisition system.
Similar(44)
A fundamental model of fluid circulation in polymerization reactors agitated by helical ribbon impellers is presented.
Helical ribbon impellers and double-helical impellers (three-liter only), and multiple pitched-blade turbines (both scales) were studied.
Temperature distributions and heat transfer rates have been measured for helical ribbon impellers in vessels of diameter 0.15 and 0.4m.
Aerated mixing of shear thinning and elastic fluids with helical ribbon impellers in the laminar and transition flow regimes has been investigated.
This model can be a basis for the construction of a similar model for helical ribbon impellers operating in the laminar regime.
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