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  1. 2 Czasopismo Techniczne

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  1. 2 2016

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  1. 2 Brehmer M.

  2. 2 Kraume M.

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Experimental Study to Develop a Control System for Submersible Mixers in Biogas Plants

100%
Brehmer M., Kraume M.
Czasopismo Techniczne
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-
PL
For developing a control system for these agitators, the analysis focused on the rheological characteristics of digestates, the open jet in non-Newtonian fluids and the flow conditions in a biogas reactor. In addition to a clearly visible shear-thinning effect, the viscoelastic proportion of these substrates was also determined. Depending on the stirrer speed and the rheology, the angle of spread varies and a reverse flow can occur directly at the stirrer. Therefore, not only can the position of the stirrer be used to optimise the flow field. The conical spreading of the liquid jet also enhance the mixing process. By using thrust measurements, their suitability as controlled process variables could be demonstrated.
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Experimental Study to Develop a Control System for Submersible Mixers in Biogas Plants

100%
Brehmer M., Kraume M.
Czasopismo Techniczne
|
-
PL
For developing a control system for these agitators, the analysis focused on the rheological characteristics of digestates, the open jet in non-Newtonian fluids and the flow conditions in a biogas reactor. In addition to a clearly visible shear-thinning effect, the viscoelastic proportion of these substrates was also determined. Depending on the stirrer speed and the rheology, the angle of spread varies and a reverse flow can occur directly at the stirrer. Therefore, not only can the position of the stirrer be used to optimise the flow field. The conical spreading of the liquid jet also enhance the mixing process. By using thrust measurements, their suitability as controlled process variables could be demonstrated.
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