What is the aim of thrust-to-power sizing?
Which of these isn’t a main target for wastewater mixers?
Where do vortices develop if the propeller is too close to the water surface?
What are deadzones?
How did the Stargard project redesign the layout of mixers in the tank?
Which of these describe the specific mixing power?
Test results
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Q: What is the aim of thrust-to-power sizing?
A: Maintain a steady momentum and a constant required thrust rate
Q: What is the aim of thrust-to-power sizing?
A: Deliver a sufficient thrust with the least possible energy consumption
Q: What is the aim of thrust-to-power sizing?
A: Run the power at the limit to deliver maximum thrust when necessary
Q: Which of these isn’t a main target for wastewater mixers?
A: To blend liquid with solid particles
Q: Which of these isn’t a main target for wastewater mixers?
A: To ensure quick drainage from the tank
Q: Which of these isn’t a main target for wastewater mixers?
A: To keep solid particles in suspension
Q: Where do vortices develop if the propeller is too close to the water surface?
A: At the front of the propeller
Q: Where do vortices develop if the propeller is too close to the water surface?
A: At the rear of the propeller
Q: Where do vortices develop if the propeller is too close to the water surface?
A: Underneath the propeller
Q: What are deadzones?
A: Areas that are compromised during the mixing process
Q: What are deadzones?
A: Areas consisting of infected water
Q: What are deadzones?
A: Areas in which the homogeneity is high
Q: How did the Stargard project redesign the layout of mixers in the tank?
A: They gathered four mixers in the middle of the tank
Q: How did the Stargard project redesign the layout of mixers in the tank?
A: They spread four mixers across the tank
Q: How did the Stargard project redesign the layout of mixers in the tank?
A: They remained in the same position, but were replaced with more powerful mixers
Q: Which of these describe the specific mixing power?
A: The ratio between the propeller power and the liquid volume
Q: Which of these describe the specific mixing power?
A: The ratio between the liquid volume and the solid particles
Q: Which of these describe the specific mixing power?
A: The ratio between the propeller power and propeller size