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How much was the average velocity of the volume improved by?

Question 2 of 6
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How did the Stargard project redesign the layout of mixers in the tank?

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Which of these isn’t a main target for wastewater mixers?

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Why is it important to position mixers correctly?

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Which of these describe the specific mixing power?

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What is the aim of thrust-to-power sizing?

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1: How much was the average velocity of the volume improved by?
20%
1: How much was the average velocity of the volume improved by?
25%
1: How much was the average velocity of the volume improved by?
30%
2: How did the Stargard project redesign the layout of mixers in the tank?
They gathered four mixers in the middle of the tank
2: How did the Stargard project redesign the layout of mixers in the tank?
They spread four mixers across the tank
2: How did the Stargard project redesign the layout of mixers in the tank?
They remained in the same position, but were replaced with more powerful mixers
3: Which of these isn’t a main target for wastewater mixers?
To blend liquid with solid particles
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3: Which of these isn’t a main target for wastewater mixers?
To ensure quick drainage from the tank
3: Which of these isn’t a main target for wastewater mixers?
To keep solid particles in suspension
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4: Why is it important to position mixers correctly?
To prevent the propellers from breaking
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4: Why is it important to position mixers correctly?
To neutralise vortices
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4: Why is it important to position mixers correctly?
To maximise the total bulk flow
5: Which of these describe the specific mixing power?
The ratio between the propeller power and the liquid volume
5: Which of these describe the specific mixing power?
The ratio between the liquid volume and the solid particles
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5: Which of these describe the specific mixing power?
The ratio between the propeller power and propeller size
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6: What is the aim of thrust-to-power sizing?
Maintain a steady momentum and a constant required thrust rate
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6: What is the aim of thrust-to-power sizing?
Deliver a sufficient thrust with the least possible energy consumption
6: What is the aim of thrust-to-power sizing?
Run the power at the limit to deliver maximum thrust when necessary
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