Question 1 of 6
Basic

Why will pumps with a constant duty point soon be a thing of the past?

Question 2 of 6
Basic

What happens to the flow when the NPSH value increases?

Question 3 of 6
Basic

What does a P2-curve measure?

Question 4 of 6
Basic

In their simplest forms, what do pump curves measure?

Question 5 of 6
Basic

What characterises a flat curve?

Question 6 of 6
Basic

What do you have when there’s a cross point between the system’s characteristics and the pump’s performance?

Question 6 of 6
Basic

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1: Why will pumps with a constant duty point soon be a thing of the past?
Because duty pumps no longer operate alone
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1: Why will pumps with a constant duty point soon be a thing of the past?
Because better and smarter control valves are available
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1: Why will pumps with a constant duty point soon be a thing of the past?
Because of the use of variable speed pumps for applications with variable demand
2: What happens to the flow when the NPSH value increases?
It decreases
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2: What happens to the flow when the NPSH value increases?
It remains the same
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2: What happens to the flow when the NPSH value increases?
It increases as well
3: What does a P2-curve measure?
The relation between the power supplied and the power used
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3: What does a P2-curve measure?
The relation between a pump’s power consumption and flow
3: What does a P2-curve measure?
The pump’s head
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4: In their simplest forms, what do pump curves measure?
Pressure and flow
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4: In their simplest forms, what do pump curves measure?
Flow and head
4: In their simplest forms, what do pump curves measure?
Flow and pressure
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5: What characterises a flat curve?
When there are small changes in head resulting in large changes in flow
5: What characterises a flat curve?
When there are large changes in head resulting in large changes in flow
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5: What characterises a flat curve?
When there are small changes in head resulting in small changes in flow
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6: What do you have when there’s a cross point between the system’s characteristics and the pump’s performance?
The specific duty point
6: What do you have when there’s a cross point between the system’s characteristics and the pump’s performance?
The desired flow rate
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6: What do you have when there’s a cross point between the system’s characteristics and the pump’s performance?
The total head
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