Question 1 of 6
Intermediate

What is FLOWLIMIT?

Question 2 of 6
Intermediate

What affects a system’s total cost of ownership the most?

Question 3 of 6
Intermediate

Which of the following statements about VPF systems is true?

Question 4 of 6
Intermediate

How does the VPF design achieve energy and cost savings?

Question 5 of 6
Intermediate

By separating pump control from chiller design, what does the VPF design achieve?

Question 6 of 6
Intermediate

If the chilled water temperature range for which the system is designed is not maintained…

Question 6 of 6
Intermediate

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1: What is FLOWLIMIT?
An external flow commissioning algorithm available from an app
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1: What is FLOWLIMIT?
An intelligent control valve placed after the pump
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1: What is FLOWLIMIT?
An electronic flow commissioning functionality built into the pump
2: What affects a system’s total cost of ownership the most?
Investing to increase user comfort
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2: What affects a system’s total cost of ownership the most?
Low Delta T syndrome
2: What affects a system’s total cost of ownership the most?
Low flow in the system
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3: Which of the following statements about VPF systems is true?
They are getting cheaper in installation and more energy efficient
3: Which of the following statements about VPF systems is true?
They offer substantial energy savings, but are expensive compared to other system alternatives (like primary secondary)
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3: Which of the following statements about VPF systems is true?
They need more space in buildings or facilities compared to other system alternatives
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4: How does the VPF design achieve energy and cost savings?
By keeping constant-flow chiller pumps in a separate system
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4: How does the VPF design achieve energy and cost savings?
By eliminating the constant-flow chilled water pumps by variable-flow
4: How does the VPF design achieve energy and cost savings?
It doesn’t – but reliability is greatly increased
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5: By separating pump control from chiller design, what does the VPF design achieve?
Ensures the pumps keep the water sufficiently cold to satisfy the building load
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5: By separating pump control from chiller design, what does the VPF design achieve?
A chiller and its primary pump typically operate in tandem
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5: By separating pump control from chiller design, what does the VPF design achieve?
The pumps maintain a target differential pressure, Delta P, at a specific point in the system
6: If the chilled water temperature range for which the system is designed is not maintained…
… you risk low Delta T syndrome
6: If the chilled water temperature range for which the system is designed is not maintained…
…you need to install new control valves
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6: If the chilled water temperature range for which the system is designed is not maintained…
…you need to increase flow through the chillers
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