Question 1 of 4
Intermediate

Why is the constant primary circulation system no longer used?

Question 2 of 4
Intermediate

Why is low Delta T a serious problem for a typical pumping scheme?

Question 3 of 4
Intermediate

What happens to the return air temperature when the heat load at the end of the day decreases?

Question 4 of 4
Intermediate

What is a decoupler also known as?

Question 4 of 4
Intermediate

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1: Why is the constant primary circulation system no longer used?
The parts are no longer available
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1: Why is the constant primary circulation system no longer used?
It's too noisy
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1: Why is the constant primary circulation system no longer used?
It's not very energy-efficient
2: Why is low Delta T a serious problem for a typical pumping scheme?
It results in heavy wear and tear of the valves
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2: Why is low Delta T a serious problem for a typical pumping scheme?
It reduces the installed chiller capacity at the plant
2: Why is low Delta T a serious problem for a typical pumping scheme?
It causes the system to break down, because of a safety measure
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3: What happens to the return air temperature when the heat load at the end of the day decreases?
The return air temperature increases
3: What happens to the return air temperature when the heat load at the end of the day decreases?
The return air temperature also decreases
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3: What happens to the return air temperature when the heat load at the end of the day decreases?
The return air temperature remains the same, but the supply temperature increases.
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4: What is a decoupler also known as?
A differential pressure sensor
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4: What is a decoupler also known as?
A neutral bridge
4: What is a decoupler also known as?
A flow meter
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