Question 1 of 6
Intermediate

Which function can you use to start or stop the fan in the cooling tower?

Question 2 of 6
Intermediate

Does fixed-speed operation give you a greater control of energy use?

Question 3 of 6
Intermediate

How much of the 30 % of water lost to evaporation can you potentially save by using the right control?

Question 4 of 6
Intermediate

What does the air pass through on its way out of the cooling towers?

Question 5 of 6
Intermediate

What does the hysteresis band do?

Question 6 of 6
Intermediate

Why are single-stage Grundfos NB/NK pumps usually used in cooling towers?

Question 6 of 6
Intermediate

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1: Which function can you use to start or stop the fan in the cooling tower?
The operating mode function
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1: Which function can you use to start or stop the fan in the cooling tower?
The control mode function
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1: Which function can you use to start or stop the fan in the cooling tower?
The limit exceed function
2: Does fixed-speed operation give you a greater control of energy use?
Yes
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2: Does fixed-speed operation give you a greater control of energy use?
No
3: How much of the 30 % of water lost to evaporation can you potentially save by using the right control?
None
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3: How much of the 30 % of water lost to evaporation can you potentially save by using the right control?
5%
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3: How much of the 30 % of water lost to evaporation can you potentially save by using the right control?
20%
4: What does the air pass through on its way out of the cooling towers?
It passes through the fill
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4: What does the air pass through on its way out of the cooling towers?
It passes through the drift eliminators
4: What does the air pass through on its way out of the cooling towers?
It doesn’t pass through anything
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5: What does the hysteresis band do?
It ensures that the fan starts when you exceed a set temperature
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5: What does the hysteresis band do?
It determines how low the temperature can be before the fan stops running
5: What does the hysteresis band do?
Nothing – it’s a made-up phrase
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6: Why are single-stage Grundfos NB/NK pumps usually used in cooling towers?
To meet requirements for high flow and low pressure
6: Why are single-stage Grundfos NB/NK pumps usually used in cooling towers?
To meet requirements for low flow and high pressure
You can find the answer here >