Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

What does the hysteresis band do?

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

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

Question 5 of 6
Intermediate

What is the main purpose of a cooling tower?

Question 6 of 6
Intermediate

How does Grundfos iSOLUTIONS help the pump control the cooling tower?

Question 6 of 6
Intermediate

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1: Why are single-stage Grundfos NB/NK pumps usually used in cooling towers?
To meet requirements for high flow and low pressure
1: Why are single-stage Grundfos NB/NK pumps usually used in cooling towers?
To meet requirements for low flow and high pressure
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2: What does the hysteresis band do?
It ensures that the fan starts when you exceed a set temperature
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2: What does the hysteresis band do?
It determines how low the temperature can be before the fan stops running
2: What does the hysteresis band do?
Nothing – it’s a made-up phrase
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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: Does fixed-speed operation give you a greater control of energy use?
Yes
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4: Does fixed-speed operation give you a greater control of energy use?
No
5: What is the main purpose of a cooling tower?
To transfer heat from the cooling water to the air by evaporation
5: What is the main purpose of a cooling tower?
To boost pressure in the distribution area
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5: What is the main purpose of a cooling tower?
To keep a volume of water for emergency use
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6: How does Grundfos iSOLUTIONS help the pump control the cooling tower?
By keeping the pumps running at constant speed
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6: How does Grundfos iSOLUTIONS help the pump control the cooling tower?
Through variable speed and start/stop functions
6: How does Grundfos iSOLUTIONS help the pump control the cooling tower?
By using powerful fans
You can find the answer here >