6 questions Intermediate

ECADEMY test

The role of pumps in cooling towers

This course test contains 6 questions and can be retaken at any time.

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Question 1 of 6 Intermediate

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

Question 2 of 6 Intermediate

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

Question 3 of 6 Intermediate

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

Question 5 of 6 Intermediate

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

Question 6 of 6 Intermediate

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

Question 6 of 6 Intermediate

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Correct
Q: Which function can you use to start or stop the fan in the cooling tower?
A: The limit exceed function
Correct
Q: How does Grundfos iSOLUTIONS help the pump control the cooling tower?
A: Through variable speed and start/stop functions
Correct
Q: Why are single-stage Grundfos NB/NK pumps usually used in cooling towers?
A: To meet requirements for high flow and low pressure
Correct
Q: What does the hysteresis band do?
A: It determines how low the temperature can be before the fan stops running
Correct
Q: Does fixed-speed operation give you a greater control of energy use?
A: Yes
Correct
Q: How much of the 30 % of water lost to evaporation can you potentially save by using the right control?
A: 20%