6 questions Advanced

ECADEMY test

Air Conditioning

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

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Question 3 of 6 Advanced

3 For which control mode is the following true: The pump head and speed is adjusted according to a setting in the pump.

Question 4 of 6 Advanced

4 For which control mode is the following true: The head is adjusted according to differential pressure measurements in a reference point, and the head decreases when the flow is reduced.

Question 5 of 6 Advanced

5 Which one of the three typical air con systems has low operation costs and high flexibility?

Question 6 of 6 Advanced

6 How many control modes are relevant for an air conditioning system?

Question 6 of 6 Advanced

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Correct
Q: Why is it important to understand the effects of control modes in an air conditioning system?
A: The right control mode means reduced energy consumption and savings
Correct
Q: What needs to be done in order to change a constant flow system with 3-way valves?
A: Replace constant speed pumps with speed controlled pumps and replace 3-way valves with 2-way valves
Correct
Q: For which control mode is the following true: The pump head and speed is adjusted according to a setting in the pump.
A: Proportional differential pressure mode (calculated)
Correct
Q: For which control mode is the following true: The head is adjusted according to differential pressure measurements in a reference point, and the head decreases when the flow is reduced.
A: Proportional differential pressure mode (measured)
Correct
Q: Which one of the three typical air con systems has low operation costs and high flexibility?
A: A variable flow system with a variable flow chiller
Correct
Q: How many control modes are relevant for an air conditioning system?
A: 5