1
In a typical air conditioning system, which control mode can you apply to the cooling tower pump?
2
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.
3
What does affordability mean?
4
For which control mode is the following true: The performance of the pump is adjusted to the performance of the cooling tower, and keeps the water fed to the condenser at a constant temperature.
5
Why is it important to understand the effects of control modes in an air conditioning system?
6
Which one of the three typical air con systems has low operation costs and high flexibility?
Test results
01.
Q: In a typical air conditioning system, which control mode can you apply to the cooling tower pump?
A: Constant curve mode
01.
Q: In a typical air conditioning system, which control mode can you apply to the cooling tower pump?
A: Constant pressure mode
01.
Q: In a typical air conditioning system, which control mode can you apply to the cooling tower pump?
A: Temperature control mode
02.
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: Temperature control mode
02.
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 (calculated)
02.
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)
03.
Q: What does affordability mean?
A: It is a term used to describe the operation costs of running an air conditioning system
03.
Q: What does affordability mean?
A: It means the initial cost of a system
03.
Q: What does affordability mean?
A: It is a term used when describing the environmental cost of a system
04.
Q: For which control mode is the following true: The performance of the pump is adjusted to the performance of the cooling tower, and keeps the water fed to the condenser at a constant temperature.
A: Proportional differential pressure mode (calculated)
04.
Q: For which control mode is the following true: The performance of the pump is adjusted to the performance of the cooling tower, and keeps the water fed to the condenser at a constant temperature.
A: Proportional differential pressure mode (measured)
04.
Q: For which control mode is the following true: The performance of the pump is adjusted to the performance of the cooling tower, and keeps the water fed to the condenser at a constant temperature.
A: Temperature control mode
05.
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
05.
Q: Why is it important to understand the effects of control modes in an air conditioning system?
A: The wrong control mode can damage the pumps
05.
Q: Why is it important to understand the effects of control modes in an air conditioning system?
A: The wrong control mode results in excessive water usage
06.
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
06.
Q: Which one of the three typical air con systems has low operation costs and high flexibility?
A: A variable flow system with a constant flow chiller
06.
Q: Which one of the three typical air con systems has low operation costs and high flexibility?
A: A constant flow system with a constant flow chiller