1
How does distributed pumping ensure minimum flow over each chiller?
2
Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
3
What is the key design element in Grundfos Distributed Pumping?
5
With a single dedicated pump for each terminal unit, which control mode is used?
6
Why is coil flow always correct in a distributed pumping system?
Test results
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Q: How does distributed pumping ensure minimum flow over each chiller?
A: By having a differential pressure sensor installed across each chiller
Q: How does distributed pumping ensure minimum flow over each chiller?
A: By running with maximum flow at maximum load
Q: How does distributed pumping ensure minimum flow over each chiller?
A: By ensuring the primary pump is larger than in a conventional system
Q: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
A: You don’t need non-return valves – intelligent pumps make all valves redundanteed
Q: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
A: To avoid backflow in case the AHU unit is out of operation
Q: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
A: You only need non-return valves for proportional pressure installations
Q: What is the key design element in Grundfos Distributed Pumping?
A: A new kind of intelligent valve
Q: What is the key design element in Grundfos Distributed Pumping?
A: The use of intelligent pumps instead of valves
Q: What is the key design element in Grundfos Distributed Pumping?
A: Making bypass lines obsolete
Q: Pump energy savings in a distributed pumping system are around:
A: 25%
Q: Pump energy savings in a distributed pumping system are around:
A: 35%
Q: Pump energy savings in a distributed pumping system are around:
A: 54%
Q: With a single dedicated pump for each terminal unit, which control mode is used?
A: Proportional pressure
Q: With a single dedicated pump for each terminal unit, which control mode is used?
A: Proportional pressure or constant temperature – doesn’t matter
Q: With a single dedicated pump for each terminal unit, which control mode is used?
A: Constant temperature
Q: Why is coil flow always correct in a distributed pumping system?
A: By using large variable speed-controlled primary pumps
Q: Why is coil flow always correct in a distributed pumping system?
A: Because Magna 3 pump speed is modulated based on terminal unit load
Q: Why is coil flow always correct in a distributed pumping system?
A: Because the system runs with maximum flow at maximum load