variable speed primary chilled water system
variable speed primary chilled water system
(OP)
What is the best control strategy for not going beyond a chillers maximum rate of flow change, while still controlling the VFD's based off of zone differential pressure. IE if the controller sees a sudden drop in zone dp, it will increase the drive speed to compensate. In doing so, you could exceed the recommended 10% per minute change in flow rate.





RE: variable speed primary chilled water system
This is for a variable primary flow application. If you have only secondary variable flows, this doesn't matter at all.