yeah, pretty smart move.
The old chillers can't handle the newer methods for increased efficiency, like lower cond temps, variable primary flows, etc.
Have any of you heard of the ClimaCheck Analyzer? This tool is by far the most advanced tool for you to get all the information you want regarding optimization of a chiller. Take a look at this
Advertising Link Removed
looks more like an ad for your company.
Dont know if it's any good,but they have good articles about chiller operation.
There are two I have limited experience with, Optimum Energy and the CPECS from Smardt/Kiltech.
They are both Tridium based, the Optimum Energy one the last I heard requires a annual fee to continue operating. I have heard figures as high as $20k a year. I also believe they will not show you any of their code.
The CPECS one is also a Tridium based application, it runs on a softjace and uses Kiltechs controllers (I/O Boards) integrated to the softjace through Modbus TCP to chillers and 485 to the VFD's. The one I worked on they gave me full admin access and there is not an ongoing annual fee I am aware of.
I'm sure there are many others out there. It's really about understanding all of the efficiency curves of your equipment and using the code to determine the sweet spot to be operating in at a given time based on load profile and outside conditions.
Advertising not happening here....
One and only warning given
Armstrong Pumps has a central plant optimization controller. I think that it is BACNet based. I have seen it in action once.