Hi All-

I have a project which has a small chiller which also has a dry cooler. The
dry cooler has only the circulation pump, then two variable speed fans which
modulate to maintain return water temp. Initially I figured out how to add
a second chiller to the loop, and make it run only below the designated OAT
using Equipment Controls and Load management I seem to see the savings
(using a default EIR of nearly zero for testing purposes) . I am hopeful
that I can then create a custom performance curve for this dry cooler,
basing the energy consumption on load and OAT. Alternately if that is too
complicated, I think OAT would be a reasonable backup plan.

Does anyone have any guidance on creating such a performance curve in this
situation?

Thanks

Laura