Modeling PCW Heat Rejection for DES vs. System 5 (DX Cooling)

I am working on a building that supplies process cooling water (PCW) to lab spaces. The PCW rejects its heat through a heat exchanger to the chilled water system from a district energy plant. Therefore, my proposed design would allow a 4.4 COP for electric consumption by the district energy plant (CHW system) serving my building's PCW system. Because of the system pressures, a CHW pump is not required for the proposed design. How should I model the PCW energy in the baseline design? Because I essentially have DX equipment in the baseline design, could I reference a type of equipment under ASHRAE 90.1-2007 Table 6.8.1C efficiency requirements? Say "Air cooled, with condenser, electrically operated; All capacities; 2.80 COP"?