19 kW+ (each), high temperature stability (0.1 degrees C), water-to-water refrigerated chillers (Qty 2 identical) Primary cooling will be provided by campus chilled water at ~130 psi with 8-12 psi pressure differential between supply and return. Cooled loop (process) circulating pump must be capable of up to 15 GPM at 65psi. 1” internal process piping preferred Supply pressure must be adjustable up to 65 psi. - Heat exchanger must be cleanable Shell and Tube type rated 150 psi or more - Refrigerator must run continuously with hot-gas bypass valve for close temperature control Both chillers must include: - Electronic flow rate display for circulating loop flow - Integrated, non-pressurized fluid tank in each chiller with dual-stage liquid level switches Provision for tank level balancing hose between the two tanks - High supply water temperature cutout - Backflow prevention with check valve on supply and normally-closed solenoid valve on return. - 0-10 VDC flow rate output - Condenser fouling warning alarm - Potential free contacts for common alarm
