GOC325840-CS-1 - Optimize Cooling Plant for Energy Performance

Optimize the cooling plan for energy performance. This project encompasses the replacement of the two (2) chillers and installation of VFDs on the three (3) primary chilled water pumps (P-8, P-9 & P-10) and the back-up secondary chilled water pump (P-12) and to revise and implement additional controls to optimize the chiller plant. The control valves on the main air handling equipment (i.e. VAV AHU, Office MUA unit and six (6) compartmental units) will not be modified. The sequence of operation for the chillers, primary and secondary chilled water pumps and cooling towers will be revised and/or added in the BAS so that all equipment runs within its optimum efficiency range and to have equal run-times for all of the equipment. This will ensure that the cooling plant operates at peak performance and extends the service life of the equipment. In addition, since standard-duty motors cannot operate reliably at lower RPMs, the existing three (3) primary and two (2) secondary chilled water pump motors will be replaced with new inverter-duty motors. Consultant to investigate heat recovery options for using waste chiller heat in the buildings domestic hot water and or perimeter heating system.