Building A and B both receive conditioned supply air from custom made air handling units (AHU’s). Building A has eight units and Building B has three units which are all rated at 50,000 cfm each. Building A and B both receive 100% outside air for ventilation. Air is supplied at a Constant Air Volume (CAV) to remote CAV boxes located throughout both Building A and B. In order to reduce some of the energy consumption associated with 100% outside air systems, total energy wheels are being used on all of the AHU’s. The pool area in Building A is served by a dedicated packaged air handling unit to better meet the temperature and humidity control requirements.
Three 1,000 ton water cooled centrifugal chillers are located in the basement of Building A. One 180 ton heat recovery chiller is located in the basement of Building A and a 225 ton heat recovery chiller is located in the basement of Building B. Three 1,000 ton induced draft cooling towers with a counter flow configuration are located on the adjacent parking garage. Two-pipe fan coil units (FCU) are used in both the electrical closets and telecommunications closets of both buildings. The heating load requirements of both buildings are met by using the existing campus steam generation plant. The 125 psig supply steam is reduced to either 75 psig or 15 psig through pressure reducing stations located in the basement of Building A. The reduced 75 psig steam is then supplied to a humidification steam generator. The 15 psig steam is fed through heat exchangers which are used for heating hot water or domestic hot water. |