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This energy project included replacing the clients ageing insufficiently-
sized air handling unit equipment on the roof of the building and installing new
HVAC ductwork and piping as well as air handling units into a new mechanical room inside the 45th floor.
This challenging project involved new DDC controls and fire alarm system modifications. In addition, McKinstry installed demand controlled garage ventilation, and variable speed
escalator controllers. In general, the existing make-up air units for the
building was a constant volume design which did not supply adequate air conditioned air, this was replaced with two new units located indoors on the 45th floor and we also added variable frequency drives to reduce air flow during low load times. The demand controlled garage ventilation system utilizes CO sensors and VFDs to adjust the supply and exhaust air in the garage to the actual amount needed. The
escalator drive controllers adjust the torque output of the escalator motors based on the number of people on the escalator at any given time.
The project benefits include increased occupant comfort and significant energy savings. |
US Bank
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