Project Overview

Project: Swem Library Special Collections (HVAC Upgrade)

Owner: The College of William & Mary, Swem Library

Location: Williamsburg, VA

Project Type: HVAC Upgrade

Construction Type: Traditional

Description: Greenland was the Construction Manager responsible for upgrading the HVAC system for the Swem Library Special Collections at The College of William and Mary in Williamsburg, VA. The Swem Library Special Collections area houses important historical documents as well as documents pertaining to the College itself. A problem arose when heat from the boiler plant, installed beneath this area of the library, penetrated the floor, and the temperature/humidity could not be maintained at the level required for proper document storage. The engineered solution was to install a dedicated outside air system that provided 2,000 CFM of very dry air at roughly 50 degrees. This air mixed with the return air from the space, and the AHU discharged 8,000 CFM of this conditioned air to the special collections area of the library. Furthermore, a humidifier and variable frequency inverters were installed on the supply/return fans of the AHU; DDC controls were installed for control and alarm functions; and a transfer fan was installed to move heat from the boiler end of the mechanical room to the chiller end so that the exhaust fan could remove it from the space.