Design and construct a ground source community loop heat transfer system (GCLHTS) for the Old Post Historic District (OPHD) of Fort Bragg, NC (230,000 sf). The system will consist of multiple geothermal vertical closed loop bore fields with associated vaults for air purging and balancing, a central horizontal single pipe geothermal loop, and ground source heat pumps/dedicated outside air systems to serve the major buildings of the OPHD of Fort Bragg as part of a comprehensive renovation program to revitalize a highly utilized complex of heritage buildings. There are currently many different HVAC systems in the OPHD with inefficient and outdated air cooled equipment wasting large amounts of energy and increasing maintenance. The GCLHTS now have the capacity to serve the seven major buildings in the OPHD; 2-1105, 2-1120, 2-1127, 2-1133, 2-1138, 2-1728 and 2-1731. Four buildings (2-1127, 2-1133, 2-1728, and 2-1731) were tied into the GCLHTS as part of this project with provisions to tie-in the remaining buildings in the future. Four buildings (2-1127, 2-1133, 2-1728, and 2-1731) were retrofitted with new geothermal heat pump HVAC systems and geothermal domestic water heating systems. Work included demolition of the existing HVAC and related electrical, piping, ductwork, wiring, conduit, controls, and plumbing equipment which are not being re-used in buildings to receive new mechanical systems.
