systems design and construction phase services for a 90,000 sq. ft.
housing complex comprised of 10 different sorority houses. The
Complex is expected to achieve
Mechanical Contractor McKenney's
Prime Consultant Jova Daniels Busby
The complex utilizes a variable
refrigerant flow system comprised of 18 outdoor units
serving 180 indoor fan coil units. Each indoor fan coil
unit has its own thermostat and is capable of either heating
or cooling function independent of any other indoor unit.
Outside air is directly
delivered to each occupied space in the complex via one of
three tempered energy recovery units (TERV) that contain
electric preheat, direct expansion cooling with hot gas
reheat, and enthalpy heat wheel components. Each TERV uses
variable frequency drives and a medium pressure supply duct
distribution system with variable volume terminal units.
Constant outside air is provided to the individual sleeping
spaces, while outside air to group spaces is modulated using
carbon dioxide sensors.
Hot water is provided by two
1,000 MBH input natural gas domestic hot water boilers and
stored in two separate 500 gallons tanks.
A new 1250 GPM fire pump
provides 100 psi at the top of the most remote standpipe as
mandated by code.
Mechanical systems efficiencies
meet or exceed Earthcraft Certification standards.
Due to very limited plenum
space, mechanical systems above the ceilings were minimized.
Building automation system
monitors both hot and cold water consumption as well as
power usage/demand for each Sorority for billing purposes.