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Higher Education
Emory University
Michael Dennis & Associates
Cossentini Associates
Negotiated
67,000
The building was provided with seven air handling units dedicated to the following specific areas: concert hall seating, concert hall stage, lab theater, instrument rehearsal, dance area, lobbies and back stage. The A/C systems were medium pressure VAV type to be able to provide strict temperature and humidity control of the spaces. All air handling units were installed in the two dedicated mechanical rooms located in the basement.
The chilled water and steam for preheat and cooling coils as well as steam for the humidifiers were provided from the Emory campus physical plant. Two pressure reducing stations were implemented to use low pressure steam in the building.
All systems serving the sound-critical areas were provided with sound attenuation equipment. The air distribution systems were incorporated into the architectural background to minimize the aesthetic impact.
Mechanical and support areas were provided with spot cooling using several fan coil units.
The mechanical room was provided with a condensate pumping system to return the condensate back to the main physical plant.
Emory University
Stang & Newdow/ Ayers, Saint, & Gross
Barrett Woodyard
Negotiated
91,000
The project included two new buildings, the Pavilion three-story building and the Administration building with five stories.
The Pavilion building has been provided with air conditioning systems to serve the auditorium, case study auditorium and the classrooms on the third floor. The Plaza level amphitheater was provided with dedicated constant volume air system.
The other two floors were equipped with medium pressure VAV type air handling system. The air was distributed using parallel and series type power induction units equipped with hot water reheat coils. The plumbing system provided waste and vent system to the toilets’ mechanical rooms and admin areas. Hot water, cold water and hot water recirculation piping systems were installed to support the toilets and the other miscellaneous users.
The Administration building has been provided with air conditioning systems to serve the classrooms, laboratories, lounges, offices, and support areas located on the five floors.
All air handling units were equipped with cooling, heating and filtration capabilities. The units were provided with common outside air shaft. The OA was delivered by one supply fan provided with filtration capability and variable frequency drive to match the demand of all units at any time.
The air handling units were medium-pressure VAV type. The air was distributed on all floors using fan-powered units equipped with hot water reheat coils. The telecommunication rooms located on each floor were equipped with dedicated fan coil units to match the cooling demand and maintain the operational status of the room.
The chilled water was supplied by the campus Micheal Street energy plant.
To satisfy the demand for heating hot water for the Pavilion and the Administration buildings, a new steam-fired shell and tube heat exchanger was installed. New hot water, end suction type circulation pump was provided.
The plumbing systems included waste and vents, cold water, hot water, and hot water recirculation systems for the toilets, break rooms, lounges, and mechanical rooms. Electric domestic hot water heaters were provided.
Emory University
Lord, Aeck, & Sargent
Nottingham, Brooke, & Pennington
McCarthy Building Companies
Negotiated
60,000
The scope of the project included the complete renovation of the fourth floor of the Emory University School of Medicine. Also included was the extensive renovation of the fifth floor penthouse.
The new floor layout included several wet and dry laboratories, isotopes laboratories, two BSL-3 laboratories, decontamination room, offices, microscope, computer and dark rooms.
Most of the laboratories included fume hoods or bio-safety cabinets or both.
The equipment provided for this project included:
The project included selective demolition of the existing laboratory areas, mechanical chases, and removal of the existing mechanical systems and air distribution systems.
The new mechanical system consisted of the following pieces of equipment:
The fourth-floor VAV system has a dual purpose. One is to provide cooling or heating of the entire floor, and the second is to provide make-up (displacement) air for the equipment that needs exhaust.
To reduce energy consumption, the system was provided with an enthalpy energy recovery wheel to extract the energy from the exhaust system and transfer it to the outside air stream.
The new plumbing system included: