Student Center Commissioning Services - Tidewater Community College, Virginia Beach, VA
The Virginia Beach Student Center is a three story, 89,500 square-foot facility actually built over top of a man-made water feature (storm water management pond). The first floor houses a dining facility, bookstore and child care areas. The second houses basketball court, fitness center, shower rooms, gaming lounge, multi-purpose rooms, and student lounge. The third floor houses meeting rooms, student lounge, multi-use conference center, and mechanical room. All floors include auxiliary spaces such as janitor closets, stairs, electrical rooms, toilets including handicap.
The mechanical system is variable-air volume (VAV) systems serving single duct terminal units with hydronic reheat coils. Each air handling unit includes an enthalpy wheel to reduce sensible and latent loads during heating and cooling operation. In addition, the units equipped with enthalpy wheels would have inline exhaust fans associated with each unit. Air handling units include economizer operation. Medium-pressure ductwork from the air-handling units serve each terminal unit. Low-pressure ductwork from each terminal unit serve ceiling diffusers and wall/ceiling grilles. The above-ceiling space is used as a return air plenum. A supplemental heating system in the form of perimeter pedestal-mounted fin-tube radiation is provided to offset perimeter heat loss.
Chilled water is generated by two air-cooled rotary screw chiller with each chiller sized for 100% of the block cooling load. Chilled water coils in the air handling units are served by two variable-speed pumps in a variable-primary pumping arrangement. Two gas-fired, condensing type boilers provide hot water for the building. Hot water coils in the air handling units and the reheat coils in the terminal units will be served by two variable-speed pumps in a variable-primary pumping arrangement.
A central building automation system allows control of the mechanical systems locally and remotely through the existing college network. The control system includes monitoring of the electrical lighting and power systems as well as extensive data collection, archiving and trending in order to comply with LEED requirements for measurement and verification of system performance.
The commissioning on this project is both LEED Fundamental and Enhanced and includes the HVAC systems, controls, domestic hot water system, and lighting controls.
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