Pennsylvania Trolley Museum

Allen + Shariff provided MEP/FP/Security engineering design services for a new, one-story, 21,000 square foot museum with Grand Entry Hall, museum store, trolley simulator, trolley era gallery, innovators and innovations gallery, classroom, event rooms, and theater.

The building’s mechanical system consisted of an outdoor ground mounted multizone variable air volume (VAV) natural gas fired heating and DX cooling packaged air handling unit. The ground mounted unit delivered supply air at 55 degrees Fahrenheit to eighteen individual thermal zones throughout the facility for thermal control to offices, event rooms, exhibits, entry halls, storage rooms and classrooms. Each thermal zone was designed with a single duct VAV box with a hot water coil for reheat of the supply air temperature.

The hot water reheat plant consisted of a single 600 MBH condensing type high efficiency low temperature boiler and primary/secondary hot water loops with a set of parallel inline centrifugal circulation pumps controlled by differential pressure sensor to control the building loop.

All equipment was incorporated into the building’s new building automation system and energy management system to provide remote monitoring, feedback, and load shedding during peak electricity utility rate periods.

The center is served by a 600A, 480/277V electrical system that is fully backed up by an exterior 250 kW emergency generator system. Primary power is supplied from the existing PTM substation on site. The infrastructure of the power distribution system also has the capability to tie into a future PV array planned for on-site. The smart lighting system utilizes dimming capabilities in all areas of the building. Facility personnel can easily adapt the lighting based on time of use schedules or actual attendance and environmental conditions.

Project Details

Client: Desmone Architects

Square Footage: 21,000

Services: MEP Engineering

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