IES Consulting used the IESVE Apache HVAC tool to model multiple HVAC system types ranging from single zone to Under Floor Air configurations for this multi-storey development.
The tower section of the building accounts for the vast majority of the total building floor area and is primarily conditioned by custom built VAV UFAD (underfloor air distribution) dual path multi-zone systems.
Each tower floor is served by two separate UFAD systems split into east west zoning arrangement. This unique system was explicitly modeled using the IESVE.
All HVAC cooling coils are served by chilled water at 40oF supply, with a design return temperature of 56oF. Chilled water is generated by four centrifugal water cooled chillers with multi stage compressors (3 x 1100ton & 1 x 400ton). Cooling tower fans & condenser pumps are of a VSD type. Chilled water is circulated via a number of secondary side VSD pumps. All heating is provided via direct electric heating coils.
The building consists of the following energy conservation measures (ECM’s):