Page 49 - 2014 SDCA Project

Another key criterion for assessing the three design scenarios is size, cost, and

complexity of the building’s HVAC system. Minimizing the size and complexity of
the HVAC system will be beneficial in reducing the first cost of construction,
delivering a system that can be more easily maintained, and mitigating the eventual

HVAC system replacement costs—since the building will outlast the best
mechanical equipment several times over.

The energy consumption profile for each of the design scenarios are indicated

below.
The operating costs for each of the three design criteria were assessed by simulating

the common Georgia Power and AGL utility tariffs using EnergyPlus. In each of the
three design scenarios, the optimal electricity rate structure was Time of Use – Energy
Only.

ASHRAE 90.1-2007 DATA

47 SDCA