A major utilities reconfiguration was based on a central plant assessment completed several years earlier by GBA. Phased projects resulted in major improvements to this 1,260-room luxury hotel in Atlanta's city center, encompassing about 1.5 million square feet in three towers.
The prior configuration consisted of one chiller room, one mechanical room with an additional chiller and a low-pressure steam boiler plant, and a third mechanical room containing a high-pressure steam boiler plant. The two chiller plants were consolidated into a single plant, and the two steam boiler facilities were consolidated into a single low-pressure facility. Overall energy use for the hotel has dropped from 123,000 MMBtu/yr to 110,000 MMBtu/yr, a 10.6% decrease. Reductions represent an annual electrical cost savings of $103,900, plus measured gas cost savings of $52,930 for the first 10-month period following completion of the boiler plant project. The renovation conserves water and also removed equipment with CFC refrigerants that contributed to ozone depletion.
|ASHRAE Illinois Chapter||2014 Excellence in Engineering Award|