Due to the age of KEC’s inefficient steam boiler plant, a complete replacement system was required. CMTA was careful to install a system that fit the needs of this facility, including 15 new condensing gas hot-water boilers, hot water pumps, and boiler accessories.
In addition to the challenge of aging infrastructure, this facility also had a unique energy usage profile. Being an exposition center, load peaks do not follow a typical 9-5 schedule. Instead, events like the Kentucky State Fair drive large spikes in electric usage. These spikes result in minimum demand charge “ratchets” that in the past penalized KEC’s electric bill.
Before this project, the impact of the Kentucky State Fair elevated minimum demand charges for the next eleven months. CMTA’s “peak shaving” demand reduction strategies included converting constant volume air handling units to single-zone variable volume AHUs, adding duty-cycle controls, replacing electric domestic water heating and electric space heating with condensing natural gas appliances, and installing carbon dioxide-based demand ventilation controls to produce reduced cooling loads.
Phase 2 included electrical, HVAC, infrastructure, and plumbing system upgrades to the North, South, and West Wings, East and West Halls, Freedom Hall, New Market Hall, and Broadbent Arena, all 100% funded from savings. CMTA renovated the entire chilled water system, including the replacement of three chillers totaling 3,050 tons, converted the chiller system to a variable primary pumping strategy, and installed 3,000 feet of 12-inch chilled water pipe throughout the exhibit space. This chiller plant interconnection scope linked the South Wing and West Wing chilled water piping, so that the South Wing chilled water plant could serve the entire KEC main facility.
A comprehensive interior and exterior LED lighting renovation across the entire KEC campus included upgrades to almost 25,000 fixtures. Additionally, the aged and inoperable lighting control system was replaced with a new web-based system with occupancy sensors that controls all interior and exterior fixtures and allows dimming, thus saving energy.