With installations of 8,000 tons of high efficient electric motor-driven chillers since 2009, chilled water production capacity at the main campus central energy plants is now at 17,000 refrigerated tons, with a future 8,000 ton plant in program slated to begin construction in 2016. The three utility plants, combined with the CHP’s absorption chiller on campus, produce and deliver over 36,000,0000 ton-hours of cooling annually to campus facilities.
The use of centrally located plants benefits UCF by reducing building energy consumption and eliminating less efficient stand alone cooling at each of the 177 buildings. Currently, 73% of our main campus square footage is served by the district cooling loop. The remaining square footage is supported by stand-alone chilled water systems (7%), direct expansion (17%) and ground source heat pumps (3%).
Through capital renewal, UES has also focused on a phase out and reduction of stratospheric ozone depleting refrigerants with our centralized district cooling plants. We no longer use any chlorofluorocarbon (CFC) based refrigerants in our central energy plants. CFC's contribute to the depletion of the stratospheric ozone layer, which is linked to many human health problems.
The thermal energy storage tank (TES) was brought online in October 2010. The TES reduces energy use by taking advantage of cooler ambient conditions at nighttime and running chillers at their optimum conditions. By shifting 2 MW of load from peak to off peak, this energy project reduces approximately 40% of the peak demand for cooling, contributing an average of $320k savings annually.