Florida Power & Light upgraded their existing hvac system to use Armstrong Design Envelope pumps. As a result they have reduced the energy costs for select pumps by as much as 68%, saving thousands of dollars per year.
Background
Florida Power & Light Company is the largest electric utility in Florida and the third largest rate-regulated utility in the United States, serving over 4 million customer accounts. A clean energy leader, FPL has one of the lowest emission profiles and one of the leading energy efficiency programs of all US electric utility companies. FPL Headquarters, located in Juno Beach, FL is a 900,000 ft2 facility housing 2500 employees. The campus consists of five buildings served by three chiller rooms. Although the facility had already achieved LEED Gold status in 2011, it was clear that the existing 22-year-old HVAC system was not operating properly, as there were many occupant complaints regarding slow response to cooling demand. Investigation of the system revealed that the chiller ∆t was almost 25 degrees, where in most circumstances 8 – 12 degrees is the norm. This indicated that the chiller was working excessively hard to cool the facility.
