OBJECTIVE:
Operations Evaluation
Due to our extensive experience, Strang was asked to team with WEC Energy Group to evaluate their existing facilities and operations. These ongoing facility conditions assessments, focused primarily on renovating their mechanical and electrical systems. This included existing operational conditions, inspecting code compliance, health, safety, and life cycle stages. The recommendations from the assessments are to be used for long-term planning, maintenance, and replacement of systems and facilities.
Specific focus for WEC has been placed on the following: assessing existing engineered system conditions and maintainability for major utility facilities; assessing monitoring and controllability of mechanical systems; identifying recommendations for life-cycle performance retrofit opportunities; and prioritizing deficiencies and estimated repair costs. Lastly, due to an aging and inefficient chilled water plant serving WEC’s 428,000+ SF headquarters office building, Strang identified their cooling equipment was in desperate need of replacement.
SOLUTION:
Chiller Replacement
Strang engineered a solution to replace the chilled water plant which included two, 300-ton, water-cooled centrifugal chillers and an indoor cooling tower. A primary/secondary piping arrangement was modified to maximize energy efficiency.
The building automation system was also upgraded to allow for complete owner control. Control valves on the indoor air handling units provide for the minimum flow requirements of the chillers. The integration of two air-cooled chillers for the colder months (when the cooling demand is not as significant) reduced overall energy consumption for WEC. This also allowed for better temperature control and equipment life expectancy by more closely matching the required cooling loads.
