Project Description
The antiquated wooden cooling towers and pumping system at Union Station were unquestionably energy inefficient as the means to maintain the building heat pump loop in the fall of 2006, but a higher priority for building tenants was the potential loss of heating/air conditioning if the towers failed completely. The City pursued a solution to the problem and put the project out for bid to retrofit the mechanical system. After two bid attempts came back over the available budget, management considered creative financing for the project in the form of a guaranteed energy savings contract. Performance Services was selected to remedy the immediate problem through a GESC project and provide long-term energy savings for the City of Indianapolis.
Building Services
- Services maintained with no major disruption to Union Station and Crowne Plaza tenants
Energy Solutions
- Installed new closed loop towers and eliminated heat exchangers; new equipment maintains loop temperatures during both extreme cold and hot weather
- Motor horsepower significantly reduced
- Replaced pumping system with two primary loops
- Completely re-piped the central plant with new equipment
- Separated Union Station equipment from adjacent Crowne Plaza Hotel
- Installed new web-based digital controls with graphical workstation
- Closed loop system significantly reduces water evaporation
Energy Savings
- Total water savings: $311,152
- Sewer eligible credit: $34,191
- Operational savings projected: $187,520 per year
