Case StudyIU Health Gateway Building

EGAEdward George & Associates

Optimization Energy Savings

Return on Investment

$7.44 saved for every dollarspent after 3 years

Energy Consumption

25% or 2.5 million kWhsaved over baseline year

Energy Intensity

120 kBTU/ft2 in 2014 to89 kBTU/ft2 in 2017

In 2015, Indiana University Health engaged EGA to work on theirrecently acquired Gateway building located at 950 N MeridianStreet. The building is managed by REI Real Estate.

Building characteristics:

• 12-story mixed-use medical office building

• Built in 1988

• Honeywell Spyder and Niagara AX controls

• 24 primary air handlers, 10 supplemental air handlers

• Approximately 350 single duct and fan-powered variable airvolume boxes with electric resistance heat

• Chiller plant with 3 chillers and dry cooler for year-roundmechanical cooling

Primary optimization began in Febrary 2014 and was completed in in early 2016. Improvements in the buildinginclude: reprogramming all VAV boxes to improve airflow distribution and minimize air flow when spaces are at thecorrect temperature; modifications to the static pressure at the air handlers to minimize fan usage; installation of anew high efficiency chiller and modification of the chilled water loop to variable flow; and repairs and additions tothe make-up air handler heater to improve outdoor air flow to the building. Additionally, one floor of the buildingis newly renovated, abandoned equipment was brought back into service to improve space comfort control, andthe control system was updated to Niagara 4.

EGA continues to work with IU Health and REI on energy saving projects, including: reuse of existing unusedequipment to improve space comfort control, and the addition of economizer capability to the air handlers servingthe lobby and cafe.

Contact Us!www.egallc.net

Prepared by V. CoulterJune 6, 2018