Omaha Public Power District Energy Systems Lab (ESL) at UNL Energy Commissioning and Optimization (ECO 24/7 SM ) Case Study Facility: Peter Kiewit Sons, Inc. – Kiewit Plaza, Omaha, NE Energy Commissioning and Optimization Services (completed in September 2006) ? Optimized controls for AHUs, including static pressure reset, outside air control, and supply air temperature reset ? Commissioned all terminal boxes ? Implemented dynamic airflow reset in terminal boxes ? Implemented ECO 24/7 SM Pump Flow Stations for chilled and condenser pumps ? Optimized primary, secondary and condenser pump control ? Implemented ECO 24/7 SM Fan Airflow Stations for AHUs Benefits ? Reduced comfort complaints and maintained building comfort 24 hours per day, seven days per week ? Improv

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