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Demand Control Ventilation Reduces HVAC Load, Saves Cost

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McKenney’s recommended an innovative approach - Demand Control Ventilation - to monitor and adjust the building’s outside air ventilation levels based on ASHRAE 90.1 standards. For more information …

McKenney’s recommended an innovative approach - Demand Control Ventilation - to monitor and adjust the building’s outside air ventilation levels based on ASHRAE 90.1 standards. For more information visit http://www.mckenneys.com.

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  • 1. PROJECT HIGHLIGHTS Demand Control Ventilation Reduces HVAC Load, Saves Costs C olumbia Property Trust has had a longtime commitment to ­ ustainable practices that s maximize energy efficiency and reduce e ­ nvironmental impact on the community. Its 14-story, 353,000-square-foot suburban S ­ olutions (ACS) team for insight and r ­ ecommendations to improve its HVAC ­system efficiency. After thoroughly reviewing the facility, M ­ cKenney’s recommended an innovative approach to monitor and adjust the building’s outside air ventilation levels based on ASHRAE 90.1 standards. The solution involved introducing Demand Control Ventilation (DCV) to monitor the amount of outside air entering the building based on carbon dioxide (CO2) concentrations. CO2 levels continuously fluctuate in a building as its ­population changes. DCV continuously monitors each floor in a building and automatically adjusts outside air ventilation rates. This is achieved by using controls Photo courtesy of Columbia Property Trust and variable frequency drive (VFD) office building in Atlanta had already technology as needed, while still meeting ® achieved ENERGY STAR certification and ASHRAE ventilation standards. By optimizing consistently maintained a score of 87, the amount of outside air coming into the p ­ utting the ­ tructure in the top tier of the s building, there is less air that has to be 15 percent most energy-efficient buildings heated or cooled, resulting in a reduced in the U.S. load on the HVAC system. However, Columbia Property Trust still had room for improvement. With aspirations of achieving even greater energy efficiency, the senior property manager approached the McKenney’s Automation & Control To ensure the solution was as effective as possible for the company, the McKenney’s ACS team installed CO2 monitors in the building, added custom programming for certain aspects of the project and The content of this document is not intended as an endorsement. For more information contact McKenney’s at 404-622-5000. info@mckenneys.com   www.mckenneys.com McKenney’s, Inc.    1056 Moreland Industrial Boulevard, Atlanta, Georgia 30316 Project Team žž Owner: Columbia Property Trust žž General Contractor: McKenney’s, Inc. The Challenge žž Provide energy-saving solutions with quick ROI žž Maintain tenant comfort žž Comply with ASHRAE standards The Solution žž Introduced DCV system to monitor outside air entering building žž Installed CO2 monitors žž Custom programming and r ­ eprogramming of controls The Results žž Average of 65,000 kWh per month energy usage reduction žž Solutions meet ASHRAE standards žž ROI was less than four months žž Comfortable and healthy e ­ nvironment for tenants r ­ eprogrammed the existing controls system to effectively integrate the DCV solution. Since installing the DCV system, the load on the building’s HVAC system has been substantially reduced by an estimated 70 tons on a 70-degree day. In turn, this solution lowered the energy usage for the building by an average of 65,000 kWh per month since installation while maintaining a comfortable environment for tenants. The DCV solution also achieved a quick return on investment (ROI) of less than four months. Copyright © 2013 McKenney’s, Inc., Atlanta, Georgia. All rights reserved. Printed in the U.S.A. McKenney’s, Inc. and the McKenney’s, Inc. logo are registered trademarks of McKenney’s, Inc. All other trademarks are the property of their respective owners.