McKenney's, Inc. Recommends Demand Control Ventilation (DCV) to Improve HVAC Energy Efficiency

McKenney's, Inc. Recommends Demand Control Ventilation (DCV) to Improve HVAC Energy Efficiency

Columbia Property Trust is one of the nation's largest office real estate investment trusts (REITs) committed to sustainable practices that maximize energy efficiency and reduce environmental impact on the community. They have become an industry leader in sustainability in many ways, including being named a 2013 ENERGY STAR® Partner of the Year by the U.S. Environmental Protection Agency.

With aspirations of achieving even greater energy efficiency, they approached the McKenney's Automation & Control Solutions (ACS) team for insight and recommendations to improve its HVAC system efficiency. McKenney'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 and variable frequency drive (VFD) technology as needed, while still meeting ASHRAE ventilation standards. By optimizing the amount of outside air coming into the building, there is less air that has to be heated or cooled, resulting in a reduced load on the HVAC system.

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 reprogrammed the existing controls system to effectively integrate the DCV solution.

Project Team
* Owner: Columbia Property Trust
* Contractor: McKenney's, Inc.

The Solution
* Introduced DCV system to monitor outside air entering building
* Installed CO2 monitors
* Custom programming and reprogramming of controls

The Results
* Average of 65,000 kWh per month energy usage reduction
* Solutions meet ASHRAE standards
* ROI was less than four months
* Comfortable and healthy environment for tenants

Since 1948, the mission of McKenney's has been to meet or exceed customer expectations on every job they perform. The company offers expertise in HVAC, process piping, plumbing, and building automation and control systems, as well as service and maintenance. They have their own in-house engineering, fabrication, installation, and commissioning resources to ensure cost-effective delivery of the highest quality solutions.

Services Offered:
* Preconstruction
* Engineering solutions
* New construction
* Tenant and special projects
* Automation and controls
* Commissioning
* Service and maintenance

McKenney's has developed services and expertise to serve their customers at every stage -- Design, Build, Manage and Maintain. Self-performance of all trades, in-house shops and over 60 years of experience ensures top-quality solutions every time you work with McKenney's.

About Us:
McKenney's is the Southeast's most trusted name in facility construction, operation and maintenance. For more than six decades, our proven approach has ensured high-quality, energy-efficient solutions at every stage of a building.

Contact Us:
McKenney's, Inc.
1056 Moreland Industrial Boulevard
Atlanta, Georgia 30316

3601 Performance Road
Charlotte, North Carolina 28214