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Estimating CO2 Emissions Reductions With EnergyPlus for an Office Building in Salt Lake City

[+] Author Affiliations
Stephen M. Lucich, Amanda D. Smith

University of Utah, Salt Lake City, UT

Paper No. ES2014-6560, pp. V002T11A005; 10 pages
  • ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
  • Volume 2: Economic, Environmental, and Policy Aspects of Alternate Energy; Fuels and Infrastructure, Biofuels and Energy Storage; High Performance Buildings; Solar Buildings, Including Solar Climate Control/Heating/Cooling; Sustainable Cities and Communities, Including Transportation; Thermofluid Analysis of Energy Systems, Including Exergy and Thermoeconomics
  • Boston, Massachusetts, USA, June 30–July 2, 2014
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4587-5
  • Copyright © 2014 by ASME


This research estimates the achievable CO2 emissions reductions for a medium sized office building located in Salt Lake City, Utah. Four strategies that required minor retrofits or changes to a building’s operational controls were considered: automatic window shading, changes in window construction, lighting intensity, and temperature setpoint adjustment. Since 70% of energy consumed by the building sector is for heating, cooling and lighting, the methods introduced were targeted to reduce these sources of demand. The model building used was selected from the U.S. DOE’s commercial reference buildings. The simulations were run using the DOE’s EnergyPlus building energy modeling software and a TMY3 weather data file for Salt Lake City. The effect of these possible building changes on energy consumption and the CO2 emissions resulting from the production of this energy were examined. The impact of the automatic window shade was the lowest of the strategies considered with a 1% reduction in GHG emissions. This is likely the result of a low solar irradiation area to building volume ratio and should be explored for smaller residential and commercial buildings. Window construction was more promising with GHG emissions reductions between 2% and 6%. Lighting strategies and altered temperature set points demonstrated GHG emissions reduction of up to 15%. This research establishes a technique to evaluate building emissions reductions with respect to location, building construction, and operation.

Copyright © 2014 by ASME



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