Friday, January 18, 2019

The Future of Air Conditioning for Buildings

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The Building Technologies Office (BTO) within the Department of Energy’s (DOE) Office of Energy Efficiency and Renewable Energy works with researchers and industry to develop and deploy technologies that can substantially reduce energy consumption and greenhouse gas (GHG) emissions in residential and commercial buildings. Air conditioning (A/C) systems contribute GHG emissions both directly through refrigerant leakage and indirectly through fossil fuel combustion used to generate electricity to power the systems. BTO aims to facilitate research and development (R&D) on advanced HVAC technologies that support a phasedown of refrigerants that contribute to global warming, such as hydrofluorocarbons (HFCs), while also driving down lifecycle cooling costs over time through greater energy efficiency.

List of Acronyms
Executive Summary
1. Introduction
2. Current and Projected Air Conditioning Usage
3. Global Warming Contributions
4. Low-GWP Refrigerants
5. Energy Efficiency Improvements
6. Cost of A/C Ownership
7. Technology Outlook for Long-Term Options
8. Regulatory Environment
9. Conclusions
Appendix A: System Descriptions
Appendix B: Methodology to Estimate Greenhouse Gas Emissions from A/C Systems
Appendix C: Low-GWP A/C Equipment Status

Author Details
"W. Goetzler", 
"M. Guernsey", 
"J. Young", 
"J. Fuhrman" 
Navigant Consulting, Inc.

"O. Abdelaziz", PhD

Oak Ridge National Laboratory

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