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Benefits of Energy Efficient and Low-Global Warming Potential Refrigerant Cooling Equipment

This report quantifies the GHG benefits of implementing aggressive but economic energy efficiency measures (about 30% more efficient than current technology) in air- conditioning (AC) and large commercial refrigeration equipment (CRE) together with low-GWP refrigerants. Shifting the 2030 world stock of room ACs and CRE from current levels of energy- efficiency and high-GWP refrigerants to “economic” energy efficiency levels and low-GWP refrigerants by 2050 would avoid up to 240.1 GT CO2e and shifting to “best-available technology” energy efficiency levels and low GWP refrigerants by 2050 would avoid up to 373 GT CO2e with existing electricity grid emission factors. About two-thirds of this cumulative savings are from reduced electricity sector emissions from improved energy efficiency. Thus, it is highly beneficial to pursue high energy efficiency in concert with the transition to lower GWP refrigerants to achieve maximal GHG reductions with the least amount of equipment re-design and replacement.

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2019

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Lawrence Berkeley National Laboratory

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