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Figure 1: Primary heating fuel choice, 2005-2013 75% 50% 25% 0% natural gas electricity fuel oil+ kerosene LPG other/none 2005 2013 2005 2013 2005 2013 2005 2013 2005 2013 United States Northeast Midwest South West Note: Natural gas is the primary heating fuel by a large margin in most of the United States, yet its market share is declining everywhere but the Northeast, where it is offsetting fuel oil and kerosene. Source: US Energy Information Administration, based on the Census Bureau American Community Survey Commercial buildings rely more on electricity for heating. In 2012, at least some portion of about 60 percent of commercial buildings were heated with electricity, 55 percent with natural gas, and 15 percent with fuel oil, propane, solar, or biofuels.8 A significant percentage of commercial buildings combined fuels. Electricity and natural gas each heated about 50 billion square feet of commercial buildings (about 44 percent of total floor space each). DECARBONIZING SPACE HEATING WITH AIR SOURCE HEAT PUMPS ENERGYPOLICY.COLUMBIA.EDU | DECEMBER 2019 | 11PDF Image | DECARBONIZING SPACE HEATING WITH HEAT PUMPS
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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