DECARBONIZING SPACE HEATING WITH HEAT PUMPS

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DECARBONIZING SPACE HEATING WITH HEAT PUMPS ( decarbonizing-space-heating-with-heat-pumps )

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Figure 2: The heating cycle of an ASHP DECARBONIZING SPACE HEATING WITH AIR SOURCE HEAT PUMPS HEATING CYCLE Outdoor heat exchanger Evaporator mode Heat absorbed from outside OUTDOOR Figure 3: The cooling cycle of an ASHP Outdoor heat exchanger Condenser mode Heat dumped to outside OUTDOOR In 2015, roughly 10 percent of US households (roughly 12 million homes) used heat pumps as their primary heating source.11 In 2012, just over 11 percent of US commercial buildings used heat pumps.12 ● Heat pumps are most commonly found in the southeastern United States, where the climate is hot and humid, winter temperatures are mild and electricity is relatively cheap. Compressor Expansion valve INDOOR Heat added to inside Indoor heat exchanger Condenser mode COOLING CYCLE Compressor Expansion valve INDOOR Heat absorbed from inside Indoor heat exchanger Indoor heat exchanger Condenser mode Evaporator mode ENERGYPOLICY.COLUMBIA.EDU | DECEMBER 2019 | 13

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DECARBONIZING SPACE HEATING WITH HEAT PUMPS

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HeatPump-CGEP_Report_010220.pdf

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