Transport-limited airflow calculations show cities and HVAC systems could remove >1 GtCO2/y using literature lab efficiencies, with HVAC costs potentially as low as $600/tCO2 if scaled.
Role of air changes per hour (ACH) in po ssible transmission of airborne infections
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Harnessing natural and mechanical airflows for surface-based atmospheric pollutant removal
Transport-limited airflow calculations show cities and HVAC systems could remove >1 GtCO2/y using literature lab efficiencies, with HVAC costs potentially as low as $600/tCO2 if scaled.