Occupancy impact on air quality in repurposed museum spaceGruden, Lucija (Avtor) Stritih, Uroš (Avtor) air qualityventilationCO2aerosolsindoor environmentThis study investigates the air quality and ventilation effectiveness in a repurposed museum space with a hybrid ventilation system in Ljubljana, Slovenia. Focusing on $CO_2$ and particulate matter concentrations, the aim is to determine the correlation between these parameters and the suitability of the ventilation system following a change in space use. Measurements were conducted over a four-month period, analyzing data during different occupancy and ventilation scenarios. The study compares observed values with World Health Organization (WHO) guidelines, specifically targeting ${PM_{2.5}}$, ${PM_{10}}$, and $CO_2$ concentrations. Findings reveal inadequate ventilation in the repurposed museum space, even with hybrid ventilation. $CO_2$ concentrations correlated with ${PM_{2.5}}$ and ${PM_{10}}$ levels, suggesting $CO_2$ monitoring as an indirect indicator of overall air quality. Recommendations include improving ventilation efficiency and limiting occupancy to ensure adherence to air quality standards.20242025-12-01 10:48:37Članek v reviji176447sl