CO 2 -Based Demand-Controlled Ventilation and Energy Performance in a School Classroom in Kraków: A Case Study. - Nowak-Dzieszko, Katarzyna; Mijakowski, Maciej; Müller, Jarosław; Kozak-Jagieła, Ewa; Wargocki, Paweł (Energies (19961073), 2026)