Simplified Thermal Calculating Design Tool for Pre-Designing of Air Flow for Ventilation and Indoor ClimateJørgen Erik Christensen, Diana Shorsh Osman Faris, Ayesha Mah-Noor Jhoja and Joan F. GimenoE3S Web Conf., 362 (2022) 03001DOI: https://doi.org/10.1051/e3sconf/202236203001