Authors : Michael Olusegun Adamolekun

Volume/Issue : Volume 11 - 2026, Issue 5 - May

Google Scholar : https://tinyurl.com/4spdfch3

Scribd : https://tinyurl.com/yc6mv54s

DOI : https://doi.org/10.38124/ijisrt/26May362

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : Natural ventilation is widely recognized as an effective passive strategy for enhancing indoor environmental quality and reducing energy consumption in buildings. Cross-ventilation efficiency and indoor air quality (IAQ) are critical components of this strategy. This study presents a qualitative and conceptual analysis grounded in environmental design theory, building physics, and bioclimatic architecture to examine the relationship between building orientation, crossventilation efficiency, and indoor air quality. It explores how the orientation of building envelopes relative to prevailing wind directions influences pressure distribution, airflow pathways, and ventilation rates. These airflow dynamics play a crucial role in pollutant dilution, thermal comfort, and the removal of indoor contaminants. The study integrates theories of environmental aerodynamics, adaptive comfort, and passive design principles to highlight the importance of building orientation as a primary factor influencing ventilation effectiveness. The findings indicate that appropriate building orientation significantly enhances cross-ventilation performance, promotes effective air exchange, and improves indoor environmental quality, thereby reducing reliance on mechanical ventilation systems. The study concludes by advocating for the integration of orientation-driven strategies at the early stages of architectural design to ensure sustainable and energyefficient buildings.

Keywords : Climate, Inlet, Outlet, Airflow, Indoor Air Quality (IAQ), Microclimate, Sustainability.

References :

1. Akubue, J. A., & Adesina, D. O. (2023). The effect of courtyard geometry on airflow regimes for ventilation in tropical Nigerian environment. Journal of Architectural Environment & Structural Engineering Research, 6(4), 1–10. https://doi.org/10.30564/jaeser.v6i4.5951
2. ‎‎Al-Tamimi, N. A., & Fadzil, S. F. S. (2011). The potential of shading devices for temperature reduction in high-rise residential buildings in the tropics. Energy and Buildings, 43(6), 1401–1409. https://doi.org/10.1016/j.enbuild.2011.01.032
3. ‎‎American Society of Heating, Refrigerating and Air-Conditioning Engineers. (2019). Ventilation for acceptable indoor air quality (ANSI/ASHRAE Standard 62.1-2019). ASHRAE.
4. ‎‎Chavas, D., Reed, K., & Knaff, J. (2017). Physical understanding of the tropical cyclone wind-pressure relationship. Nature Communications, 8. https://doi.org/10.1038/s41467-017-01546-9.
5. ‎‎Coquart, J. (2023). Prediction of performance in a 100-km run from a simple equation. PLOS ONE, 18. https://doi.org/10.1371/journal.pone.0279662.
6. ‎‎He, Y. (2023). A literature review of cross ventilation in buildings. Energy and Buildings, 291, 113143. https://doi.org/10.1016/j.enbuild.2023.113143
7. ‎‎Kumar, P., Rawat, N., & Tiwari, A. (2022). Micro-characteristics of a naturally ventilated classroom air quality under varying air purifier placements. Environmental research, 114849 . https://doi.org/10.1016/j.envres.2022.114849.
8. ‎‎Marques, G., Ferreira, C., & Pitarma, R. (2019). Indoor Air Quality Assessment Using a CO2 Monitoring System Based on Internet of Things. Journal of Medical Systems, 43, 1-10. https://doi.org/10.1007/s10916-019-1184-x.
9. ‎‎Mba, E. J., Sam-Amobi, C. G., & Okeke, F. O. (2022). Assessment of orientation on effective natural ventilation for thermal comfort in primary school classrooms in Enugu City, Nigeria. European Journal of Sustainable Development.
10. ‎‎Okonkwo, M. M., Ogwu, I., Umo, U. P., Ononuju, F. I., & Obiadi, B. N. (2022). Natural ventilation architectural design for passive cooling in a multi-purpose building development in Calabar City, Nigeria: A technical report. Irish Journal of Environment and Earth Sciences, 6(6). https://aspjournals.net/Journals/index.php/ijees/article/view/207
11. ‎‎Olasehinde, N., Ajayi, P., & Oloyede, O. (2025). Cooking fuel choices and household respiratory health in Nigeria.. BMC public health. https://doi.org/10.1186/s12889-025-25896-y.
12. ‎‎Rim, D., Schiavon, S., & Nazaroff, W. (2015). Energy and Cost Associated with Ventilating Office Buildings in a Tropical Climate. PLoS ONE, 10. https://doi.org/10.1371/journal.pone.0122310.
13. ‎‎Sani, J., Garba, I., Ahmed, A., & Ahmed, M. (2025). Understanding household smoke exposure risks (SER) in Nigeria: A regional analysis from the 2018 NDHS. BMC Public Health, 25. https://doi.org/10.1186/s12889-025-22556-z.
14. ‎‎Ulrich, S., Hasler, E., Saxer, S., Furian, M., Müller-Mottet, S., Keusch, S., & Bloch, K. (2017). Effect of breathing oxygen-enriched air on exercise performance in patients with precapillary pulmonary hypertension: randomized, sham-controlled cross-over trial. European Heart Journal, 38, 1159–1168. https://doi.org/10.1093/eurheartj/ehx099.
15. ‎‎World Health Organization. (2009). Natural ventilation for infection control in health-care settings. WHO Press.
16. ‎‎Wu, T., Tasoglou, A., Huber, H., Stevens, P., & Boor, B. (2021). Influence of Mechanical Ventilation Systems and Human Occupancy on Time-Resolved Source Rates of Volatile Skin Oil Ozonolysis Products in a LEED-Certified Office Building.. Environmental science & technology. https://doi.org/10.1021/acs.est.1c03112.