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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Climate Change Impact on Natural Ventilation Cooling Effectiveness Using CFD Simulations in Low Thermal Mass Historic Buildings
AU - Iskandar, Layla
AU - Faubel, Carlos
AU - Bay-Sahin, Ezgi
AU - Martinez-Molina, Antonio
AU - Beeson, Saadet Toker
PY - 2025/3/17
Y1 - 2025/3/17
N2 - Extreme climate events and global warming significantly affect energy retrofit planning, underscoring the need to consider future climate scenarios. This study evaluates the effectiveness of natural ventilation as a passive cooling strategy for a low-thermal mass building in a hot-humid climate, considering current and future weather conditions throughout this century. Using energy and Computational Fluid Dynamics simulations validated with in-situ data, the research evaluates three natural ventilation strategies: full, cross, and stack ventilation. Results demonstrate that natural ventilation reduces indoor air temperature compared to non-ventilated scenarios but faces challenges in maintaining indoor comfort levels during extreme external temperatures and under future climate scenarios. Full ventilation is most effective during cooler periods, while cross ventilation significantly enhances airflow across spaces. Stack ventilation shows potential in expelling hot air through vertical shafts, but its effectiveness is challenged during extreme heat events. These findings underscore the need for adaptive retrofit solutions, such as leveraging existing systems, implementing operational changes, and integrating shading devices to mitigate heat gain. Additionally, the study emphasizes the importance of combining passive strategies with mechanical systems to enhance energy efficiency and occupant comfort in historic buildings while addressing the anticipated impacts of climate change.
AB - Extreme climate events and global warming significantly affect energy retrofit planning, underscoring the need to consider future climate scenarios. This study evaluates the effectiveness of natural ventilation as a passive cooling strategy for a low-thermal mass building in a hot-humid climate, considering current and future weather conditions throughout this century. Using energy and Computational Fluid Dynamics simulations validated with in-situ data, the research evaluates three natural ventilation strategies: full, cross, and stack ventilation. Results demonstrate that natural ventilation reduces indoor air temperature compared to non-ventilated scenarios but faces challenges in maintaining indoor comfort levels during extreme external temperatures and under future climate scenarios. Full ventilation is most effective during cooler periods, while cross ventilation significantly enhances airflow across spaces. Stack ventilation shows potential in expelling hot air through vertical shafts, but its effectiveness is challenged during extreme heat events. These findings underscore the need for adaptive retrofit solutions, such as leveraging existing systems, implementing operational changes, and integrating shading devices to mitigate heat gain. Additionally, the study emphasizes the importance of combining passive strategies with mechanical systems to enhance energy efficiency and occupant comfort in historic buildings while addressing the anticipated impacts of climate change.
U2 - 10.1080/15583058.2025.2471980
DO - 10.1080/15583058.2025.2471980
M3 - Journal article
JO - International Journal of Architectural Heritage
JF - International Journal of Architectural Heritage
SN - 1558-3066
ER -