Journal article
Assessment of natural ventilation strategies in historical buildings in a hot and humid climate using energy and CFD simulations
Journal of Building Engineering, v 51, 104287
01 Jul 2022
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Interest in the topics of energy efficiency and thermal comfort integrated with building preservation in historic buildings is growing among researchers. Research has determined that an adequate indoor microclimate should be maintained, avoiding abrupt variations between indoor and outdoor environments which could damage artwork, the building itself, and diminish occupant thermal comfort. The novelty of this research is intended to be the use and validation of a simulation model to determine which natural ventilation scenario delivers the most adequate indoor environmental conditions for occupants, artwork, and building preservation on a case study with very particular aspects such as being a listed historic building in a hot and humid climate during the cooling season. The severity of the local climate during the summer months combined with the heritage preservation requirements, create a research gap that this study attempts to reduce. This article presents a three-dimensional Computational Fluid Dynamics and energy model to evaluate the suitability of natural ventilation in a UNESCO World Heritage Site in San Antonio, Texas. The model was calibrated with real monitored data to obtain reliable results from the indoor environmental conditions, simulating three natural ventilation scenarios and eighteen computational models. The results reveal that the mechanical system operation can be decreased, particularly in spring, when the proposed night ventilation scenario is able to keep air temperatures and relative humidity levels within an optimal range for occupant comfort and building and artwork preservation. The results achieved have led to the development of recommendations that will be valuable for the preventive preservation of such historic buildings, without compromising human comfort. This study reveals that this holistic approach can be implemented using natural ventilation and contributes to reduce mechanical systems operation.
•Building natural ventilation strategies are compared in a hot and humid climate.•Natural ventilation optimization helps heritage buildings thermal comfort.•Three ventilation scenarios and eighteen computational models were tested.•Mechanical system operation for cooling can be reduced in Spring.•Thermal comfort in summertime cannot be achieved with only natural ventilation.
Metrics
Details
- Title
- Assessment of natural ventilation strategies in historical buildings in a hot and humid climate using energy and CFD simulations
- Creators
- Ezgi Bay - University of UtahAntonio Martinez-Molina - The University of Texas at San AntonioWilliam A. Dupont - The University of Texas at San Antonio
- Publication Details
- Journal of Building Engineering, v 51, 104287
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Architecture, Design, and Urbanism
- Web of Science ID
- WOS:000777234700001
- Scopus ID
- 2-s2.0-85125704843
- Other Identifier
- 991021889908904721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil