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Title: Passive cooling design strategies as adaptation measures for lowering the indoor overheating risk in tropical climates
Authors: Gamero-Salinas, Juan
Monge-Barrio, Aurora
Kishnani, Nirmal 
López-Fidalgo, J.
Sánchez-Ostiz, A.
Keywords: Climate scenario
Natural ventilation
Passive cooling
Semi-outdoor space
Solar heat gain coefficient
Thermal comfort
Thermal resilience
Tropical climate
Wall absorptance
Issue Date: 1-Aug-2021
Publisher: Elsevier Ltd
Citation: Gamero-Salinas, Juan, Monge-Barrio, Aurora, Kishnani, Nirmal, López-Fidalgo, J., Sánchez-Ostiz, A. (2021-08-01). Passive cooling design strategies as adaptation measures for lowering the indoor overheating risk in tropical climates. Energy and Buildings 252 : 111417. ScholarBank@NUS Repository.
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
Abstract: Year-round high temperatures and humidity in the Tropics, coupled with poor design decisions and climate change, can cause indoor environments to overheat, affecting health and increasing energy demand and carbon emissions. Passive cooling could help lower the indoor overheating risk. Given the gap in the relative influence of passive cooling design strategies on lowering the indoor overheating risk in tropical locations, this study investigated their impact in two warm tropical cities (i.e., Tegucigalpa and San Pedro Sula), considering both current and future climate scenarios, with a total of 3840 thermal simulations performed. Indoor overheating risk in apartment-type dwellings was assessed using two metrics (i.e., hours of exceedance and the indoor overheating degree), and considering fixed and adaptive thermal comfort limits. Simulation results show that the overheating risk can be significantly lowered in these tropical contexts using solely passive cooling strategies as heat adaptation measures. Multivariate regression models demonstrate that natural ventilation, wall absorptance, the solar heat gain coefficient, and semi-outdoor spaces have the greatest impact in lowering the risk in vertical social housing projects. This study emphasizes the importance of passive cooling and overheating protection design strategies in tropical building codes and building design while considering current and future risk. © 2021 The Author(s)
Source Title: Energy and Buildings
ISSN: 0378-7788
DOI: 10.1016/j.enbuild.2021.111417
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
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