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Standardized replicable buildings can cause discomfort and increased air conditioning usage. Besides, super cool coatings are effective passive solutions. Therefore, this study evaluates thermal comfort in a standardized Brazilian public school in 8 climates, verifies suitable super cool coatings and identifies optimal additional passive techniques to meet regulatory requirements without active air conditioning, a topic worthy of investigation. Methods include pilot simulations with DesignBuilder, thermal comfort analysis considering ASHRAE 55 adaptive model; JEA Algorithm optimization simulations; identification of most influential passive strategies by sensitivity analyses; and evaluation of the ideal opaque envelope through heat balance. Results showed that current model do not meet the Brazilian normative. Thus, different super cool coatings are recommended: thermochromic for heating-dominated; spectrally selective for cooling-dominated dry and high broadband emissivity for extreme-cooling-dominated humid zones. Regarding opaque envelope, thermal mass flat roofs and insulated walls are advised. In 7 of 8 climates, super cool roof was most effective followed by natural ventilation. Optimal combinations include super cool envelope, window shading and natural ventilation 24 hours 7 days a week with 95 % of free-aperture for extreme-cooling-dominated zones; super cool roofs, medium reflectivity walls and 5 % of free-aperture for cooling-dominated; thermochromic roof and dark walls with natural ventilation during occupancy with 5 % of free-aperture for heating-dominated.
Correia et al. (Fri,) studied this question.
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