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Research Article

Effects of solar reflectance and infrared emissivity of rooftops on the thermal comfort of single-family homes in Mexico

Jorge Lucero-Álvarez1, Ignacio R. Martín-Domínguez2( )
Advanced Materials Research Center (CIMAV-Chihuahua), Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109 Chihuahua, Chih. Mexico
Advanced Materials Research Center (CIMAV-Durango), Victoria 147 Norte, Zona Centro, 34000 Durango, Dgo. Mexico
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Abstract

This study developed a series of thermal simulations of buildings under the climatic conditions of 20 cities in Mexico. Thermal comfort was analyzed to examine how it is affected by variations in the solar reflectance and infrared emissivity of the exterior surface of a roof in reference housing. The percentage of uncomfortable hours per year was defined in terms of the PPD index (Predicted Percentage of Dissatisfied) as the fraction of time in which PPD > 20%. Optimal combinations were determined for each city, and it was found that the major effects of the solar reflectance and infrared emissivity occur in cities featuring climates whose ambient temperature is not far away from the comfortable temperature range. The maximum reduction of percentage of uncomfortable hours due to combined effect of solar reflectance and infrared emissivity ranging from 1.9% to 40.6%.

Keywords

building simulationthermal comfortroof solar reflectanceroof infrared emissivity

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Building Simulation
Volume 10 Issue 3,
June 2017
Pages 297-308
DOI: 10.1007/s12273-016-0331-2
Cite this article:
Lucero-Álvarez J, Martín-Domínguez IR. Effects of solar reflectance and infrared emissivity of rooftops on the thermal comfort of single-family homes in Mexico. Building Simulation, 2017, 10(3): 297-308. https://doi.org/10.1007/s12273-016-0331-2

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Received: 25 April 2016
Revised: 19 August 2016
Accepted: 13 October 2016
Published: 08 November 2016
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016
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