Table of Contents
Journal of Construction Engineering
Volume 2013 (2013), Article ID 940386, 7 pages
http://dx.doi.org/10.1155/2013/940386
Research Article

Thermal Behavior of Green Roofs Applied to Tropical Climate

1Program in Environmental Engineering Sciences, School of Engineering of São Carlos, University of São Paulo (USP), P.O. Box 292, 13560-970 São Carlos, SP, Brazil
2School of Engineering of São Carlos, University of São Paulo (USP), P.O. Box 292, 13560-970 São Carlos, SP, Brazil

Received 19 November 2012; Accepted 5 December 2012

Academic Editor: Eric Lui

Copyright © 2013 Grace Tibério Cardoso and Francisco Vecchia. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The main goal of this paper is to present results on an experimental field about the green roofs thermal behavior, compared to other traditional roof covering systems. On the one hand, it intends to describe shortly the constructive system of a green roof with a lightweight building system, which has a sustainable building materials character and, on the other, it worries with the water reuse and with the run-off delay. The main methodological procedure adopted to study the thermal behavior of green roof was installing thermocouples to collect surface temperatures and indoor air, later comparing them with existing prototypes in an experimental plot. The thermal behavior analysis of cover systems was assessed by a representative episode of the climate fact, based on the dynamic climate approach. The experimental results from internal air temperature measurements show that the green roofs applied to warm and dry climates also provide an interesting time lag with surface and internal air temperature reduction.