Experimental investigation of summer thermal performance of the green roof system with mineral wool substrate

被引：21
作者：
Kostadinovic, Danka [1 ]
Jovanovic, Marina [1 ]
Bakic, Vukman [1 ]
Stepanic, Nenad [1 ]
Todorovic, Maja [2 ]
机构：
[1] Univ Belgrade, Vinca Inst Nucl Sci, Dept Thermal Engn & Energy, Natl Inst Republ Serbia, Mike Petrovica Alasa 12-14,POB 522, Belgrade 11000, Serbia
[2] Univ Belgrade, Fac Mech Engn, Kraljice Marije 16, Belgrade 11000, Serbia
来源：
BUILDING AND ENVIRONMENT | 2022年 / 217卷
关键词：
Cooling effect; Green roof; Heat flux; Pearson correlation; Thermal performance; Mineral wool; ENERGY PERFORMANCE; VEGETATION TYPE; CONSUMPTION; MITIGATION; BENEFITS; IMPACT; GARDEN; PERIOD; DEPTH;
D O I：
10.1016/j.buildenv.2022.109061
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Green roof systems have become an important part in creating sustainable cities. They can provide a wide range of economic, environmental, and social benefits. The goal of this research was to quantify the thermal performance improvements from a green roof with mineral wool substrate installed on a school building in a humid subtropical climate. In-situ measurements during a summer period included heat fluxes through the green and reference roof, vertical temperature profile through both roofs, the local air temperature above roofs, and local meteorological parameters. Furthermore, the summer thermal performance of green and reference roof and the green roof cooling effect were evaluated concerning meteorological parameters using the Pearson correlation analysis. The results indicate that the green roof layers have improved thermal performance of the roof with respect to reduced conductive heat flow by 57% and delayed heat transfer. The maximum and averaged reference roof to green roof outdoor surface temperature difference was 27.5 degrees C and 5.5 degrees C, respectively. It was found that ambient temperature and relative humidity have a dominant role on the thermal performance of the green and reference roof, while solar radiation and ambient temperature present the key meteorological determinants of the green roof cooling effect.
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页数：9
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