2012•Journal of Tsinghua University(Science and Technology)Requires access
Experimental study of the thermal performance of a green roof
Kong Gang
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Abstract
The thermal impact on the urban microenvironment of a lightweight aggregate-based green roof was studied by parallel experiments for 10 months to observe the temperatures and estimate the R-value of both green and conventional roofs.During the experimental period,the green roof significantly reduced temperature fluctuations by 54%,provided effective thermal insulation in the winter,protected the roof membrane from rapid heating in the summer,and increased the R-value of the ensemble roof system by 33%~200%.The results show that the green roof is capable of protecting the roof system from extreme temperatures and improving the urban microclimate.