G r e e n R o o f s a s P a s s i v e C o o l i n g S t r a t e g i e s
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Figure 9: Heat fluxes measured in the roof slabs (roof types 1,2,4,7) with respect to the total
radiation on 12th August
The distribution of heat flux frequency for the week under consideration (Fig. 10)
highlights the passive cooling effect created by the green roof which shows negative
values (or rather outgoing fluxes) for 40% of the cases.
Figure 10: Frequency distribution of the heat flux through the roofs (types 1,2,4,7) and cumulative
frequency of heat flux on the green roof (type 7) during a summer week (8-13 August 2010)
