The Thermal and Rainwater Runoff Performance of an Extensive ...
The Thermal and Rainwater Runoff Performance of an Extensive ...
The Thermal and Rainwater Runoff Performance of an Extensive ...
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AbstractThis project addresses the thermal <strong><strong>an</strong>d</strong> rainwater run<strong>of</strong>f perform<strong>an</strong>ce <strong>of</strong> extensivegreen ro<strong>of</strong> systems. Of the three different types <strong>of</strong> green ro<strong>of</strong> system (extensive, semiintensive<strong><strong>an</strong>d</strong> intensive), extensive systems are the most easily established <strong><strong>an</strong>d</strong> providea valid alternative to conventional ro<strong>of</strong>ing materials for most applications.<strong>The</strong> objective <strong>of</strong> the project was to set up a test rig in order to assess the thermalperform<strong>an</strong>ce <strong>of</strong> a commercially available extensive green ro<strong>of</strong> system <strong><strong>an</strong>d</strong> to compareits rainwater run<strong>of</strong>f perform<strong>an</strong>ce with that <strong>of</strong> a perspex sheet (to replicate aphotovoltaic p<strong>an</strong>el).<strong>The</strong> results for the thermal perform<strong>an</strong>ce <strong>of</strong> the green ro<strong>of</strong> were obtained usingLabview Signal Express. <strong>The</strong> results showed that the green ro<strong>of</strong> provided a coolingeffect for the room temperature beneath.Results from the comparison in run<strong>of</strong>f between a green ro<strong>of</strong> <strong><strong>an</strong>d</strong> a ‘PV p<strong>an</strong>el’ suggestthat green ro<strong>of</strong>s have the capability to <strong>of</strong>fset the ‘poorer’ run<strong>of</strong>f perform<strong>an</strong>ce <strong>of</strong> PVp<strong>an</strong>els. This provides <strong>an</strong> additional benefit to the cooling effect on PV efficiency.It was concluded that the comparison <strong>of</strong> run<strong>of</strong>f between green ro<strong>of</strong>s <strong><strong>an</strong>d</strong> PV p<strong>an</strong>elsprovides <strong>an</strong> area for further research to draw more conclusive results.Niall Carroll Page 3<strong>The</strong> <strong>The</strong>rmal <strong><strong>an</strong>d</strong> <strong>Rainwater</strong> <strong>Run<strong>of</strong>f</strong> <strong>Perform<strong>an</strong>ce</strong> <strong>of</strong> <strong>an</strong> <strong>Extensive</strong> Green Ro<strong>of</strong> System
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