The Glass-Glass Aesthetic Energy Roof : Thermal Behavior for Various Ventilation Levels
conference paper
The ‘Aesthetic Energy Roof’ (AER) concept is an aesthetically pleasing building integrated photovoltaic (BIPV) roof concept based on the patent-pending idea to use the photovoltaic glass itself for the watertight connection between the PV panels. In this paper we will investigate the thermal properties of the AER concept. We followed an approach of analytic modeling and outdoor measurements, the latter for which roof sections of 7 m2 each were constructed and a direct comparison between ‘on-roof’- and ‘in-roof’-mounting was made. From the model we have quantified the heat flows and effective heat conductance values to the front, rear and ventilation shaft. From the measurements a clear correlation between the effective heat conductance and PV performance ratio was found. Moreover, we quantified the difference in ‘on-roof’ and ‘in-roof’-mounting: ‘in-roof’ mounting results in a 2% loss in performance ratio and a 2 W/m2K lower U-value. Finally, we identified key improvement factors to further improve the building integrated PV panel cooling.
TNO Identifier
872060
Source title
28th European Photovoltaic Solar Energy Conference and Exhibition
Collation
6 p.
Pages
4351-4356
Files
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