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Abstract:	Der Gesamtenergiedurchlassgrad (g-Wert) verschiedener teiltransparenter, gebäudeintegrierbarer Photovoltaik-Module wurde mit und ohne Entnahme elektrischer Leistung kalorimetrisch gemessen. Durch die Leistungsentnahme sinkt die Oberflächentemperatur des Moduls um bis zu 4 K. Gleichzeitig reduziert sich der g-Wert aufgrund der geringeren sekundären Wärmeabgabe. Die Größe der Abnahme hängt von der entnommenen Leistung ab und stimmt sehr gut mit einem einfachen, auf dem Energiesatz basierenden Rechenmodell überein. Investigation of the total solar energy transmittance on building-integrated, semitransparent photovoltaic modules with and without extraction of electrical power. The total solar energy transmittance (g-value) of different building-integrated PV-elements has been measured with and without extracting electrical power from the module. When extracting energy, a reduction in the g-value has been measured. Moreover, a reduction in temperature up to 4 K on the inner surface is observed. The experimental results are in very good agreement with a physical model based on energy conservation.
Source:	Bauphysik 34 (2012), No. 4
Page/s:	153-156
Language of Publication:	German

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