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Abstract:	Moderne Heizsysteme können mit Vorlauftemperaturen im Bereich von 35 °C betrieben werden. Dieses Temperaturniveau bietet sich für den Einsatz von Niedertemperaturspeichern an, wodurch die Speicherverluste aufgrund einer reduzierten Temperaturdifferenz zur Umgebung verringert werden können. Um die bestehende Technik der Pufferspeichersysteme zu verbessern, wird in das Speichervolumen makroverkapseltes Latentwärmespeichermaterial eingesetzt. In einem Betriebstemperaturbereich von 30 bis 40 °C können als Phasenwechselmaterialien (PCM) Paraffine und Salzhydrate genutzt werden. Das niedrige Temperaturniveau ermöglicht den Einsatz der Solarthermie in den Übergangsmonaten (Herbst und Frühjahr), so dass ein höherer Beitrag zur Heizungsunterstützung geleistet werden kann. Die energetische Bewertung der Kombination aus PCM- Speicher und Solarthermie wird in Gesamtsystemanalysen untersucht. Application of latent heat storage devices and thermal solar collectors. Modern heating systems for buildings need a supply temperature of approximately 35 °C. In this temperature range it is possible to use low temperature storage systems. Therefore the heat losses over the envelope can be reduced because of the smaller temperature difference between the ambient air and the storage. In order to use the existing technique of the buffer storages more efficiently, latent heat storage devices are put into the storage volume. For the operating temperature range of 30 to 40 °C paraffins or salt hydrates can be used. Because of the low operating temperature it is possible to integrate solar thermal systems in the heating system (especially in spring and autumn). The overall system performance will be analysed.
Source:	Bauphysik 32 (2010), No. 6
Page/s:	386-390
Language of Publication:	German

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