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Abstract:	Im Rahmen der Forschungsprojekte “LEXU” und “LEXU II” der IZES gGmbH wurde eine außenliegende Wandtemperierung (kurz “aWT”) entwickelt und erprobt. Bei der außenliegenden Wandtemperierung handelt es sich um ein niederexergetisches Temperierungssystem, das in Form von wasserführenden Rohren zwischen Bestandswand und neuem Wärmedämm-Verbundsystem (WDVS) aufgebracht wird. Erweitert man den Wandaufbau um einen Luftspalt zwischen dem Temperierungssystem und dem WDVS, so kann die außenliegende Wandtemperierung mit einer außenliegenden Lufttemperierung ergänzt werden. Beide Systeme werden aktuell anhand eines Demonstrationsobjektes umgesetzt. Auch die theoretischen Grundlagen und Simulationsmöglichkeiten wurden in den Forschungsprojekten erarbeitet. Der Fokus dieser Veröffentlichung liegt auf den theoretischen Grundlagen der aWT. Bei der aWT handelt es sich um einen Sonderfall eines thermoaktiven Bauteilsystems mit Fokus auf dem niederexergetischen Ansatz und mit der Möglichkeit einer minimalinvasiven Sanierung “von außen”. “Outlying wall tempering” - LowEx-Utlisation for building refurbishment and thermal activation of the existing wall: Theoretical principles and characteristic values. The main part of the research projects “LEXU” and “LEXU II” from the IZES gGmbH is the development and the in situ testing of an outlying wall tempering (aWT). The aWT is a panel heating that is fitted between the existing wall and a new thermal insulation. Depending on the position of the panel heating in the wall cross-section, very low supply temperatures (LowEx) can be used. Moreover, the existing wall can be thermally activated. The installation of the aWT is possible from the outside, without removal of the tenants/user (minimally invasive). Through the creation of an air duct between the thermally active layer and the insulation, the aWT can be expanded to an outlying air tempering (aLT). External air can be tempered and provided to the room as tempered fresh air. The aLT is a further low exergy extension of the aWT. Both components (aWT & aLT) have been implemented at a wall of an office building. Besides the learning effects of the attachment processes and the practical testingthe theoretical principles and the simulation possibilities of the aWT and the aLT were investigated in the project. The focus of this publication are the theoretical principles of the aWT in the context of TABS.
Source:	Bauphysik 39 (2017), No. 4
Page/s:	215-223
Language of Publication:	German

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