Auto-responsive technologies for thermal renovation of opaque facades

摘要

Auto-responsive technologies (ARTs) operate in an intrinsic mode undergoing reversible changes in one or more of their properties in direct response to external stimuli variations. The aim of this paper is to identify their potential use for the thermal renovation of opaque facades of buildings in order to reach climate adaptivity. Adaptive facade concept offers a huge potential for thermal renovation, by improving occupants' comfort, promoting sector decarbonization, and being an opportunity for adapting facades to climate change.A literature review permitted the systematization of thermal renovation adaptive strategies (TRAS) in which ARTs can be useful. The facade reversible changes (outputs) required for each strategy were identified, as well as the possible adaptation mechanisms to obtain them. The technologies responding within the recognized adaptation mechanisms were described and compared, their readiness level identified and their role within the TRAS was assigned.An approach to assess the suitability of each ART regarding TRAS for existing facades was conceived. It uses the criteria of aesthetic change, additional space and demolition needs, localization and area of intervention.The role of each ART within each TRAS, here systematized, will support the definition of the ART's operational range for each application and climate, and will promote the research and development of these technologies for thermal renovation of buildings' facades. (C) 2020 Elsevier B.V. All rights reserved.