Browsing by Keyword "Solar thermal systems"
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Item Performance assessment of an unglazed solar thermal collector for envelope retrofitting(2017-06) Martinez, Roberto Garay; Goikolea, Beñat Arregi; Paya, Ignacio Gomis; Bonnamy, Paul; Raji, Saed; Lopez, Jerôme; Tecnalia Research & Innovation; EDIFICACIÓN DE ENERGÍA POSITIVAPresent trends on solar thermal systems for building integration define the need of integrated solar technologies for façades. Although other possibilities exist for solar thermal systems in new buildings, solutions for a suitable integration of solar thermal systems into building retrofitting actuations are needed. This paper presents a solar thermal collector system which hybridizes already existing ventilated façade cladding systems into a low temperature solar thermal collector. Numerical and experimental data is presented.Item Performance assessment of façade integrated glazed air solar thermal collectors(2017) Martinez, Roberto Garay; Larraz, Julen Astudillo; Tecnalia Research & Innovation; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓNPresent trends on solar thermal systems for building integration define the need of integrated solar technologies for façades. The integration of solar systems in façades allows for the direct connection of solar systems to heated spaces, and automated air solar collectors based on the trombe-mitchell provide a suitable technology for its adoption in multi-rise buildings with decentralized-individual HVAC systems in Central-European and Mediterranean heating dominated climates. This paper reviews the main principles of such building envelope components, and the construction and design considerations of two air-based solar thermal collectors. Full scale preliminary prototypes of these systems were tested at the KUBIK by Tecnalia test facility in an Oceanic Climate (Koppen Geiger Cfb zone). The observed thermal performance is analyzed, and the process of a full scale installation in a real building envelope retrofitting process of a building in Spain is reviewed.