Print Email Facebook Twitter The impact of using Closed Cavity Façades (CCF) on buildings' thermal and visual performance Title The impact of using Closed Cavity Façades (CCF) on buildings' thermal and visual performance Author Michael, M. (University of Cambridge) Overend, M. (TU Delft Structural Design & Mechanics) Date 2021 Abstract Glazing is a critical buildings element as it is the most vulnerable envelope part to heat gain and heat loss accounting for around 50% of a building's energy consumption. However, conventional glazing technologies have relatively low-performance characteristics which cause significant heat losses during winter and undesired heat gain in summer. In this regard, this study investigates the thermal and visual performance of various design configurations of a novel glazing technology, named Closed Cavity Façade (CCF), in comparison with traditional glazing technologies. Several CCF configurations were examined using Energy Plus and IDA ICE and compared to the baseline Double Glazing Unit (DGU) (traditional or thermochromic). MATELab, an office-like test facility at the University of Cambridge was used as the model for the simulations, which was beforehand experimentally validated. The results showed extensive benefits of CCFs compared to DGU systems, in terms of thermal performance and comfort. A 22-41% or 21-37% decrease in annual total energy consumption, compared to traditional DGU or thermochromic respectively, are identified along with a positive effect on thermal comfort with a significant reduction in radiant discomfort. Further investigation showed that glass coatings and solar shading device's characteristics play an important role in achieving further performance improvements. Subject AdaptiveClosed cavityDouble-skinDynamicEnergy efficiencyFaçadeThermal comfortVisual comfort To reference this document use: http://resolver.tudelft.nl/uuid:73418ee4-6d1e-410a-9218-d1f0b8c1896a DOI https://doi.org/10.1088/1742-6596/2069/1/012021 ISSN 1742-6588 Source Journal of Physics: Conference Series, 2069 (1) Event 8th International Building Physics Conference, IBPC 2021, 2021-08-25 → 2021-08-27, Copenhagen, Virtual, Denmark Part of collection Institutional Repository Document type journal article Rights © 2021 M. Michael, M. Overend Files PDF Michael_2021_J._Phys._Con ... 2021_1.pdf 1.01 MB Close viewer /islandora/object/uuid:73418ee4-6d1e-410a-9218-d1f0b8c1896a/datastream/OBJ/view