Energy-efficient retrofitting with exterior shading device in hot and humid climate – case studies from fully glazed multi-storied office buildings in Chennai, India
| Autor: | Chandrasekaran C, Kumudhavalli Sasidhar, A. Madhumathi |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Asian Architecture and Building Engineering, Vol 22, Iss 4, Pp 2209-2223 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1347-2852 13467581 |
| DOI: | 10.1080/13467581.2022.2145208 |
| Popis: | Many existing buildings are not sustainable, such as poorly insulated office buildings with large glass window panels that significantly increase the cooling energy use in a hot and humid climate. Energy-efficient retrofitting can substantially reduce energy use through a passive façade design. This paper suggests simulation as a method for selecting a façade retrofit solution at the early design stage. A façade retrofit solution that requires the integration of all three sustainability dimensions: energy efficiency, visual comfort, and economics. Two case studies of fully glazed multi-storied office buildings of different sizes demonstrate the methodology. This research adopted two simulation methods: one for façade retrofit solutions with fixed exterior shading device (ESD) types and the other for a dynamic ESD. The results show that fixed ESD with perforated fabric for 100% of the glazing area was 22.7% energy-saving retrofitting solution than the base case for the small sample and 17% energy-saving for the large sample with a low payback period of 7 years for both the case sample. Building practitioners, stakeholders, and end-users can use this simulation methodology for a successful façade retrofit decision-making at the early design stage. |
| Databáze: | Directory of Open Access Journals |
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