International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 05 | May 2023
p-ISSN: 2395-0072
www.irjet.net
Energy-Efficient Retrofitting with Kinetic Shading Device in Tropical Climate Ar. A. Mohamed Abu Bakker 1, Ar. Z. Fathima Taskeen2, Ar. K. Indra Priya3 1 Post Graduate Student, M. Arch - Construction Project Management, Faculty of Architecture, Dr MGR Educational
and Research Institute, Maduravoyal, Chennai
2 Additional HOD, Faculty of Architecture, Dr MGR Educational and Research Institute, Maduravoyal, Chennai 3Deputy HOD, Faculty of Architecture, Dr MGR Educational and Research Institute, Maduravoyal, Chennai
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Abstract - The purpose of this study is to examine the
Nature manifests through climate changes are inevitable. Adaptation to such manifests is the best solution. The building sector accounts for a significant portion of global energy consumption, underscoring the importance of raising awareness about the energy efficiency of existing structures. Commercial buildings are a major contributor to this energy consumption, with office buildings standing out as having the highest energy usage rates within the commercial sector.
potential of kinetic envelopes for the development of optimal, daylight-efficient facades. The research covers an extensive study on building façade journals and case studies. The retrofitting study involves the identification of commercial buildings in a hot and humid climatic region and perform daylight analysis on the building models. A commercial building was selected in Chennai and modelled through Rhino and daylight analysis was simulated in Climate Studio. The simulation was done with 3 cases: Varying Glazing Type & WWR (40% & 60%), Adding Kinetic Louvers & Adding Kinetic Louvers on WWR 40%. Base case was an envelope with Single Glazed Blue Tinted Glass. The results were analyzed based on LEED rating system with ASE and SDA values. Results showed that Kinetic louvers with Single Glazed Blue Tinted glass outperformed all the other cases. The best case decreased ASE by 65% and SDA by 30% from the base case. With increasing necessity for sustainable buildings and uncertainty of nature manifests, dynamic envelope retrofits for existing buildings like the best case discussed here can be seen as better options than relying on demolishing and re-constructing.
1.1 BACKGROUND OF THE STUDY The energy performance of a building is influenced by several factors, such as the design of the building envelope, the behaviour of occupants, and the heating, ventilation, and air-conditioning (HVAC) system. Building facades are responsible for almost half of the energy consumption in buildings, either directly or indirectly. The building facade is a critical element in regulating the microclimate around a building, and can play a significant role in reducing energy consumption and mitigating negative environmental impacts.
Key Words: Kinetic louvers, retrofitting, daylight-efficient,
Due to the longer operating hours and the substantial energy demands for lighting and temperature regulation, there is great potential for reducing energy consumption in office buildings by improving the daylight performance of their building envelopes. Retrofitting existing buildings can be an effective way to achieve this goal. The practice of retrofitting buildings for improved energy efficiency is still relatively new, and there has been limited focus on retrofitting building facades specifically. In fact, only 17% of retrofit projects conducted by Energy Savings Companies (ESCOs) involve upgrades to the building envelope. This research involves venturing into this new retrofit domain with kinetic facades.
SDA - Spatial Daylight Autonomy ASE – Annual Sunlight Exposure LEED - Leadership in Energy and Environmental Design WWR – Window Wall Ratio ECBC – Energy Conservation Building Code
1.INTRODUCTION A kinetic facade is a building facade that has the ability to move or change shape. These facades are designed to respond to environmental conditions such as temperature, humidity, wind, and light. The movement can be triggered automatically through sensors or manually through user input. Benefits of façade include temperature regulation & natural ventilation by opening and closing, reduce need for artificial lighting, visual dynamic appearance, aesthetic appeal, etc. They are made up of shape-memory alloys, hydraulic systems, flexible membranes, etc.
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1.2 AIM, OBJECTIVE AND SCOPE OF THE STUDY The aim of this research is to analyse how kinetic shading system reduces energy consumption, identify low performance commercial buildings in Chennai city and improve its daylight performance using kinetic façade.
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