Sustainable Renovation on Aosta Residential Building for Carbon Neutrality

Under the effects of global warming and further environmental issues, sustainable development has gained worldwide relevance. The United Nations (UN) proposed Sustainable Development Goals (SDGs) for sustainable development, including carbon neutrality. This research focused on decreasing the building energy use and carbon emissions for carbon neutrality, especially in the building operation phase. Based on the current status of building stock retrofit in Aosta, Italy. Aosta social housing is used as an example of sustainable renovation research. The research methods include onsite investigation and energy simulation. The onsite investigation was made from May 30 2022, by interviewing the users and onsite measurement to analyze the building status quo in subjective and objective aspects. The software used are Revit, Ecotect, and Phoenics, to simulate the outdoor and indoor environments, and to analyze the building's behavior under a range of conditions. Glare and overheating during the afternoon are considered. The design deploys outdoor shading, according to the traditional local Walser haylofts wisdom. And modern technologies such as high-quality profiles and triple glazing windows are considered. Through sustainable renovation, indoor problems are addressed. Therefore, the sustainable retrofit improves the living environment and positively reduces energy consumption. To a certain extent, this research contributes to carbon neutrality through sustainable renovation.