The Role of Green Maintenance and Building Retrofitting Methods in Improving Energy Performance and Reducing CO2 Emissions for Heritage Buildings

Sustainability generally refers to the integration of the economic, environmental and societal domains. Environmental considerations for the sustainable restoration of heritage buildings are becoming increasingly important; Heritage buildings are important for the history of past, current and future generations and must be preserved by all generations. Therefore, preserving heritage buildings is important to preserve their historical and architectural value and to ensure the preservation of their economic and societal capital invested in the urban fabric. The term “rehabilitation” is used as a measure taken to treat the inability to perform the expected activities of the building , and it generally means that there is a good previous condition in which the building was, then its condition deteriorated for certain reasons, or over time it became unsuitable for the function for which it was built It was necessary to make some modifications to it to give it the ability to give again, without compromising its original values. And architectural rehabilitation, more precisely, means setting a set of determinants to restore the building in its current form to perform its old functions or any suitable new function, through repair or development, while preserving the parts and elements of the building that carry distinctive historical, architectural or cultural values ​​through the ages that have passed. on the building since its inception. This means finding a new function for the building so that it can be benefited from and exploited economically , and at the same time we guarantee its continuity and maintain it through the presence of users who carry out maintenance work continuously . . The tendency to rehabilitate heritage buildings is currently increasing, with the rapid development and the urgent need to use these buildings more efficiently than they were before, the main objective was to identify the extent to which green maintenance and energy Retrofitting methods for heritage buildings contribute to improving energy efficiency and reducing the rate of CO2 emissions for heritage buildings, , through an analytical approach and an applied approach using the simulation program designbuilder v 7.0 for a heritage model built La Viennoise, which was re-released. Energy renewal and Retrofitting, and the results indicate that green maintenance of heritage buildings and working to implement it improves energy performance by more than 41% and reduces the rate of CO2 emissions by 17% from the base case in heritage buildings.