Yapılarda Gömülü ve Kullanım Enerjisi Kavramlarının Yaşam Döngüsü Değerlendirmesi (YDD) Metodolojisiyle İrdelenmesi

Abstract

According to many scientific investigations, approximately half of the annual energy consumption realized globally is used for the activities carried out for the production, operation, and maintenance of buildings. This energy, most of which is obtained from fossil fuels, is one of the leading factors that constitute climate change caused by carbon emissions. Embodied energy: it covers all of the activities carried out before the commissioning process, such as the extraction of raw material, its processing and obtaining it as a building material, the transportation of the building material to the construction site and the construction of the building. The operational energy is defined as the energy consumed in order to create the comfort conditions of the end user, such as in the air conditioning and lighting of the buildings, especially in heating and cooling, and in the operation of energy-requiring appliances. Effectively reducing the carbon footprint of buildings is possible with designs that take into account both embodied and operational energy. However, researches have focused more on operational energy, ignoring embodied energy, which is a relatively complex and tedious process to calculate. In this study, the relationship between embodied and operational energies and carbon emissions with each other, especially considering existing buildings, through the concept of life cycle assessment. In the study, a method in which the findings obtained by conducting extensive literature analysis on internationally accepted scientific publications are compared and synthesized in order to create a conceptual framework has been preferred. As a result of the study, it has been determined that in order to ensure ecological sustainability, it will not be sufficient to reduce the operational energy only, and it is necessary to determine policies together with embodied energy.