Özet:

Today, with the rapid consumption of natural resources and increasing greenhouse gas emissions, the effects of global warming are becoming increasingly visible every day, sustainability efforts aim to reduce environmental damage. Due to the use of natural resources and high emission values, the construction sector is one of the sectors that need to take urgent measures in this sense. In this context, green building certifications guide sustainability practices in the construction sector. These certifications are renewed where necessary in order to have a positive impact on the resolution of current environmental problems. This study analyzes how updates made in the undertitles of Energy and Energy Efficiency in the Interior of the Energy and Environmental Design Leadership (LEED), the world’s most popular green building certificate, impact the CO2 emissions resulting from water and energy consumption. In this context, the differences between the 2009 LEED version 3 and the up-to-date version 4.1 released in 2019 have been revealed by the water and energy efficiency analysis of a building, certified under version 3. When these two versions are thoroughly examined, it has been found that although there are no major updates on the water efficiency requirements in the interior, the changes made have encouraged projects to reduce water consumption, or to use alternative water sources. Thus, it was found that both water resources could be preserved and the reduction of water consumption could reduce the CO2 emissions resulting from water treatment, distribution and wastewater discharge by 10.5%. In terms of energy efficiency, the differences between ASHRAE 90.1-2007 followed in version 3 and ASHRAE 90.1-2016 followed in the current version showed that the CO2 emissions could be reduced by 16.6 percent by the applications to ensure the same efficiency rate.

Anahtar Kelimeler:

Özet:

Nowadays, while natural resources are being depleted rapidly and the effects of global warming has become more distinct with the increasing greenhouse gas (GHG) emissions, it is aimed to prevent environmental degradation through sustainability studies. Due to the high consumption of natural sources and GHG emissions, construction sector is one those that should act immediately. In this context, green building certifications lead sustainability practices in the construction industry. These certifications are updated as necessary in order to provide solution for current environmental problems. In this study, how CO2 emissions caused by water and energy consumption are affected by the updates in indoor water and energy efficiency subtitles of Leadership in Energy and Environmental Design (LEED), which is the most preferred green building certification in the world, was analyzed. In this context, the differences between LEED v3 (published in 2009) and v4.1 (published in 2019) were revealed by conducting the water and energy efficiency analyzes on a sample building certified under version 3. When these two versions are examined side by side, although there are no major updates on indoor water efficiency requirements, it has been shown that, the changes lead projects to either decrease the water use or use alternative water resources. In this way, it has been determined that, both water resources can be protected and as a result of reducing water consumption, CO2 emissions caused by water treatment, distribution and disposal of wastewater can be reduced by 10.5%. It was found that, thanks to the differences between ASHRAE 90.1-2007 (v3) and ASHRAE 90.1-2016 (v4.1), applications to be carried out to provide the same efficiency may reduce CO2 emissions by 16.6%.