Abstract

Energy plans are at the center of countries' development plans. The share of buildings in energy consumption is about 40%. Energy consumption in buildings can be reduced by 25-45% with the measures taken. The European Union has published the Energy Performance Directive on Buildings (EPBD) to reduce the energy consumption of buildings. European Union member and candidate countries are obliged to fulfill the provisions of the regulation. Turkey is among the candidate countries for accession to the European Union (EU). Therefore, the energy consumption of the existing buildings and the reduction of CO2 emissions were examined in this study. Since The Intergovernmental Panel on Climate Change (IPCC) predicts that global temperatures will increase by a range of 1.1°C to 6.4°C by the end of the twenty-first century, future climate data were also taken into consideration in this study. For the study, measures were determined to achieve the EU's total CO2 emission reduction targets. A mass housing settlement built by the Housing Development Administration (TOKİ) in Isparta has been identified as the study area. Improving the heating systems of these buildings, increasing the energy performance of the building envelope and the production of electricity with photovoltaic (PV) panels were studied in this study. As a result of the study, it was determined that it has 66% CO2 emissions in 2020, 79% in 2030, and 84% less in 2050 compared to 1990.

Highlights

  • Countries take measures on energy efficiency due to the increase in energy consumption (Sümer Haydaraslan and Yaşar, 2019)

  • According to climate change reports published by the Intergovernmental Panel on Climate Change (IPCC), temperatures are expected to increase in the range of 1.1oC to 6.4oC by the end of the 21st century (IPCC, 2013)

  • The effects of the measures in this scenario on primary energy consumption and CO2 emissions were examined on the existing buildings in Isparta

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Summary

Introduction

Countries take measures on energy efficiency due to the increase in energy consumption (Sümer Haydaraslan and Yaşar, 2019). Buildings have an essential share in energy consumption. It is easier for companies to build new buildings energy-efficient. The EU states that existing buildings should be renewed within the scope of energy efficiency (EED, 2012). It is aimed to reduce primary energy consumption by 14% in the National Energy Efficiency Action Plan of Turkey. Because of the use of fossil fuels as an energy source, the release of greenhouse gases that cause climate change is increasing. While CO2 emissions from all fossil fuels increased, CO2 emissions from buildings reached the highest level in 2018 (TCEP, 2017). Rising temperatures due to climate change increase the need for cooling in buildings. The one-fifth increase in energy consumption in 2018 is due to the increase in cooling demand (TCEP, 2017; WEO, 2018)

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