Study on Energy Saving Effects of ZEB Retrofit in University Facilities - Based on the Impact of the Pandemic -

¹ Stu. , Graduate School of Science and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
² Associate Prof. , Graduate School of Science and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan

^* Corresponding author: d055veu@yamaguchi-u.ac.jp

Abstract

In this study, the simulation reflects the changes in the use of university facilities by COVID-19 and shows the changes in primary energy consumption. The actual value, which was 1304MJ/(m²/year) before the pandemic, changed to 1399MJ/(m²/year) after the pandemic. Therefore, we will clarify the factors behind the change in actual values. Furthermore, we will quantitatively evaluate the energy reduction effect when practical energy-saving technologies are introduced to university facilities. The simulation results show that primary energy consumption can be reduced by 8.5% by reviewing the lighting equipment and outer skin performance. It was also found that primary energy consumption could be reduced by 43.3% by reviewing the air conditioning equipment and operation. Furthermore, the addition of solar panels increased the amount of energy created by 45.6MJ/(m²/year). As a result, primary energy consumption could be reduced by up to 751.3MJ/(m²/year), or 56.8% compared to the actual value. In addition, primary energy consumption could be reduced by up to 619.3MJ/(m²/year), or 52.8% compared to the BEST Standard. Based on the above results, the subject building is expected to be ZEB Ready.