jaue2021-070: Evaluation of Carbon Reduction Potential through Improvement of Heat Transmission Coefficient at University Buildings

Abstract

The warming caused by human activities is showing a trend of increasing the temperature by 0.2℃ per decade.
So, countries around the world have declared for ‘2050 carbon neutrality’ to control global temperature rise. The
greenhouse gas emissions of university campus buildings, the subject of this study, account for 12.6% of the
building's greenhouse gas emissions. If the exterior material of the university building is improved, the potential for
carbon emission reduction will be great. This study is aimed at the College of Engineering’s building of KUniversity
located in Daegu. The status of completion and remodeling was identified, and the heat transmittance
coefficient for the year was summarized. When heat transmission coefficient is applied, the energy demand, required
amount, and carbon emission were calculated. Through the improvement of the H.T.C., the demand for heating
energy decreased, but the demand for cooling energy increased. The annual CO2 reduction of building A is 1,010.62
tCO2eq, which is 1.21% of the existing amount. Building B can reduce 2.74% and 3,115.20 tCO2eq of the existing
amount. If the latest heat transmission coefficient standard is applied to the College of Engineering, it will be
possible to reduce 19,363.43 tCO2eq/year.