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A Study on the Comparison for Energy Consumption Characteristics between G-SEED certified and non-certified Office Buildings in Korea

G-SEED 인증 건축물과 비인증 건축물의 에너지 소비량 특성에 관한 연구 : 업무시설을 대상으로

  • Kim, Jong-Hyun (Division of Architecture and Urban Design, Incheon National University) ;
  • Kim, Jin-Ho (Division of Architecture and Urban Design, Incheon National University)
  • 김종현 (인천대학교 도시건축학부) ;
  • 김진호 (인천대학교 도시건축학부)
  • Received : 2019.09.10
  • Accepted : 2019.11.01
  • Published : 2019.11.30

Abstract

Considerable efforts have been made to reduce greenhouse gas emission around the world to cope with climate change. The government is implementing G-SEED certification to promote energy efficient building design. This study aims to verify the effectiveness of the G-SEED certification system by analyzing the actual energy use of certified and non-certified office buildings. For this purpose, the energy consumption of 135 certified and 142 non-certified office buildings was analyzed according to the seasonal characteristics, building size and number of floors, approval year, and certification grade. The energy saving effects of certified buildings was about 50% higher than that of non-certified buildings. The seasonal energy consumption of buildings is closely related to the heating degree-days. The energy consumption of certified and non-certified buildings decreases with increasing approval year. On the other hand, the energy consumption according to building size and certification grade is not related. This study provides meaningful basic data of G-SEED certification system for future improvement. As the building energy performance standards are strengthened over the years, it is necessary to make the individual score of G-SEED certified projects open to the public to configure the factors of energy efficiency.

기후변화 문제를 해결하기 위해 세계 각국은 온실가스 감축 의무를 이행하기 위해 노력하고 있다. 건물부문은 국가 온실가스 배출량의 약 25%를 차지하며, 향후 40%까지 증가할 것으로 전망하는 만큼 정부는 에너지 절감 계획에 대한 정책을 수립하여 추진 중이다. 건물부문의 에너지 절감을 위한 정책의 일환으로 녹색건축인증제도 시행을 통해 보다 에너지 절감형 건축물 설계와 시공을 유도하고 있다. 본 연구는 G-SEED 인증 건축물과 비인증 건축물의 에너지 소비량에 영향을 미치는 원인에 대한 분석과 결과를 바탕으로 현행 제도의 실효성과 문제점을 파악하고 향후 G-SEED 제도의 개선 방향에 대해 논의하고자 한다. 이를 위해 서울시에 소재하고 있는 인증 업무시설 135동과 비인증 업무시설 142동을 대상으로 건축물 정보와 에너지 소비량 데이터를 수집하였으며, 분석결과 다음과 같은 결론을 도출하였다. 인증 업무시설은 비인증 업무시설에 비해 연간 50% 이상의 에너지 절감효과가 있는 것으로 나타났다. 계절에 따른 에너지 소비량은 난방 도일과 높은 상관관계가 있는 것으로 나타났다. 사용승인연도가 높을수록 인증 업무시설의 에너지 소비량은 감소하며, 비인증 업무시설은 오히려 증가하는 경향을 보였다. 규모와 인증등급에 따른 에너지 소비량은 상관관계가 미미한 것으로 드러났다. 본 연구는 이상의 분석을 통하여 G-SEED 인증제도 개선을 위한 기초자료로서 의의가 있다. 또한 건축물의 에너지성능 기준이 강화되는 추세를 감안하여, 분야별 점수를 공개적인 자료로 전환하는 것을 제시한다.

Keywords

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