건축설비 갱신사례를 통한 화석연료와 지열원의 LCC 비교 = LCC Comparison of Ground Source Energy with Fossil Fuel Energy through Renewal Case of Building Mechanic Equipment

다국어 초록 (Multilingual Abstract)

As known as, the GSHP(Ground Source Heat Pump) system is a kind of the renewable energy system that use the geothermal energies for heating and cooling in the building. In recently, many GSHP systems was installed in the building for reducing the Green House Gases and the energy cost. However, published studies of Life Cycle Costing on GSHP system were rare case. Therefore, this study aim is Life Cycle Cost comparison of the GSHP system with the conventional diesel boiler system and city gas boiler system through the renewal case of building mechanic equipment in the temperate region.(Case Building; Childcare Center, 2,199.20m2, 105RT GSHP, Seoul Korea) In this study, the initial cost of GSHP system is 2.4 times to the diesel boiler system, 2.1 times to the city gas boiler system. And the running cost of GSHP system is 84.1% lower than the diesel boiler system, 59.5% lower than the city gas boiler system. In conclusion, the LCC16 of the GSHP system is 63.0% lower than the diesel boiler system, 19.9% lower than the city gas boiler system.(This study used the Present Value Method. This study used the data which are the interest; 6.5%, the oil price escalation index; 15.13%, the city gas price escalation index; 10.56%, the electric price escalation index; 6.43%, the system's Life Cycle; 16years.)

목차 (Table of Contents)

• 1. 서론 = 1
• 1.1 연구의 배경 및 목적 = 1
• 1.2 연구의 방법 및 범위 = 3
• 2. 지열히트펌프 기술 = 6
• 2.1 지열히트펌프시스템 작동 원리 = 6
• 2.2 지중열교환기 = 9
• 2.3 지중온도(地中溫度, soil temperature) = 12
• 2.4 지열히트펌프 성능 = 16
• 2.5 지열히트펌프 보급현황 = 17
• 2.6 지열히트펌프기술 연구동향 = 20
• 3. 사례건물 선정 및 자료조사 = 22
• 3.1 사례건물 건축개요 = 22
• 3.2 지열히트펌프시스템 개요 = 24
• 3.3 연간에너지 사용량 = 28
• 3.4 초기투자비 산정자료 = 30
• 4. 생애주기비용(LCC) 분석 = 31
• 4.1 생애주기비용 분석 범위설정 = 31
• 4.2 연간에너지 사용량 변환 = 33
• 4.3 에너지가격상승률 및 단가조사 = 37
• 4.4 운영에너지비용 현가 산정 = 41
• 4.5 시스템별 운영에너지 현가 분석 = 44
• 4.6 시스템별 초기투자비 산정 = 46
• 4.7 생애주기비용 산정 및 분석 = 48
• 5. 결론 = 51
• 참고문헌 = 53
• Abstract = 55
• 감사의 글 = 57