건축설비 갱신사례를 통한 화석연료와 지열원의 LCC 비교

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.)