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공공업무시설에 연료전지를 복합 적용한 신재생에너지 시스템의 투자회수기간 분석
장혜민(Jang),원안나(Hye-Min Won),조영흠(Cho, Young-Hum),황정하(Hwang, Jung-Ha) 한국건축친환경설비학회 2016 한국건축친환경설비학회 논문집 Vol.10 No.2
This study applied fuel cells, photovoltaic heat, and geothermal heat, some of new and renewable energy sources, to public office facilities in a complex way, evaluated their economy, environmental effect, technology, and complexity, and calculated a payback period by reflecting changing nominal discount rates to the optimal ratio based on complexity. The research content was summarized as follows: 1) The study tested the reliability of annual energy consumptions of the subject building by the load based on EnergyPlus and the calculations based on the KRESS program with MBE and Cv(RMSE). 2) The optimal ratio of top 5% was obtained with KRESS based on the economy, technology, environmental effect, and complexity of photovoltaic, geothermal, and fuel cell systems. 3) The percentage of fuel cells had big impacts on economy and complexity; that of geothermal heat did on technology; and that of photovoltaic heat did on environmental effect. 4) Every 2% increase of nominal discount rate(NDR) led to an increase of payback period by 3 to 7 years for each alternative. The study also presented a relational expression between NDR and payback period.