서울시 햇빛지도 기반의 RPS제도를 고려한 옥상녹화 연계 태양광발전 시스템의 경제성 분석

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Economics Analysis of Photovoltaic Power Generation Linked with Green Roof in Consideration of Seoul Solar Map-based RPS

저자명 김태한, 이소담, 박정현

문서유형 학술논문

학술지 한국생태환경건축학회 논문집 17(1) 77-82 1598-3730 

발행정보 한국생태환경건축학회 |2017년 |한국어

주제분야 공학 > 건축공학 

서지링크 KISTI

<초록>
In power supply systems for urban areas, issues such as a progressive tax have escalated recently. In this regard, photovoltaic power generation, which is appraised as an alternative power generation system, is drawing attention increasingly for its high stability and applicability to existing infrastructure. This study assessed the realistic feasibility of photovoltaic power generation and also analyzed the economic benefits expected when it is linked with green roof, which is likely to promote ecological functions in urban areas, based on the Seoul solar map, RPS, and actual monitoring data. The economics analysis of 30kW photovoltaic power generation applied with the monthly average horizontal solar radiation of six grades in the Seoul solar map showed that positive NPV was up to grade 4, while grade 5 or poorer showed negative NPV and indicated that it is difficult to assure appropriate feasibility. Compared with non-afforestation, when green roof was applied, monthly average power improvement efficiency was 7.2% at highest and 3.7% at lowest based on yearly actual monitoring data. The annual average was 5.3%, and the efficiency was high relatively in summer, including September and November. As for the economic benefits expected when 30kw photovoltaic power generation is combined with green roof based on the average horizontal solar radiation of grade 1 in the Seoul solar map, SP has improved 0.2 years to 7.4 years, and EP has improved 0.5 years to 8.3 years.

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