Abstract
To achieve the national carbon-neutral target, carbon reduction in the building sector is essential, and environmental impact assessments of hybrid systems such as photovoltaic and geothermal systems are required. Therefore, in this study, carbon emissions were calculated based on the life cycle evaluation method to understand the environmental load during the entire life cycle of the photovoltaic-geothermal hybrid system. The carbon emissions of the major equipment used in the target system were evaluated by dividing them into four stages: production, construction, operation, and disposal. In the single system (geothermal) and the hybrid system (photovoltaic-geothermal), carbon dioxide emissions increased during the production and construction stages, but due to the power generated from the PVT, an energy-saving effect of about 10% was observed in the operation stage.
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