계절별 PV 및 PVT의 효율 비교를 통한 공기식 PVT 시스템의 태양에너지 활용 효과 분석

• Published in: 한국태양에너지학회 논문집 Vol. 42; no. 4; pp. 69 - 78
• Main Authors: 김강현(Kim KangHyun), 최영진(Choi YoungJin)
• Format: Journal Article
• Language: Korean
• Published: 한국태양에너지학회 01.08.2022
• Subjects: 기타공학; PVT 시스템(Photovoltaic thermal system); 태양에너지(Solar energy); 에너지 활용 효과(Energy utilization efficiency)
• ISSN: 1598-6411; 2508-3562
• DOI: 10.7836/kses.2022.42.4.069

Recently, the use of new and renewable energy for suppressing the generation of carbon dioxide to prevent global warming has attracted considerable attention. Among the various new and renewable energy sources, solar energy has been attracting increasing interest for the reduction of building energy, as it is easy to implement in buildings and excellent for maintenance and repair. Therefore, in this study, an air-based photovoltaic thermal (PVT) system, which can increase the utilization of solar energy, was compared with the existing PV system through measurements. The PVT system can increases the amount of power generated by reducing the temperature of the panel via the air passing through the lower part of the panel. Furthermore, useing the air whose temperature has been increased by the heat obtained from the panel for indoor heating or hot water supply in the building is possible. The performance of existing PV and PVT panels was measured under the same weather conditions, and result indicated that the power generation efficiency of PVT panels, through which the air passes was higher than that of PV panels. Furthermore, the air whose temperature was increased to ≥40°C by the PVT system may be utilized for heating and hot water supply. Overall, by utilizing solar power, air-based PVT systems can utilize 3.4 ~ 3.9 times more solar power than can conventional PVs. KCI Citation Count: 1