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태양열 흡수체용 구리산화막의 표면특성 및 저방사코팅 연구
강동필(Kang Dong-Pil),박효열(Park Hoy-Yul),나문경(Na Moon-Kyong),안명상(Ahn Myeong-Sang),이태주(Lee Tae-Joo),장태순(Jang Tae-Soon),이종엽(Lee Jong-Yup),김춘열(Kim Chun-Yeol) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-
This study was done on surface property of surface-oxidized copper for solar absorber and low emissivity coated on solar absorber. As surface temperature of solar energy absorber increases, most solar energy absorbers emit the energy into infrared rays. For increasing the efficiency of collecting sun energy, low emissivity coating on solar energy absorber is needed. Temperature elevation characteristics of solar energy absorber was influenced by surface condition of solar energy absorber and low emissivity coating material.<br/> Surface-oxidized coppers were prepared for solar energy absorber. The temperature elevation property of surface-oxidized copper absorber was examined with several insulation conditions to minimize the heat loss through conduction and convection. Two kinds of low emissivity materials and silica sol were coated on the surface-oxidized copper absorber. And then the surface properties, surface condition and roughness, were observed. Temperature elevation characteristics of solar energy absorber was influenced by surface condition of solar energy absorber and low emissivity coating material. Thin and uniform surface of low emissivity coating can reduce the emission of thermal energy.