논문 국내 국내전문학술지(KCI급) 흑색 황산3가크롬을 이용한 태양열 흡열판 선택흡수막 도금기술
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2013-07
- 저자명 djaxodls
- 학술지명 한국태양에너지학회 논문집
- 발행처명 한국태양에너지학회
- 발행국가 국내
- 논문언어 외국어
- 전체저자수 3
홈페이지논문 초록 (Abstract)
Abstract : One of the most important factors that have a large influence on performance of the solar water heater systemis performance of the solar collector, more detailedly, coating technology on the surface of the solar collector, which can provide hig h solar absorptance and low emittance. The core of the coating techn ology is to coat solar selective surfaces. In this study, various perfor mance experiments are carried out using Cr2(SO4)3・15H 2O coating technology. Here, IGBT(Insulated Gate Bipolar Transistor) of 5000A-15V was used as t he surface processing rectifier which can stably output power and als o can control voltage and current. The plating solution mainly contai ns black chrome+3 concentration, H-y Conductivity, N-u Complex, NF A dditive and NC-2 Wetter. Before applying the black chrome coating on th e copper plate, optimal conditions are provided by using various prepr ocessing methods such as removal of fat, activation, electrolytic polishing, nickel strike, copper sulfate plating and bright necke l plating, and then the automatic continuous coating experiment a re performed according to plating time and cathode current density. In the experiment, after the removal of fat, chemical polishing, nickel strike and activation processes as the preprocessing methods, t he black chrome coating was performedin a plate solution temperatur e of 28℃ and a cathode current density of 18A/㎠ for 90 seconds. T he thickness of chrome and nickel on the coated plate is 0.389㎛, 1 59㎛ respectively. As a result of the coating experiment, it showed the mostexcellent performance having a high solar absorptance of 98% and a low emittance of 5±1% when the black chrome surface had a thickness of 0.398㎛.