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윤수인,노동택,노지현,김정남 부산대학교 물성연구소 1982 물성연구소연구논문집 Vol.1 No.-
The measured solar absorptance and spectral emittance of the nickel black and chrome black coatings prepared by lectroplating at various plating current densities were reported. The cyclic heating and cooling technique was mployed for the absorptance measurement of these coatings. The nickel black coating with α=0.87 and ε(100℃)=0.25 was obtained by plating at 30℃ for 5minutes with the current density of 0.1A/dm². Where as the best chrome black coating with α=0.89 and ε(100℃)=0.21 was achieved by plating at 20℃ for one minute with the current density of 100A/dm². Accelerated humidiry and themal durabilitys test result on these coatings was also reported.
Hohlraum로를 이용한 불투명체의 Hemispherical Angular Monochromatic 반사율 측정
윤수인,노동택,노지현 부산대학교 1978 論文集 Vol.26 No.2
An instrument and method of measuring monochromatic hemispherical reflectances of opaque materials are described. In this method a cool sample is exposed is exposed to blackbody radiation from a high temperature source and the monochromatic radiation reflected from the surface is compared to the blackbody radiation from the cavity at that wavelength. The data are thus hemispherical angular monochromatic reflectances. The reflectances of copper black, nickel black and several other black paints are measured by this method.
윤수인,노동택,노지현 부산대학교 물성연구소 1982 물성연구소연구논문집 Vol.1 No.-
The nickel-zinc-sulfide complex known as nickel black is produced on nickel and galvanized iron bases by the electro-deposition method. The nickel-black-on-nickel selective surfaces give an absorptance of 0.91 and emittance of 0.40. Whereas the nickel-black-on-galvanized-iron selective surfaces give an absorptance of 0.95 and emittance of 0.30. The copper black coatings produced on an aluminum base by using dipping and baking techniques give an absorptance of 0.94 and emittance of 0.42 An absorptance of 0.3 can often be obtained with almost no effect on the emittance of the base; however, by the time absorptance has been raised to 0.9, by using thicker lauyers or other changes in the recipe, the emittance has risen considerably. According to the detailed analysis of the efficiency of the flat-plate solar heat the collector, selective surfaces show better efficiency than the nonselective surfaces.