Calorimetric emissivities for solar-selective coatings on flat sheet
- 1 September 1979
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 12 (9) , 813-814
- https://doi.org/10.1088/0022-3735/12/9/005
Abstract
A calorimeter designed for measuring the hemispherical emissivity of flat sheet, coated on one side only, is described. Prime interest is in solar-selective coatings. A novel technique is used to ensure negligible heat losses from all but the coated surface. Results indicate that the selective coatings hemispherical emissivity is always significantly larger than normal emissivity, as found from spectral reflectance.Keywords
This publication has 3 references indexed in Scilit:
- The measurement of optical properties of selective surfaces using a solar calorimeterSolar Energy, 1978
- The unusual and useful optical properties of electrodeposited chrome-black filmsJournal of Physics D: Applied Physics, 1977
- High-temperature emissivities of copper, aluminum, and silverJournal of the Optical Society of America, 1977