TY - JOUR
T1 - First spectral emissivity study of a solar selective coating in the 150-600°C temperature range
AU - Setién-Fernández, I.
AU - Echániz, T.
AU - González-Fernández, L.
AU - Pérez-Sáez, R. B.
AU - Céspedes, E.
AU - Sánchez-García, J. A.
AU - Álvarez-Fraga, L.
AU - Escobar Galindo, R.
AU - Albella, J. M.
AU - Prieto, C.
AU - Tello, M. J.
PY - 2013
Y1 - 2013
N2 - A complete experimental study of temperature dependence of the total spectral emissivity has been performed, for the first time, for absorber-reflector selective coatings used in concentrated solar power (CSP) systems for energy harvesting. The coating consist of double cermet layers of silicon oxide with different amounts of molybdenum over a silver infrared mirror layer. The experimental measurements were carried out by a high accurate radiometer (HAIRL) with controlled atmosphere in the mid-infrared and for temperatures between 150 and 600 C. The spectral emissivity is nearly constant in this temperature range. Therefore, the temperature dependence of the total emissivity is given by Planck function. These results were compared with those obtained with the usual calculus using room temperature reflectance spectrum. Finally, the performance of the coating was analyzed by comparison of coated respect to non-coated stainless steel.
AB - A complete experimental study of temperature dependence of the total spectral emissivity has been performed, for the first time, for absorber-reflector selective coatings used in concentrated solar power (CSP) systems for energy harvesting. The coating consist of double cermet layers of silicon oxide with different amounts of molybdenum over a silver infrared mirror layer. The experimental measurements were carried out by a high accurate radiometer (HAIRL) with controlled atmosphere in the mid-infrared and for temperatures between 150 and 600 C. The spectral emissivity is nearly constant in this temperature range. Therefore, the temperature dependence of the total emissivity is given by Planck function. These results were compared with those obtained with the usual calculus using room temperature reflectance spectrum. Finally, the performance of the coating was analyzed by comparison of coated respect to non-coated stainless steel.
KW - Cermets
KW - Infrared emissivity
KW - Mo/SiO
KW - Solar selective absorber
KW - Spectrally selective coating
UR - https://www.scopus.com/pages/publications/84880632252
U2 - 10.1016/j.solmat.2013.07.002
DO - 10.1016/j.solmat.2013.07.002
M3 - Article
AN - SCOPUS:84880632252
SN - 0927-0248
VL - 117
SP - 390
EP - 395
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
ER -
