5 papers
Mid-infrared optical properties of pyrolytic boron nitride in the 390 to 1050 C temperature range using spectral emissivity measurements
Iñigo González de Arrieta, Telmo Echániz, Raquel Fuente +4
This paper shows a systematic experimental and theoretical study on the temperature dependence of the infrared optical properties of pyrolytic boron nitride (pBN), from 390 to 1050…
IR radiometer sensitivity and accuracy improvement by eliminating spurious radiation for emissivity measurements on highly specular samples in the 2 to 25 μm spectral range
Telmo Echániz, Raúl BenjamÃn Pérez-Sáez, Manuel José Tello
This paper indicates that the sensitivity and accuracy of an infrared radiometer for emissivity measurements depends not only on its design and the measurement method, but also on…
Thermal emissivity spectra and structural phase transitions of the eutectic Mg-51%Zn alloy: A candidate for thermal energy storage
Telmo Echániz, Raúl BenjamÃn Pérez-Sáez, Elena Risueño +6
The thermal emissivity spectrum in the mid infrared range (3 to 21 m) as well as its dependence on temperature between 225 and 320 C has been obtained for the Mg-51%Z…
Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
Telmo Echániz, Iñigo Setién-Fernández, Raúl BenjamÃn Pérez-Sáez +3
The total emissivity of the absorbing surfaces is a critical parameter in the calculation of the radiative thermal losses in solar thermal collectors. This is because the radiative…
Spectral emissivity of copper and nickel in the mid-infrared range between 250 and 900 C
Iñigo Setién-Fernández, Telmo Echániz, Luis González-Fernández +2
A study on the radiative properties of two pure metals, copper and nickel, using a high accuracy radiometer is carried out. Their spectral emissivity between 3 and 21 μm and its d…