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Título del libro: Proceedings Of The Ises Solar World Congress 2019 And Iea Shc International Conference On Solar Heating And Cooling For Buildings And Industry 2019
Título del capítulo: Preparation and characterization of absorbent films by ultrasonic spray pyrolysis technique

Autores UNAM:
ELVIRA BARRERA CALVA;
Autores externos:

Idioma:

Año de publicación:
2020
Palabras clave:

Film preparation; Hematite; Iron; Manganese; Molar concentration; Solar heating; Ultrasonic applications; X ray powder diffraction; Deposition temperatures; Emittances; Optical response; Roughness analysis; Temperature range; Ultrasonic spray pyrolysis technique; Spray pyrolysis


Resumen:

Films of Fe2O3: Mn were obtained using ultrasonic spray pyrolysis technique. Deposits of this material were made on Titanium plates in a temperature range of 350 to 600 °C in steps of 50 °C. The concentrations of Fe and Mn varied in the solutions to be sprayed. For the concentration of 0.0015 molar of Fe and 0.0035 molar of Mn and at a temperature of 600 ° C it was obtained that the absorpbance has a value of 0.943 and the emittance value of 0.07, which are competitive to the commercial absorber TiNOx. X-ray diffraction analysis shows that the phase that this material presents corresponds to the structure of the hematite, on the other hand, the roughness analysis of the films show that this parameter varies depending on the deposition temperature, being fundamental in the optical response of the material. © 2019. The Authors. Published by International Solar Energy Society Selection and/or peer review under responsibility of Scientific Committee


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