Thermal and optical analysis of selective absorber coatings based on soot for applications in solar cookers

8th International Congress of Engineering Physics

物理学;工业技术

Servín, H.^1,3 ; Peña, M.^1 ; Sobral, H.^2 ; González, M.^3

Universidad Michoacana de San Nicolás de Hidalgo FCFM-UMSNH, Michoacán, Morelia, Mexico^1

Universidad National Autónoma de México CCADET-UNAM, Ciudad, Mexico^2

Universidad Intercultural Indígena de Michoacán LDS-UIIM, Pátzcuaro, Michoacán, Mexico^3

关键词: Cooking power;    Diffuse reflectance;    Integrating spheres;    Optical analysis;    Overall efficiency;    Selective absorber coatings;    Solar cookers;    Thermal tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/792/1/012095/pdf
DOI  :  10.1088/1742-6596/792/1/012095

学科分类：工业工程学

来源: IOP

【 摘 要 】

The thermal and optical properties of selective absorber coatings of a solar cooker have been investigated. Coatings have been prepared using soot from pine resin, wood stove and sugarcane, previously separated by size. Results show that the cooking power and the overall efficiency of these pots are higher than others painted with black primer. Besides, by using an integrating sphere, the diffuse reflectance of absorbers has been obtained. Lower values of the reflectance have been measured for the pots covered with soot, showing a high correlation with the results achieved from the thermal tests, considering the measurement errors.