Exergy applied to the heat conduction analysis in glass covers of a solar cooker box-type with internal and external reflectors

8th International Congress of Engineering Physics

物理学;工业技术

Terres, H.^1 ; Lizardi, A.^1 ; Chávez, S.^1 ; López, R.^1 ; Vaca, M.^1

Universidad Autónoma Metropolitana, Unidad Azcapotzalco, Departamento de Energí, Area de Termofluidos, Col. Reynosa Tamaulipas, Azcapotzalco, D.F., San Pablo 180

02200, Mexico^1

关键词: Cover glass;    Energy availability;    External reflectors;    Glass covers;    Glasses In;    Heat-conduction analysis;    Heating process;    Solar cookers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/792/1/012012/pdf
DOI  :  10.1088/1742-6596/792/1/012012

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this work, an exergy evaluation to determine the energy availability across to glass covers, place where the solar radiation enters toward a solar cooker box-type is done. Considering the heating process of water, the energy not used is quantified by means of exergy. The results allow identifying the glasses in the cover as the zone where the solar cooker could be improved. The conduction heat transfer losses for the glasses is most big than 75%. Because the values for the conduction heat losses are around 90%, which are very important, this allows to identify the cover glass as the area where improvements could be made in this type of solar cookers.