Eur. Phys. J. Appl. Phys.
Volume 83, Number 3, September 2018
Materials for Energy harvesting, conversion and storage (Icome 2017)
|Number of page(s)||9|
|Section||Physics of Energy Transfer, Conversion and Storage|
|Published online||26 October 2018|
Intensification of a flat solar collector efficiency★
Département de Physique, Faculté de Sciences, Université de Batna, Algeria
2 Aix-Marseille University, CNRS, IUSTI UMR 7343, 5 rue Enrico Fermi, 13453 Marseille Cedex 13, France
* e-mail: firstname.lastname@example.org
Accepted: 19 September 2018
Published online: 26 October 2018
An experimental study was carried out to investigate the intensification of the efficiency of a flat solar collector. To achieve this aim, we investigated the effect of the thickness of the air gap between the glazing cover and the plate absorber and the effect of presence of transparent partitions in the air gap. Indeed, when the thickness of the air gap is increased, the natural convection is intensified, which induces high thermal losses on the front part of the collector. The result of this study highlights that thicknesses larger than the reference one, given by the manufacturer, decrease the efficiency, while thicknesses smaller than the reference one increase the efficiency. The presence of transparent partitions in the air gap leads to the weakening of the natural convection and thus to the enhancement of the solar collector efficiency. Two situations were studied. In the first one, only transverse partitions were placed in the air gap; in the second one, longitudinal partitions were added to the transverse ones to form a crossed structure of partitions. The obtained results showed that in both situations the enhancement of the efficiency is significant and that the crossed structure induces the better efficiency.
© F.-Z. Ferahta and C. Abid, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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