Study of a Panel of Recyclable Materials to Improve Energy Efficiency During the Winter Season

in this article, two panels of recyclable materials have been developed and studied, one panel being coated with Plexiglas and the other with a Fresnel lens. The temperature is measured with thermocouples type K. For several consecutive days measurements were performed at different intensities of sunshine. It has been shown that the use of a Fresnel lens to heat the air in the prepared panel with sunlight is not effective.