Optimizing Gas-Filled Spaces to Numerically Assess the Performance of a Single-Glazed Photovoltaic Thermal Hybrid
Year: 2025
Type: article
Abstract: To minimize energy loss and exergy destruction, it is necessary to optimize the single glazing area. The inadequate thermo-physical properties of the air hinder the reduction of heat loss through the single glazing of the photovoltaic thermal hybrid system. This study aims to investigate the impact of trapped gases (Argon, Xenon, Sulfur dioxide, Krypton, and Carbon monoxide) between the glass cover and the absorber (PV model) on the efficiency, useful heat energy, overall heat loss coefficient, and outlet temperature of the photovoltaic thermal hybrid panel. The study used the novel Eismann correlation to iteratively assess heat transmission in gas-filled spaces, aiding in the determination of optimal distances. In addition, he examines the effects of these gases on exergy efficiency, destruction energy, and system energy. When comparing rare gases, Xenon exhibits the highest thermal performance, followed by Krypton and Argon, in comparison to air. Their total combined efficiency with various filling gases is as follows: 49.35% for Xenon, 48.72% for Krypton, 48.10% for Argon, 47.47% for sulfur dioxide, 46.68% for carbon monoxide, and 46.50% for air. The optimal gas-filled spaces corresponding to these total combined efficiencies are 4 mm for Xenon, 5 mm for Krypton, 8 mm for Argon and sulfur dioxide, and 10 mm for carbon monoxide and air. Similarly, the use of the exergy technique results in the identification of the same ideal dimensions for the gas-filled spaces.
Authors: Djahid Gattal, Rabia Khelif, Adel Almabrouk
Institutions: Badji Mokhtar-Annaba University, University of Gharyan
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4407634878