Performance comparative study on passively cooled concentrated photovoltaic (PV) using adsorption/desorption and heat sink cooling methods: Experimental investigations

Mohammed H. Hamed, Hamdy Hassan, Shinichi Ookawara and Sameh A. Nada

Energy, 2024, vol. 307, issue C

Abstract: Concentrated photovoltaic (PV) is a suitable solution for reducing the cost of a PV system by focusing solar radiation on the panel with cheap collectors. However, increasing the radiation on the PV panel resulted in a higher operating temperature. The elevated temperature harms the panel's efficiency, which results in a reduced output of the generated power and PV's short life span. Considering these concerns, researchers introduced many cooling methods for more efficient and prolonged PV life. The adsorption/desorption cooling method is a new trend in PV cooling that utilizes atmospheric water harvesters to capture water from the atmosphere at night and release part of the PV heat in the daytime by evaporation of the adsorbed water. This article uses silica gel as the atmospheric water harvester to cool low-concentrated PV in the presence/absence of metal heat sinks. Three configuration designs are investigated for PV cooling: (i) cooling the concentrated PV with silica gel bed, (ii) cooling the concentrated PV with a combination of aluminum heat sink and silica gel bed, and (iii) cooling the concentrated PV with aluminum heat sink only. The work was conducted experimentally over 3 consecutive days, and the three configurations were tested at the same period and compared. It was found that the configuration, which uses a combination of a heat sink and silica gel bed, performs best with an average PV temperature reduction of 9.8 °C and enhanced generated power of 29.8 %.

Keywords: Concentrated photovoltaic; Passive cooling; Adsorption/desorption; Heat sinks; Thermal management (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:307:y:2024:i:c:s0360544224024745

DOI: 10.1016/j.energy.2024.132700

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