Impact of liquid spectrum filter and solar tracker on the overall effectiveness of a photovoltaic thermal system: An experimental investigation

Sushil Kumar, Robin Thakur, Sushil Kumar, Daeho Lee and Raj Kumar

Renewable Energy, 2024, vol. 226, issue C

Abstract: The purpose of this experimental research is to improve the electrical and thermal efficiency of an innovative photovoltaic thermal setup equipped with a Fresnel lens, a nanofluid-based liquid spectrum filter, and a dual-axis solar tracker. The nanofluid, which is a combination of water and ethylene glycol solution with 0.3 wt% of ZnO nanoparticles, was used as a cooling medium. The experiments were conducted on different days that were generally sunny, hazy, and cloudy. The maximum output power of the setup increased by 4.8% and 23.8% from no-lens to single-lens concentration and from a single-stage lens to a two-stage lens concentration system, respectively. The integration of a two-stage system with a solar tracker further enhances the output power by 6.1%. Significant enhancement in the performance of the system was achieved using nanofluid coolant and sun-tracking technologies. The incident solar radiation was efficiently utilized, resulting in an appreciable increase in thermal and electrical efficiency of 6.96% and 28.85%, respectively. Therefore, the proposed system is efficient and suitable for solar photovoltaic thermal applications.

Keywords: Fresnel lens; Photovoltaic thermal system; Liquid spectrum filter; Nanofluid; Dual-axis solar tracker (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:226:y:2024:i:c:s0960148124004555

DOI: 10.1016/j.renene.2024.120390

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