Performance improvement of photovoltaic/thermal collectors based on the optimized design of efficient innovative multiple-impinging slot jets

• Published in: Solar energy Vol. 283; p. 112992
• Main Authors: Khelifa, Abdelkrim, Abdelgaied, Mohamed, Harby, K., El Hadi Attia, Mohammed
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15-11-2024
• Subjects: Developed cooling channel; Jet impingement; Optimized design; Performance improvement; Solar PVT collectors; Vortex packets; Optimized design; Solar PVT collectors; Jet impingement; Performance improvement; Developed cooling channel; Vortex packets
• ISSN: 0038-092X
• DOI: 10.1016/j.solener.2024.112992

•PVT collectors with an innovative efficient multiple-impinging slot jets.•Optimized design of innovative efficient multiple-impinging slot jets was studied.•Multiple-impinging slot jets with 45 mm pitch represent the best design.•Innovative design improved electricity generation and electrical efficiency by 17.91% and 22.26%.•Innovative design improved the thermal and overall efficiencies by 173.87% and 94.31%.
The air-based photovoltaic/thermal (PVT) collectors represent an effective and environmentally safe option for producing electrical energy and heating buildings to overcome the problem of scarcity and environmental pollution resulting from fossil fuels, their current contribution is still limited worldwide due to their low overall efficiency. In this context, the current study aims to present an innovative and developed cooling technique integrated with PV modules to achieve the highest overall efficiency of PVT collectors. To achieve this goal, the innovative efficient multiple-impinging slot jets were incorporated with the bottom surface of the cooling channels to enhance the overall efficiency of PVT collectors. To get the optimized design of developed cooling channels incorporated with the innovative efficient multiple-impinging slot jets that achieve the highest overall efficiency of developed PVT collectors, seven different designs of cooling channels with different multiple-impinging slot jets pitch distances (20, 25, 30, 35, 40, 45, and 50 cm) were proposed and compared to the PVT collector with classical cooling channels under the same climate conditions. The results presented that, developed the design of cooling channels using innovative multiple-impinging slot jets with 45 mm pitches represents the optimized design that achieves the highest performance of developed PVT collectors. Where, the improvement rates in electricity generation, thermal, electrical, and overall efficiencies of developed PVT collectors using innovative multiple-impinging slot jets reached 17.91 %, 173.87 %, 22.26 %, and 94.31 %, respectively compared to the classical PVT collectors.