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Heat Transfer Analysis of Ventilated Photovoltaic Wall Panels with Curved Ribs for Different Parametric Cavity Structures
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Heat Transfer Analysis of Ventilated Photovoltaic Wall Panels with Curved Ribs for Different Parametric Cavity Structures
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Journal Article
Heat Transfer Analysis of Ventilated Photovoltaic Wall Panels with Curved Ribs for Different Parametric Cavity Structures
2025
Overview
Photovoltaic (PV) wall panels are an integral part of Building-Integrated Photovoltaics (BIPV) and have great potential for development. However, inadequate heat dissipation can reduce power generation efficiency. To reduce the temperature of photovoltaic wall panels and improve the photovoltaic conversion efficiency, this paper constructs a computational fluid dynamics (CFD) numerical model of ventilated photovoltaic wall panels and verifies it, then simulates and analyzes the effects of three cavity structure forms on the thermal performance of photovoltaic wall panels and optimizes the dimensional parameters of the curved-ribbed cavity structure. The average surface temperatures of flat-plate, rectangular-ribbed, and arc-ribbed cavity structure PV wall panels were 59.42 °C, 57.56 °C, and 55.39 °C, respectively, under natural ventilation conditions. Among them, the arc-ribbed cavity structure PV wall panels have the best heat dissipation effect. Further studies have shown that the curvature, rib height, width, and spacing of the curved ribs significantly affect the heat dissipation performance of the photovoltaic panels. Compared to the flat-plate cavity structure, the parameter-optimized curved-rib cavity structure significantly reduces the average surface temperature of PV panels. As solar radiation intensity increases, the optimized structure’s heat dissipation effect strengthens, achieving a 6 °C temperature reduction at 1000 W/m2 solar radiation.
Publisher
MDPI AG
Subject
