An innovative hybrid system consists of a photovoltaic solar chimney and an earth-air heat exchanger for thermal comfort in buildings

Alkaragoly, Mohammed  Khalaf Ulaiwi; Maerefat, Mehdi; Targhi, Mohammed Zabetian; Abdljalel, Asmaa

doi:10.1016/j.csite.2022.102546

Cited by 10 publications

(1 citation statement)

References 38 publications

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“…Agathokleous et al [32] conducted a thermal analysis of a naturally ventilated BIPV system, analyzed the thermal characteristics of the BIPV system in both indoor and outdoor environments, and estimated the convective heat transfer coefficients for both conditions. Mohammed et al [33] proposed a novel renewable energy system consisting of a solar chimney, PV panels, and a soil-air heat exchanger, and investigated the natural ventilation within the system via the thermal buoyancy alone. Benzarti et al [34] inserted a twisted baffle into a naturally ventilated BIPV system and explored the role that it played in improving the heat dissipation of PV panels.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Air-Cooled Channels of Different Sizes in Naturally Ventilated Photovoltaic Wall Panels

Zheng,

Miao,

et al. 2023

Buildings

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In practical engineering applications, natural air cooling is often utilized for photovoltaic (PV) facades. However, the natural-air-cooling method is not effective at cooling PV wall panels, and the high temperatures accumulated on the surface of PV panels not only affect the electrical efficiency and service life of the PV modules, but also increase the energy consumption of the building. In this paper, we propose the vertical installation of heat dissipation fins in naturally ventilated PV wall panels. We used ANSYS Fluent to establish the simulation model of naturally ventilated PV wall panels and validate it. By simulating the air-cooled channels in PV wall panels with different sizing parameters, the temperature and flow rate variations were comparatively analyzed in order to optimize the air-cooled-channel sizes. The results show that installing the fins vertically in the air-cooled channel provided better cooling for the PV panels and enhanced the air heat collection effect. Additionally, it improved the airflow rate in the channel. As the thickness of the finned air-cooled channel increased or the width decreased, the temperature on the surface of the PV panels showed a decreasing trend. Compared to the flat-plate air-cooled channel, the finned air-cooled channel, with a thickness of 100 mm and a width of 20 mm, decreased the peak and average temperatures of the PV-panel surface by 3.9 °C and 8.1 °C, respectively, and increased the average temperature of the air at the outlet by 11.2 °C.

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Section: Introductionmentioning

confidence: 99%