Exergy performance assessment of a novel air-cooled photovoltaic thermal collector with a double serpentine runner

Xie, Yujie; Zhou, Jinzhi; BISENGIMANA, EMMANUEL; Jiang, Fujian; Ji, Wenhui; Zhao, Ke; Yuan, Yanping

doi:10.1016/j.applthermaleng.2023.121330

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…The slight increase in electrical efficiency is credited to the increased cooling effects, reducing the 𝑇 𝑝𝑣 of the bifacial PV cells and therefore increasing its electrical efficiency, as seen in equation ( 17). This finding is in agreement with research conducted by (Xie et al, 2024;Tiwari et al, 2023b); however, changes in Δ𝑇 were not analyzed.…”

Section: Mathematical Models For Parametric Analysissupporting

confidence: 92%

Multi-objective optimisation and sensitivity analysis of component influences on efficiency in air-based bifacial photovoltaic thermal systems (B-PVT)

Rajani,

Mat Said,

Noorden

et al. 2024

Int. J. Renew. Energy Dev.

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Bifacial Photovoltaic Thermal (B-PVT) technologies have seen significant advancements in sustainable energy production by converting solar energy into useful electric and thermal energies simultaneously. The present study explored the optimisation of these systems by first performing sensitivity analysis on design parameters to identify key variables affecting their performance efficiencies. The system design and performance were then studied simultaneously using a multi-objective optimisation algorithm NSGA-II. It was found that increasing packing factors from 0.4 to 0.8 leads to a 15% increase in both electrical and thermal efficiencies, while an asymmetry in channel depths could lead to an 8% increase in thermal efficiency. Key design parameters such as transmissivity cover, mass flow rate, packing factors and channel depth ratios were found to have the most significant influence on overall system performance. Multi-objective optimisation of design variables results in a Pareto front describing trade-offs between solutions of conflicting objectives of performance. Optimisation with preferences towards overall efficiency over temperature differential produces solutions with a high overall efficiency yield of 70.79%, requiring specific values for mass flow rate (0.197 kg/s) and channel ratio (0.129), however at the expense of a reduced temperature differential of 5.12oC. Solutions with a balanced preference towards both objectives could produce a solution that is less biased in performance.

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Section: Mathematical Models For Parametric Analysissupporting

confidence: 92%

Multi-objective optimisation and sensitivity analysis of component influences on efficiency in air-based bifacial photovoltaic thermal systems (B-PVT)

Rajani,

Mat Said,

Noorden

et al. 2024

Int. J. Renew. Energy Dev.

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“…Each of the seven tubes demonstrated the maximum electrical efficiency when the flow rate was 0.04 kg/s and the diameter was 15 mm. Xie et al [29] constructed a double-snake flow channel to enhance heat transmission and decrease air pressure loss in the serpentine structure of the tube plate. Zareie et al [30] created 15 unique structures inspired by a branching pattern on a hexagonal grid.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Innovative Photovoltaic–Thermal (PVT) Collector Designs for Electrical and Thermal Enhancement

Wang,

Hou,

Taherian

et al. 2024

Energies

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Photovoltaic–thermal (PVT) technology is gaining popularity due to the diminishing availability of traditional fossil fuels and escalating environmental concerns. Enhancing the heat dissipation of PVT to improve its electrical and thermal performance remains a significant task. This study simulates the thermodynamic and heat transfer characteristics in multiple novel PVT structures by examining the impact of various factors such as collector materials, radiation intensity, mass flow rate, and inlet temperature. This work also identifies the optimal mass flow rate for locations with different solar radiation. The numerical results indicate that the electrical efficiency of a designed cylindrical structure has increased by 1.73% while the thermal efficiency has increased by 8.29%. Aluminum is identified as the most cost-effective material for the collector. The optimal mass flow rates in selected locations of Xining, Taiyuan, and Turpan are 0.36 kg/s, 0.35 kg/s, and 0.30 kg/s, respectively. The numerical results provide valuable insight into optimizing the design and operating conditions of PVT systems.

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Investigation on different cooling strategies for photovoltaic thermal Systems: An experimental study

Farzan,

Iranmanesh,

Mohsenifard

2024

Applied Thermal Engineering

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Exergy performance assessment of a novel air-cooled photovoltaic thermal collector with a double serpentine runner

Cited by 6 publications

References 35 publications

Multi-objective optimisation and sensitivity analysis of component influences on efficiency in air-based bifacial photovoltaic thermal systems (B-PVT)

Multi-objective optimisation and sensitivity analysis of component influences on efficiency in air-based bifacial photovoltaic thermal systems (B-PVT)

Numerical Investigation of Innovative Photovoltaic–Thermal (PVT) Collector Designs for Electrical and Thermal Enhancement

Investigation on different cooling strategies for photovoltaic thermal Systems: An experimental study

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