The effect of temperature distribution on parabolic triangular-based CPVT system performances: Electrical and thermal perspectives

Demircan, Cihan; Bayrakçı, Hilmi Cenk; Keçebaş, Ali; Calise, Francesco; Vicidomini, Maria

doi:10.1016/j.tsep.2023.101664

Cited by 8 publications

(5 citation statements)

References 54 publications

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“…It is clear from the literature that many studies have focused on the CPV-T system's optical, thermal, and electrical analysis. However, most of these studies have considered only one or two aspects, optical-electrical [35] or thermal-electrical, [11,16,21,23,27] instead of an integrated computational model considering all three elements. The integrated model becomes necessary for evaluating the performance of the CPV-T system accurately under actual time conditions.…”

Section: Objectives and Noveltymentioning

confidence: 99%

“…The results indicated thermal and electrical efficiencies varied marginally with coolants, and water emerged as a slightly superior option as a heat transfer fluid. Demircan et al [ 27 ] analyzed the effect of water and R134a as coolants for CPV‐T systems and reported water to be a better coolant for enhanced thermal and electrical efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Model for Comprehensive Performance Investigation of Solar Concentrated Photovoltaic‐Thermal System Embedded with Microchannel Heat Sinks

Chaurasia,

Reddy

2024

Energy Tech

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Concentrated photovoltaic (CPV) is a well‐established renewable energy technology. A significant challenge in CPV systems is their low efficiency, majorly due to localized heating yielded from concentration, often requiring the use of cooling systems. The accurate performance analysis and cooling system design for CPV systems require a multiphysics model. Herein, an integrated optical–thermal–electrical model is proposed for the performance evaluation of CPV systems incorporated with different configurations of microchannel heat sinks. The heat sink configuration includes 116 parallel and counter microchannels (Configuration A and B), a single wide microchannel (Configuration C), and single wide minichannel (Configuration D) heat sinks. This study involves 3D Monte‐Carlo ray tracing, finite volume method, and cell‐based electrical modeling. The results indicate that the flux profile over the absorber is highly nonuniform in nature. Furthermore, the CPV system with a Configuration C heat sink achieves a better uniformity in temperature, providing an optimized thermal performance of 64.63%. Moreover, the integrated model considers the impact of PV cell current mismatch that becomes prominent at increasing incidence angles. A maximum deviation of 6.9% in electrical power is obtained while comparing predicted numerical results against experimental results available in literature.

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Section: Objectives and Noveltymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integrated Model for Comprehensive Performance Investigation of Solar Concentrated Photovoltaic‐Thermal System Embedded with Microchannel Heat Sinks

Chaurasia,

Reddy

2024

Energy Tech

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“…introduced a finite-volume method in one dimension, which takes into account energy and mass balances, performing energetic and exergetic studies [8]. Demircan et al utilized this model along with an electrical model to investigate the operational conditions and efficiencies of PV and CPVT systems [9].…”

Section: Introductionmentioning

confidence: 99%

A 3D symmetry-preserving simulation of a concentrated photovoltaic thermal (CPVT) solar collector

Santos,

Rigola,

Castro

et al. 2024

J. Phys.: Conf. Ser.

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In this work, a general collocated and unconditionally stable framework on unstructured meshes for solving Conjugate Heat Transfer (CHT) problems is presented by means of preserving the underlying symmetries of the continuous differential operators, thus not introducing uncontrolled artificial numerical dissipation to our system. Then, this framework is applied to solve a Concentrated PhotoVoltaic Thermal (CPVT) Solar Collector. Furthermore, a new boundary condition is implemented to consider the heat transfer between enclosed elements, including radiation. The model is validated using experimental data.

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“…The cooling of PV modules with PV/T application is the solution to this problem. 7 The electrical efficiency significantly increased as a result of the decreased temperature. The PV module efficiency falls at a rate of 0.4%–0.65% for every 1°C in increase in the module temperature, so the drawback of higher operation temperature represents a significant barrier.…”

Section: Introductionmentioning

confidence: 99%

“…The considerably decreased panel temperature has been reported to positively prolong the lifetime duration of PV modules. [5][6][7] The excessive radiation conversion on PV modules causes their working temperatures to increase, which reduces their electrical efficiency and shortens their useful lives. This served as the driving force for the creation of PV/T systems, which were created to capture the waste heat produced by PV cells in order to lower their operating temperatures and improve their performance.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on optimization of coolant mass flow rate in a photovoltaic/thermal system

Kayri

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Steady, continuous, and homogeneous cooling of photovoltaic panels that consume less energy for circulation of coolant is extremely important for preventing higher energy loses especially in hotter conditions. In this study, a novel steady continuous active cooling application with water, as the coolant, was applied in a compact photovoltaic/thermal hybrid system in order to find out the effects of coolant mass flow rate and to optimize the required amount of cooling for maximizing electrical efficiency by measuring the real load voltage and current values formed on the resistive load designed for the selected photovoltaic module. It is found that the reduction in panel temperature for the cooled panel can be accepted to be enough, especially for 31.38 kg/h coolant mass flow rate, since the operating temperatures of the cooled panel reached quite near to the ambient temperature. The means of the temperature reduction for cooled panels were between 13.06°C and 13.74°C as compared with the referent panel. The increase rate of average power for the cooled operations were in between 6-8%, while the instantaneous power increase, especially in midday periods, were reached to its highest values between 13% and 15% in comparison to the referent panel. The highest percent increase in power output was derived as 7.62% for the ṁ = 31.38 kg/h coolant mass flow rate at 12:30 pm. The highest daily cumulative electrical energy production was observed for the coolant mass flow rate of 39.66 kg/h, with 6.3% of increase.

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The effect of temperature distribution on parabolic triangular-based CPVT system performances: Electrical and thermal perspectives

Cited by 8 publications

References 54 publications

Integrated Model for Comprehensive Performance Investigation of Solar Concentrated Photovoltaic‐Thermal System Embedded with Microchannel Heat Sinks

Integrated Model for Comprehensive Performance Investigation of Solar Concentrated Photovoltaic‐Thermal System Embedded with Microchannel Heat Sinks

A 3D symmetry-preserving simulation of a concentrated photovoltaic thermal (CPVT) solar collector

An experimental study on optimization of coolant mass flow rate in a photovoltaic/thermal system

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