Theoretical study and indoor experimental validation of performance of the new photovoltaic thermal solar collector (PVT) based water system

Abdullah, Amira Lateef; Misha, Suhaimi; Tamaldin, Noreffendy; Rosli, Mohd Afzanizam Mohd; Sachit, Fadhil Abdulameer

doi:10.1016/j.csite.2020.100595

Cited by 95 publications

(28 citation statements)

References 32 publications

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“…Some studies focus on the working fluid, which normally is either air (less efficient) or water [12]. But it can be changed to achieve better thermal efficiency using various nanofluids [7,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A Simulation Study on Temperature Uniformity of Photovoltaic Thermal Using Computational Fluid Dynamics

Rosli

Latif

Nawam

et al. 2021

ARFMTS

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The temperature distribution across the photovoltaic (PV) module in most cases is not uniform, leading to regions of hotspots. The cells in these regions perform less efficiently, leading to an overall lower PV module efficiency. They can also be permanently damaged due to high thermal stresses. To enable the high-efficiency operation and a longer lifetime of the PV module, the temperatures must not fluctuate wildly across the PV module. In this study, a custom absorber is designed based on literature to provide a more even temperature distribution across the PV module. This design is two standard sets of spiral absorbers connected. This design is relatively less complicated for this reason and it allows room for adjusting the pipe spacing without much complication. The absorber design is tested via computational fluid dynamics (CFD) simulation using ANSYS Fluent 19.2, and the simulation model is validated by an experimental study with the highest percentage error of 9.44%. The custom and the serpentine absorber utilized in the experiment are simulated under the same operating conditions having water as the working fluid. The custom absorber design is found to have a more uniform temperature distribution on more areas of the PV module as compared to the absorber design utilized in the experiment, which leads to a lower average surface temperature of the PV module. This results in an increase in thermal and electrical efficiency of the PV module by 3.21% and 0.65%, respectively.

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Section: Introductionmentioning

confidence: 99%

A Simulation Study on Temperature Uniformity of Photovoltaic Thermal Using Computational Fluid Dynamics

Rosli

Latif

Nawam

et al. 2021

ARFMTS

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“…vi. The thermophysical properties of the components in the photovoltaic thermal (PVT) system are assumed constant [12,15]. vii.…”

Section: = = 4̇mentioning

confidence: 99%

“…vii. The bottom of the absorber plate, absorber tube, and side walls of the photovoltaic thermal (PVT) system are considered adiabatic walls [15]. viii.…”

Section: = = 4̇mentioning

confidence: 99%

Validation Study of Photovoltaic Thermal Nanofluid Based Coolant Using Computational Fluid Dynamics Approach

Rosli

Loon

Nawam

et al. 2021

CFDL

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In the study, the photovoltaic thermal system using nanofluid as coolant is validated using numerical approach by comparing the experimental results and simulation results. Due to high cost and difficulty in preparing nanofluid, it is more practical to perform the study using numerical approach which is convenient and saves plenty of time. The photovoltaic thermal system is investigated numerically through Computational Fluid Dynamics Approach using Ansys 19.0 Fluent Software. The numerical study is based on different solar irradiation at different hours. The coolant that is selected in the study is aluminum oxide () water nanofluid. The validation study between the experimental results and simulation results are achieved by examining the photovoltaic (PV) surface temperature and nanofluid outlet temperature. The maximum percentage of error between experimental and simulation results of PV surface temperature and nanofluid outlet temperature are 12.66% and 7.89%. Also, the mean average percentage error (MAPE) are computed for PV surface temperature and nanofluid outlet temperature. The results for PV surface temperature and nanofluid outlet temperature are 10.31% and 6.67%. Since the MAPE results are within 10% or error, it proved that there is good accuracy between the simulation and experimental results.

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“…This technique is a passive method but requires pipes and is costly. Studies such as [26,27] proved that using the PVT method, which also produces extra energy, is the most feasible solution to cool solar PV panels. This advantage is an important and efficient feature but it is still expensive to implement.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Enhancement of energy transfer efficiency for photovoltaic (PV) systems by cooling the panel surfaces

Majdi

Mashkour

Habeeb

et al. 2021

EEJET

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The thermal coefficient of a solar photovoltaic (PV) panel is a value that is provided with its specification sheet and tells us precisely the drop in panel performance with rising temperature. In desert climates, the PV panel temperatures are known to reach above 70 degrees centigrade. Exploring effective methods of increasing energy transfer efficiency is the issue that attracts researchers nowadays, which also contributes to reducing the cost of using solar photovoltaic (PV) systems with storage batteries. Temperature handling of solar PV modules is one of the techniques that improve the performance of such systems by cooling the bottom surface of the PV panels. This study initially reviews the effective methods of cooling the solar modules to select a proper, cost-effective, and easy to implement one. An active fan-based cooling method is considered in this research to make ventilation underneath the solar module. A portion of the output power at a prespecified high level of battery state-of-charge (SOC) is used to feed the fans. The developed comparator circuit is used to control the power ON/OFF of the fans. A Matlab-based simulation is employed to demonstrate the power rate improvements and that consumed by the fans. The results of simulations show that the presented approach can achieve significant improvements in the efficiency of PV systems that have storage batteries. The proposed method is demonstrated and evaluated for a 1.62 kW PV system. It is found from a simultaneous practical experiment on two identical PV panels of 180 W over a full day that the energy with the cooling system was 823.4 Wh, while that without cooling was 676 Wh. The adopted approach can play a role in enhancing energy sustainability.

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Theoretical study and indoor experimental validation of performance of the new photovoltaic thermal solar collector (PVT) based water system

Cited by 95 publications

References 32 publications

A Simulation Study on Temperature Uniformity of Photovoltaic Thermal Using Computational Fluid Dynamics

A Simulation Study on Temperature Uniformity of Photovoltaic Thermal Using Computational Fluid Dynamics

Validation Study of Photovoltaic Thermal Nanofluid Based Coolant Using Computational Fluid Dynamics Approach

Enhancement of energy transfer efficiency for photovoltaic (PV) systems by cooling the panel surfaces

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