Performance improvement of a photovoltaic - Thermoelectric hybrid system subjecting to fluctuant solar radiation

Zhang, Jin; Xuan, Yi

doi:10.1016/j.renene.2017.07.003

Cited by 53 publications

(21 citation statements)

References 36 publications

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“…The solar radiation (Q) reading was also taken and the result shows that the fluctuation of temperature is proportional to the fluctuation of solar radiation. This result comes into agreement with Jin Zhang [5] and concludes that as the solar radiation varies and weather changes over time in actual operation, it reflects the temperature. It can be expected that the power output from the TEG array will fluctuate over the temperature fluctuation.…”

Section: Average Daily Temperature For Teg Hot Side Applicationsupporting

confidence: 85%

“…PV-TEG combined system has been applied in many configurations where both modules can either be physically integrated or separated. Common type of PV-TEG hybrid system developed were (1) by 859 directly combining the TE modules at the back of PV panels/cell [2][3][4] and (2) by using spectrum splitter to separate and reflect the solar photon that cannot be absorb by PV to the TEG [5][6][7][8][9][10]. The system usually consists of PV modules or panels, TEG modules and a cooling system, where different elements were added or modified to maximize the output performance.…”

Section: Introductionmentioning

confidence: 99%

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Temperature distribution analysis of monocrystalline photovoltaic panel for Photovoltaic-Thermoelectric generator (PV-TEG) hybrid application

Ruzaimi

Shafie

Hassan

et al. 2020

IJEECS

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An experiment has been carried out to prove the practicality of converting the waste heat from PV panels into electrical energy by observing the temperature levels and distribution of a conventional monocrystalline silicon (Mono c-Si) photovoltaic (PV) panels for photovoltaic-thermoelectric generator (PV-TEG) hybrid application of a Hybrid Agrivoltaic (HAV) Greenhouse System project. From the observation, highest temperature of the PV backside panel surface reached 81.1°C during solar noon and expected to reach even higher during hot season. The highest power output from the 160 numbers TEG modules in series and parallel configuration were calculated to reach 119 Watt during that time at ΔT 56.1 °C. This output is expected to fluctuate over the weather temperature fluctuation throughout the day. Meanwhile, for the heat distribution, it is best to apply the TEG arrays with optimized PV angle setup, where the temperature seems to be distributed evenly at all time, to provide optimum heat source to the TEG modules. It was concluded that the excess heat from the bottom surface of PV panels can be utilize by converting the heat via temperature differential to harvest additional electrical energy by integrating TEG system, hence maximizing the potential of solar radiation capacity in generating clean renewable energy.

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Section: Average Daily Temperature For Teg Hot Side Applicationsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Temperature distribution analysis of monocrystalline photovoltaic panel for Photovoltaic-Thermoelectric generator (PV-TEG) hybrid application

Ruzaimi

Shafie

Hassan

et al. 2020

IJEECS

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show abstract

“…The thermal fluids have recommendable thermal properties; such nanofluids which have particularly favorable thermal conductivity compared with other base coolant fluids as oil, water, glycerine, etc. Since the thermohydraulic characteristics of nanofluids are worthy, therefore, different sorts of nanofluids are applied in many engineering applications—traditional and compact HSs, solar energy, heat pipes, thermal energy storage, and free and forced convection . However, these applications using nanofluids have some limitations that cannot be neglected.…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional computational comparison of mini‐pinned heat sinks using different nanofluids: Part two—energy and exergy characteristics

Al‐damook

Alfellag

Khalil

2019

Heat Trans. Asian Res.

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The energy and exergy characteristics of 3D-pinned heat sink (HS) designs have been computationally compared as the second part of a three-part investigation. Different pin profiles, such as circular, square, triangular, strip and elliptic pins, and without pin HS are conducted with three different types of nanofluids-Al 2 O 3 -water, SiO 2 -water, and CuO-water for laminar forced convection. The concentrations of nanofluids vary from 0 to 5 vol% with different Reynolds numbers ranging between 100 and 1000. The finite volume method employing the SIMPLE algorithm for a computational solution is applied to solve the Navier-Stokes and energy equations. Four criterions studies are explained-energy efficiency, exergy loss, and exergy efficiency of HSs with pressure drop. The results showed that the highest energy and exergy efficiencies are nearly 76% and 57%, respectively, for elliptic-pinned HSs using pure water, while about 82% and 62% using 5 vol% of SiO 2 -water nanofluids. Besides, the elliptic-pinned HSs have a favorable reduction in the exergy loss, nearly 17% using 5 vol% of SiO 2 -water nanofluids. Subsequently, the elliptic-pinned HS is recommended to apply with pure water considering the development in pressure drop required. However, the elliptic-pinned HSs could be employed with 5 vol% of SiO 2 -water nanofluids regardless of the development in pressure drop required for thermal energy dissipation applications with more exergy efficiency and reduction of exergy loss. K E Y W O R D Sdifferent nanofluids, different pinned heat sinks, energy and exergy characteristics, exergy loss, thermal energy enhancement

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“…Kil et al discovered in their work that active cooling below the surrounding temperature uses more energy and thus is not desirable for PV‐TEG system. Zhang et al suggested a thermal management system that uses an adjustable cooling block that mitigates fluctuation in temperature difference in the TEG caused by the intermittent solar radiation. The PV‐TEG was tested with a new cooling system, and the results showed that improved power output could be achieved.…”

Section: Comparative Assessment Of Integrated Pv‐teg Devicesmentioning

confidence: 99%

A review on the performance of photovoltaic/thermoelectric hybrid generators

et al. 2020

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Summary Utilization of a broad range of solar spectrum has the potential for high power output from solar cells. However, solar photovoltaics (PVs) can convert only part of the solar electromagnetic spectrum into electricity efficiently. The remaining of the solar radiation is often dissipated in the form of heat, which causes performance reduction and reduces the life expectancy of the solar PV cell. Thermoelectric generators (TEGs) are devices that operate like a heat engine by converting thermal energy into electricity through thermoelectric effect. Integrating a TEG into a PV converter will enhance its efficiency and reduce the amount of heat dissipated. Different studies have been carried out and are still taking place to increase the total efficiency of a coupled photovoltaic thermoelectric generator (PV‐TEG) system. This review discusses the concept of PV converters and thermoelectric devices and presents the various models and numerical and experimental investigations on performance enhancement of integrated PV‐TEGs. The influence of key parameters on the performance of PV‐TEG were also discussed. The review is expected to serve as a reference to recent work on research and development of integrated PV‐TEG systems.

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Performance improvement of a photovoltaic - Thermoelectric hybrid system subjecting to fluctuant solar radiation

Cited by 53 publications

References 36 publications

Temperature distribution analysis of monocrystalline photovoltaic panel for Photovoltaic-Thermoelectric generator (PV-TEG) hybrid application

Temperature distribution analysis of monocrystalline photovoltaic panel for Photovoltaic-Thermoelectric generator (PV-TEG) hybrid application

Three‐dimensional computational comparison of mini‐pinned heat sinks using different nanofluids: Part two—energy and exergy characteristics

A review on the performance of photovoltaic/thermoelectric hybrid generators

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