Empirical study on thermal performance through separating impacts from a hybrid PV/TE system design integrating heat sink

Pang, Wei; Liu, Yu; Shao, Shimiao; Gao, Xueshan

doi:10.1016/j.icheatmasstransfer.2014.11.004

Cited by 37 publications

(16 citation statements)

References 23 publications

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“…The collected power from the PV module is dissipated into the resistor and stored in a battery. The heat sink is used for heat dissipation of the PV module, which cools down the surface of the PV module [18].…”

Section: Floating Tracking Concentrating Cooling (Ftcc)mentioning

confidence: 99%

Optimal Switching Control of Flow in PV/T Systems with Forced Circulation: Model Development

2018

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Cooling the operating surface is a key operational factor to take into consideration to achieve higher efficiency when operating solar photovoltaic systems. Appropriate cooling may improve the electrical efficiency and decrease the rate of cell degradation with time, resulting in maximization of the life span of photovoltaic modules. The excessive heat removed by the cooling system can be used in domestic, commercial or industrial applications. The hybrid photovoltaic/thermal (PV/T) system cooled by forced water circulation is one of the most efficient methods used to improve the electrical performance of a PV module. These systems operate mostly on the principle in cooling the PV module at a constant flow rate. However, the optimal PV output power cannot be achieved due to the circulating water not absorbing most of the heat on the surface of the PV module. In order to solve this problem, a mathematical model dealing with the optimal switching of flow in PV/T systems with forced circulation has been developed, with the aim of controlling the surface operating temperature whilst increasing the conversion efficiency. The optimal switching control model is used to reduce the surface operating temperature of the PV module, where it is simulated by making use of the SCIP (Solving Constrained Integer Programs) solver in the optimization toolbox in MATLAB. The simulation results illustrate that the optimal switching control of flow may improve the electrical output power of a PV module, as well as effectively reducing the surface temperature thereof. Furthermore, an economic feasibility study was performed to compare these systems, where the optimal switching control strategy has a significantly higher initial capital cost compared to the standard PV system. However, when studying both systems over their predicted lifetime, the optimal switching control strategy generates a significantly higher profit, regardless of its extortionate initial capital cost, and is, therefore, the ultimately efficient system.

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Section: Floating Tracking Concentrating Cooling (Ftcc)mentioning

confidence: 99%

Optimal Switching Control of Flow in PV/T Systems with Forced Circulation: Model Development

2018

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“…Willars‐Rodríguez et al descripted a hybrid module consisting of concentrating Fresnel lens, PV modules, Thermoelectric generator (TEG) module, and heat absorbing element. The experimental results show that this system can generate the eclectic power of 7.0 W and the thermal power of 30.0 W with the input solar radiation power of 120 W. Pang et al evaluated the thermal behaviours and the cooling characteristic of a PV‐TE system with an optimized TE–heat sink (HS) integrating structure. Compared with the traditional one, this system enhanced the cooling performance by 27%.…”

Section: Introductionmentioning

confidence: 99%

Simulation and experiment of a PV‐MCHP‐TE system and ambient parameters impacts

Zhou

Liu

2020

Int J Energy Res

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Summary Combining the photovoltaic (PV) with the thermoelectric (TE) can obtain higher electrical outputs, because the thermal energy produced by the PV cells can be used to produce more electricity by the TE device. This paper built the mathematical model on the energy flow of the PV–microchannel heat pipe (MCHP)–TE system then verified the correctness of the model via the experiment. In addition, the impacts of the different wind speed, different solar radiation, and different ambient temperature on the PV‐MCHP‐TE system have been analysed. The result shows that the maximum difference value of the power output between the simulation and experiment is 0.16 W, so the simulated values and experimental values are in good agreement. At the same time, within the scope of the ambient parameters set in the simulation, when the solar radiation raises, the electrical efficiency of the PV‐MCHP‐TE system decreases, but when the wind speed raises, the electrical efficiency of this system will decrease more and more slowly. This work will lay the foundation for the performance forecasting of the system throughout the year.

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“…23 There are many different active and passive cooling methods to improve efficiency of PVT systems. While heat sink including thermoelectric generators, 24 microchannel PV cell, 25 using nanofluid, 26 using PCM, 27 direct liquid-immersion cooling, 28 thermosiphon system in a flat-box absorber, 29 using hybrid microchannel with nanofluid, [30][31][32] heat sink including nanofluid could be listed as passive cooling methods; jet impingement, water spraying, using ferrofluid and magnetic field and jet array nanofluids impingement could be considered active cooling system in the literature. [33][34][35][36] There are also some studies about focusing on the temperature effect and efficiency for PVT systems.…”

Section: Introductionmentioning

confidence: 99%

Energy, exergy, and economical analyses of a photovoltaic thermal system integrated with the natural zeolites for heat management

Kandilli

2019

Int J Energy Res

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Summary In this study, the first time in the literature, natural zeolite has been employed for photovoltaic thermal (PVT) and experimentally tested as a thermal energy storage material. The main aim of the paper is to introduce natural zeolite as a heat storage material for PVT systems. The PVT systems integrated with phase change materials and natural zeolite were designed, the components of the system were explained, the thermodynamical modelling including the first and second laws was presented, the system performances were evaluated, performance parameters were investigated, energy and exergy efficiencies were determined, and economical analyses of each system were performed. Besides, all results were compared with a conventional PVT system. The average overall energy efficiency values for PVT experiments were 33% for paraffin, 37% for stearic acid, 40% for zeolite, and 32% for conventional PVT systems. The payback period of the PVT system with paraffin, zeolite, stearic acid, and conventional PVT was calculated as 10, 8, 9, and 9 years, respectively. The results show that the natural zeolite is a material with significant potential to be used for heat management in PVT for any meteorological condition.

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Empirical study on thermal performance through separating impacts from a hybrid PV/TE system design integrating heat sink

Cited by 37 publications

References 23 publications

Optimal Switching Control of Flow in PV/T Systems with Forced Circulation: Model Development

Optimal Switching Control of Flow in PV/T Systems with Forced Circulation: Model Development

Simulation and experiment of a PV‐MCHP‐TE system and ambient parameters impacts

Energy, exergy, and economical analyses of a photovoltaic thermal system integrated with the natural zeolites for heat management

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