Numerical simulation on the efficiency of PVT system integrated with PCM under the influence of using fins

Khodadadi, Mohammadjavad; Sheikholeslami, M.

doi:10.1016/j.solmat.2021.111402

Cited by 66 publications

(15 citation statements)

References 41 publications

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“…These findings provide additional evidence when the outlet temperature from the PVT-PCM system is lower than PVT system due heat absorption by the PCM and the excessive heat is reduced when transferred to the working fluid. Khodadadi and Sheikholeslami [35] support the idea of the outlet temperature of the PVT-PCM system are lower than PVT system. Figure 9 provides the surface temperature between PVT and PVT-PCM.…”

Section: Comparison Between Pvt and Pvt-pcmmentioning

confidence: 91%

Performance Optimization of a Simulation Study on Phase Change Material for Photovoltaic Thermal

Rosli

Saleem²,

Sanusi³

et al. 2022

CFDL

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The integration of Phase Change Material (PCM) with the Solar Photovoltaic Thermal (PVT) serves as heat storage to enhance the system's performance. Temperature rises have an undesirable effect on efficiency results in a diminishment in the amount of energy produced by the solar panel. Parametric analysis and temperature investigation are involved in improving the performance of the system. The variation of performance will assist in developing an optimized PVT-PCM system. The model is validated by comparison from published journals on the studies related to phase change material implemented in solar PVT. For the variation of mass flow rate, the overall efficiencies achieved by 10 kg/h, 30 kg/h, 50 kg/h and 70 kg/h are 90.82%, 90.54%, 90.48% and 90.46%, respectively. In addition, solar irradiance of 200 W/m2, 450 W/m2 and 800 W/m2 produced 91.17%, 90.82% and 90.33% of overall efficiencies. Increased in flow rate requires stronger pumps which increase the total cost of the system. Therefore, identifying the optimal flow rate might help to achieve an appropriate thermal efficiency while sustaining in low costs. Finally, this paper presented a numerical investigation of PCM acts as promising elements incorporated in the PVT system that has the capability to reduce the temperature of the PVT-PCM system.

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Section: Comparison Between Pvt and Pvt-pcmmentioning

confidence: 91%

Performance Optimization of a Simulation Study on Phase Change Material for Photovoltaic Thermal

Rosli

Saleem²,

Sanusi³

et al. 2022

CFDL

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“…In such applications, the temperature fluctuates due to the oscillation of the incident radiation from sunrise to sunset, and the interruption of heat when the sun is absent. Therefore, researchers have used PCMs in solar thermal applications to store heat in solar stills [12,24], air heaters [25,26], and PV/T systems [27,28]. Many phase change materials are available, each with different melting and hardening points, ranging from 5 • C to 190 • C. These materials store latent heat about 5 to 14 times as much as sensible heat storage materials, such as water, pebbles, or rocks [29].…”

Section: Introductionmentioning

confidence: 99%

Adding Nano-TiO2 to Water and Paraffin to Enhance Total Efficiency of a Photovoltaic Thermal PV/T System Subjected to Harsh Weathers

et al. 2022

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Iraq is characterized by hot and sunny weather with high radiation intensity. These conditions are suitable to produce photovoltaic electricity, on the one hand, but on the other hand are not suitable for photovoltaic modules whose efficiency decreases with increasing temperature. In this study, a photovoltaic module was practically cooled by two PV/T systems, one cooled by water and the other by nanofluid and nano-paraffin. Iraqi-produced paraffin was used in this study for its cheap price, and because its melting and freezing temperature (46 °C) is close to the operating range of photovoltaic modules. Nano-TiO2 was adopted as an additive to water and paraffin. The study results showed an obvious enhancement of the thermal conductivity of both water and paraffin, by up to 126.6% and 170%, respectively, after adding a 2% mass fraction of nano-TiO2. The practical experiments were carried out outdoors in the city of Baghdad, Iraq. A fluid mass flow rate of 0.15 kg/s was selected for practical reasons, since at this rate the system operates without vibration. The PV panel’s temperature, in the PV/T system (nano-fluid and nano-paraffin), decreased by an average of 19 °C when the tested systems operated during the peak period (12 PM to 3 PM). The decrease in temperatures of the PV module caused a clear improvement in its electrical efficiency, as it was 106.5% and 57.7% higher than the PV module (standalone) and water-cooled PV system, respectively. The thermal efficiency of this system was 43.7% higher than the case of the water-cooled PV/T system. The proposed system (nano-fluid and nano-paraffin) provides a greater possibility of controlling the heat capacity and increasing both efficiencies (electrical and thermal), when compared to a standalone PV module, in harsh Iraqi weather.

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“…No matter in what field the PV/T system is used, improving its performance is the key and final objective. Many studies have been conducted to investigate the PV/T system performance involving utilizing PCM [14][15][16], using nanofluids [17,18], concentrated application [19,20], and air and water configurations [1,21,22] by various methodologies such as experimental, analytical, numerical, and simulation techniques. Due to the structure and performance improvement of the heat collector having a great influence on the whole PV/T system components' effi-ciency, technologies for this purpose, including the cooling channel design or modifications of the PV/T systems, have been developed substantially.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Optimization Design of Photovoltaic/Thermal (PV/T) Collector with Internal Corrugated Channels

Kong

Zhang

et al. 2022

International Journal of Photoenergy

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This study presents a theoretical study on the super thin and conductive thermal absorber with built-in corrugated channels on the basis of previous field experiments. The flow and heat transfer characteristics of the corrugated channels are simulated to identify the factors affecting photovoltaic/thermal (PV/T) system efficiency. The influences of the structural parameters such as the corrugation number, the corrugation area, and the flow channel width on the water outlet temperature and heat collection are discussed in order to support the structural optimization design of the hybrid PV/T system. The simulation results were validated to be in good agreement with experimental results. The results indicate that increasing inlet water velocity leads to a decrease in the outlet temperature. It was found that the corrugation area and the flow channel width have impacts on the outlet temperature of the hybrid PV/T collector panel. When the flow channel width of the absorber plate is reduced from 4 mm to 3 mm, the outlet temperature attained is between 298 and 302 K, and the heat collection is in the range of 16.2–51.4 MJ/h. This led to an increase in the amount of heat collected by 18.6%.

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Numerical simulation on the efficiency of PVT system integrated with PCM under the influence of using fins

Cited by 66 publications

References 41 publications

Performance Optimization of a Simulation Study on Phase Change Material for Photovoltaic Thermal

Performance Optimization of a Simulation Study on Phase Change Material for Photovoltaic Thermal

Adding Nano-TiO2 to Water and Paraffin to Enhance Total Efficiency of a Photovoltaic Thermal PV/T System Subjected to Harsh Weathers

Numerical Study on the Optimization Design of Photovoltaic/Thermal (PV/T) Collector with Internal Corrugated Channels

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