Experimental investigation of the effect of multi-wall carbon nanotube – Water/glycol based nanofluids on a PVT system integrated with PCM-covered collector

Naghdbishi, Ali; Yazdi, Mohammad Eftekhari; Akbari, Ghasem

doi:10.1016/j.applthermaleng.2020.115556

Cited by 89 publications

(23 citation statements)

References 47 publications

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“…In addition, the data for the best findings are also viewed to highlight the potential of this system. Table 3 shows a comparison between the various proposed systems in the literature 45,[59][60][61][62][63][64] with the present study. And finally, Figure 20 puts the findings of this study in perspective of the different achieved system efficiencies in the literature.…”

Section: Comparison Of Findings With the Literaturementioning

confidence: 95%

“…The use of nanofluids as the working fluid and utilizing PCM for thermal regulations has also been considered in different settings. 6,[59][60][61][62] The PV/T design tested in this study utilizes nanoparticles to enhance the PCM, which is known to have a low thermal conductivity. The present study compares the energy and merit function of this collector to a conventional PV module.…”

Section: Comparison Of Findings With the Literaturementioning

confidence: 99%

“…And finally, Figure 20 puts the findings of this study in perspective of the different achieved system efficiencies in the literature. 16,45,[60][61][62] The types of the PCM material were varied and are classified into organic and inorganic. Sarafraz et al 59 employed a nanofluids that comprised of a mixture of water and EG, which were at a ratio of 50:50 by volume, referred to it as 'WEG50', mixed with MWCNT nanoparticles with a weight percentage of 0.2 wt%, in addition to nonyphenol ethoxylates with a volume fraction of 0.1 vol%; to stabilize the nano-suspension.…”

Section: Comparison Of Findings With the Literaturementioning

confidence: 99%

“…The proposed system was compared to a reference PV module of the same type and size and to a similarly designed system but without the addition of Boehmite nanopowder (composite oil only). The power T A B L E 3 Summary of investigated PV/T systems in literature 45,[59][60][61][62][63][64]…”

Section: Comparison Of Findings With the Literaturementioning

confidence: 99%

“…Comparison of different types of PCM can be made by ranking each one with respect to different criteria. For instance, employing the entropy weight method and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) approach to decide upon the ideal type of PCM among an array of considered PCM material, as done by Oluah et al65 Moreover, the optimum melting point Electrical and thermal energy efficiency of PV/T systems in the literature16,45,[60][61][62] [Colour figure can be viewed at wileyonlinelibrary.com]…”

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confidence: 99%

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Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

2021

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Thermal stress causes reduction in the open circuit voltage of photovoltaic (PV) modules which results in a reduction in overall power generation. Photovoltaic thermal (PV/T) collectors have been used to mitigate this issue by providing both cooling of the cell temperature and yielding thermal energy in the same space. However, the implementation of PV/T systems in the industry is still lacking and requires further innovative solutions to achieve higher electrical and thermal efficiencies. In this article, a case study experimental and parametric analysis of a PV/T system with nano-phase change material and nanofluid, as the heat transfer fluid, is presented. The system was tested in Bangi, Malaysia and the findings have been compared with previous studies in the literature. The findings of the evaluation show average and peak overall PV/T efficiencies of 61.6% and 77.8%, respectively. Moreover, the electrical efficiency of the PV and PV/T averaged at 9.9% and 13.1%, respectively. The main reason for the drop in the PV module was its average cell temperature which was around 45.6 C, while the PV/T's average cell temperature reached 39.2 C. Finally, the average thermal efficiency of the PV/T was around 48.5% when the mass flowrate was 0.175 kg/s.

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Section: Comparison Of Findings With the Literaturementioning

confidence: 95%

Section: Comparison Of Findings With the Literaturementioning

confidence: 99%

Section: Comparison Of Findings With the Literaturementioning

confidence: 99%

Section: Comparison Of Findings With the Literaturementioning

confidence: 99%

mentioning

confidence: 99%

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Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

2021

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Thermal analysis on Darcy‐Forchheimer swirling Casson hybrid nanofluid flow inside parallel plates in parabolic trough solar collector: An application to solar aircraft

Shahzad

Jamshed

Sathyanarayanan

et al. 2021

Intl J of Energy Research

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Summary As a try, this work has been focused in the way towards the effective contribution in the field of solar aviation using renowned nanotechnology. After realizing the causes and effects of traditionally used energy forms, the search of cost‐efficient, eco‐friendly, and most prominent renewable source leads us back to the solar utilities. Research era of solar radiation‐powered aircraft has been in trend. Focusing on that, an efficient numerical model representing the flow and thermal aspects of a parabolic trough surface collector (PTSC) embedded on solar aircraft wings has been adopted for this study. As the first time with the note, an eminent and leading form of thermal efficient fluid of kind, the Casson hybrid nanofluid has been engaged with the expectations of enhanced performance in the solar aircraft wings. To test it, a trending reputable numerical scheme of the Keller‐box method has been utilized and the parametrical studies were carried out. The upshots of those studies provide the affable proofs in favor of our expectations towards the improved solar wings with better thermal efficiency. The glimpse of those successes in the parametrical level has been showcased in the forms of tables and graphs. The lateral “x” direction significant about the inertial forces, suspended particle ratio, and skin resistance phenomena, while for the transverse fluidity in the “y” direction were has to be concern about the magnetic interactions, rotational coordinates, viscous nature of the fluid along with the porous states. The power of hybrid nanofluid combos was exposed in higher notes in a unique state of solar aircraft wings. Furthermore, the thermal efficiency of hybrid nanofluids over nanofluids got down to a minimal level of 6.1% and peaked up to 21.8%.

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Experimental investigation of the effects of photovoltaic panels on efficiency cooling with nanofluids using both in‐pipe flow and fin

Ziyadanogullari,

Ozdemir

2024

Energy Science & Engineering

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Temperature increases in photovoltaic (PV) panels are one of the primary issues preventing PV systems from being used extensively. When a photovoltaic module overheats, its output power performance drops by 0.4%–0.5% for every degree Celsius above its rated temperature. Lowering the operating temperature of the PV surface using a cooling medium is an efficient technique to increase electrical performance and decrease the rate of thermal degradation of a PV module. To prevent this performance loss, researchers have worked on cooling photovoltaic panels with fluids such as air, water, and nanofluids. In this study, the effects of cooling on photovoltaic panels with water and nanofluid were investigated. The experiment was carried out by fixing the pipe and fins to the back surface of the panel. Al2O3‐water and TiO2‐water nanofluids were used as working fluid due to their cost effectiveness. Nanofluids prepared in three different volumetric fractions (0.01%, 0.1%, and 1%), the current and voltage values obtained from the panels were recorded, and the panel efficiency was calculated. The experimental results showed that the cooling increased the panel voltage and decreased the current. The results indicated that using TiO2 nanofluid was more effective than Al2O3 nanofluid in terms of electrical efficiency. It was also found that the fluids prepared as 0.01% and 1% gave the most efficient results. It has been observed that it is possible to increase the panel efficiency by 8.32% by cooling the panel.

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Experimental investigation of the effect of multi-wall carbon nanotube – Water/glycol based nanofluids on a PVT system integrated with PCM-covered collector

Cited by 89 publications

References 47 publications

Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

Thermal analysis on Darcy‐Forchheimer swirling Casson hybrid nanofluid flow inside parallel plates in parabolic trough solar collector: An application to solar aircraft

Experimental investigation of the effects of photovoltaic panels on efficiency cooling with nanofluids using both in‐pipe flow and fin

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