Investigation of a nanofluid‐based photovoltaic thermal system using<scp>single‐wall</scp>carbon nanotubes: An experimental study

Kazem, Hussein A.; Chaichan, Miqdam T.; Al‐Waeli, Ali H.A.; Sopian, Kamaruzzaman

doi:10.1002/er.6515

Cited by 27 publications

(17 citation statements)

References 69 publications

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“…However, it does give some indication of the validity and accuracy of the results of the current study. For example, the results of 93 that used a nanofluid containing MWCNT were higher than the results of 48 study that used a nanofluid containing SWCNT, due to the difference in the type of heat exchanger employed, the coolant mass flow rate and the measurement conditions. The current study produced a high total efficiency that is close to the results of.…”

Section: Referencesmentioning

confidence: 74%

Design and experimental evaluation of a PV /T system cooled by advanced methods

Kazem

Chaichan

Sopian

2022

Intl J of Energy Research

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Photovoltaic thermal (PV/T) systems combine a hybrid photovoltaic (PV) module and a flat-plate solar thermal collector. The hybrid design allows for simultaneou increase in thermal energy while providing cooling for the PV module. In doing so, the PV module temperature drops, and therefore the electrical efficiency increases. Another benefit of PV/T collectors is that they allow for the usage of thermal, and PV module in the same area and so that saved space for the consumer. This study presents a numerical (CFD) design and experimental evaluation of a PV/T system cooled by nano-PCM and nanofluid. The selected nanomaterial and PCM were nano-silicon carbide (SiC) and paraffin, respectively. Nano-silicon carbide particles were employed with the paraffin to ameliorate its thermal conductivity. The study examined various aspects of the system such as the SiC particles' optimal mass fraction suspended in both water (base fluid) and paraffin, the optimum mass flow rate of nanofluid, voltage and current of the PV module, thermal energy of solar thermal collector, and the combined PV/T efficiency. The numerical and practical results were very close, which proves the validity of the hypotheses used in building the program. The significance of this study is demonstrated by the result as this design led to maximum thermal and electrical efficiencies of 72% and 13.7%, respectively. The proposed PV/T system introduced better stability of the generated power and thermal efficiency at peak time than the other two studied systems.

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Section: Referencesmentioning

confidence: 74%

Design and experimental evaluation of a PV /T system cooled by advanced methods

Kazem

Chaichan

Sopian

2022

Intl J of Energy Research

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“…Al-Waeli et al observed that both EG and PG can act as a lubricant for nanoparticles, thus allowing them to become redistributed if they settle and collect at the bottom of the tank when the liquid is recirculated. Generally, it can be advantageous to combine the trait with the higher thermal conductivity of water by mixing it with the liquids mentioned, such as refs , , , which has led to many investigations.…”

Section: Resultsmentioning

confidence: 99%

Optimizing MWCNT-Based Nanofluids for Photovoltaic/Thermal Cooling through Preparation Parameters

et al. 2023

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Multiwalled carbon nanotubes (MWCNTs) were employed as added particles for nanofluids in this practical investigation. To identify the most appropriate nanofluid for cooling PVT systems that are functional in the extreme summer environment of Baghdad, the parameters of base fluid, surfactant, and sonication time used for mixing were examined. Water was chosen as the base fluid instead of other potential candidates such as ethylene glycol (EG), propylene glycol (PG), and heat transfer oil (HTO). Thermal conductivity and stability were important thermophysical qualities that were impacted by the chosen parameters. The nanofluid tested in Baghdad city (consisting of 0.5% MWCNTs, water, and CTAB with a sonication period of three and a quarter hours) resulted in a 119.5, 308, and 210% enhancement of thermal conductivity (TC) for water compared with EG, PG, and oil, respectively. In addition, the nanofluid-cooled PVT system had an electrical efficiency that was 88.85% higher than standalone PV technology and 44% higher than water-cooled PVT systems. Moreover, the thermal efficiency of the nanofluid-cooled PVT system was 20% higher than the water-cooled PVT system. Finally, the nanofluid-cooled PVT system displayed the least decrease in electrical efficiency and a greater thermal efficiency even when the PV panel was at its hottest at noon.

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“…Nanofluids are a mixture of small-sized solid particles of less than 100 nm with base fluids (water, kerosene, oil, etc.) to produce a nanofluid with better heat transfer properties than the base fluid [2]. Recently, the use of nanofluids has occupied a wide range in heat transfer applications.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting nanofluids behaviour: A review

Alktranee

Bencs

2023

IRASE

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Nanotechnology applications have occupied a wide range in engineering applications and achieved distinctive performance due to their potential as a working fluid instead of conventional liquids due to their outstanding performance. Sustaining stable performance nanofluids for a longer time retaining their properties without clustering and nanoparticles aggregation in the base fluid represents a significant challenge that can influence nanofluid properties and thermal behaviour. This review highlights some important factors that influence the stability of nanofluids, such as the size, concentration ratio of nanoparticles, and the type of base fluid, in addition discussing the methods used to improve the stability of nanofluids, such as the effect of cluster formation of nanoparticles in the base fluid due to Brownian motion and the role of the surfactants in preventing or reducing the agglomeration of nanoparticles, zeta potential and pH in estimating nanofluids stability. The factors mentioned affect the thermophysical properties of nanoparticles in preparing nanofluids and enhance their performance. This review provides information which helps improve the wide range usability of nanofluids for preparing stable nanofluids with good thermophysical properties.

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Investigation of a nanofluid‐based photovoltaic thermal system usingsingle‐wallcarbon nanotubes: An experimental study

Cited by 27 publications

References 69 publications

Design and experimental evaluation of a PV /T system cooled by advanced methods

Design and experimental evaluation of a PV /T system cooled by advanced methods

Optimizing MWCNT-Based Nanofluids for Photovoltaic/Thermal Cooling through Preparation Parameters

Factors affecting nanofluids behaviour: A review

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