TiO2/water-based photovoltaic thermal (PVT) collector: Novel theoretical approach

Fudholi, Ahmad; Razali, Nur Farhana Mohd; Yazdi, M. H.; Ibrahim, Adnan; Ruslan, Mohd Hafidz; Othman, Masuri; Sopian, Kamaruzzaman

doi:10.1016/j.energy.2019.06.143

Cited by 67 publications

(17 citation statements)

References 35 publications

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“…This represented the highest observed enhancement in energy efficiency in their study. Fudholi et al [200], on the other hand, examined the use of TiO 2 water nanofluids on a PVT. The study concluded that at a mass concentration of 1%, the TiO 2 nanofluid recorded an 85-89% performance enhancement when compared to water with 60-76% at a mass flow rate of 0.0255 kg/s.…”

Section: Photovoltaic Thermal Collectors (Pvt)mentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

257

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The field of nanofluids has received interesting attention since the concept of dispersing nanoscaled particles into a fluid was first introduced in the later part of the twentieth century. This is evident from the increased number of studies related to nanofluids published annually. The increasing attention on nanofluids is primarily due to their enhanced thermophysical properties and their ability to be incorporated into a wide range of thermal applications ranging from enhancing the effectiveness of heat exchangers used in industries to solar energy harvesting for renewable energy production. Owing to the increasing number of studies relating to nanofluids, there is a need for a holistic review of the progress and steps taken in 2019 concerning their application in heat transfer devices. This review takes a retrospective look at the year 2019 by reviewing the progress made in the area of nanofluids preparation and the applications of nanofluids in various heat transfer devices such as solar collectors, heat exchangers, refrigeration systems, radiators, thermal storage systems and electronic cooling. This review aims to update readers on recent progress while also highlighting the challenges and future of nanofluids as the next-generation heat transfer fluids. Finally, a conclusion on the merits and demerits of nanofluids is presented along with recommendations for future studies that would mobilise the rapid commercialisation of nanofluids.

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Section: Photovoltaic Thermal Collectors (Pvt)mentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

257

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“…Some studies focus on the working fluid, which normally is either air (less efficient) or water [12]. But it can be changed to achieve better thermal efficiency using various nanofluids [7,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A Simulation Study on Temperature Uniformity of Photovoltaic Thermal Using Computational Fluid Dynamics

Rosli

Latif

Nawam

et al. 2021

ARFMTS

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The temperature distribution across the photovoltaic (PV) module in most cases is not uniform, leading to regions of hotspots. The cells in these regions perform less efficiently, leading to an overall lower PV module efficiency. They can also be permanently damaged due to high thermal stresses. To enable the high-efficiency operation and a longer lifetime of the PV module, the temperatures must not fluctuate wildly across the PV module. In this study, a custom absorber is designed based on literature to provide a more even temperature distribution across the PV module. This design is two standard sets of spiral absorbers connected. This design is relatively less complicated for this reason and it allows room for adjusting the pipe spacing without much complication. The absorber design is tested via computational fluid dynamics (CFD) simulation using ANSYS Fluent 19.2, and the simulation model is validated by an experimental study with the highest percentage error of 9.44%. The custom and the serpentine absorber utilized in the experiment are simulated under the same operating conditions having water as the working fluid. The custom absorber design is found to have a more uniform temperature distribution on more areas of the PV module as compared to the absorber design utilized in the experiment, which leads to a lower average surface temperature of the PV module. This results in an increase in thermal and electrical efficiency of the PV module by 3.21% and 0.65%, respectively.

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“…An indoor experimental work with multiwall carbon nanotube-water NFs was performed by R. Narsin et al (2018) [19] for PVT application and 87.65% of overall efficiency was recorded and numerically validated. The performance augmentation of PVT system with NFs cooling was endorsed by Ahmad Fudholi et al ( 2019) [20]. The TiO2-Water NFs with 0.5 wt% and 1 wt% at varying solar concentration was studied under uniform mass flow rate.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of CuO-based spiral flow photovoltaic sheet and tube thermal system

Deshmukh¹,

Satpute²,

Purwant³

et al. 2022

Therm sci

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The current work investigates experimental characteristics of the Photovoltaic Thermal system integrated with CuO-Water spiral flow heat exchanger and compared with non-cooled PV module. The work describes detailed procedure of Nanoparticles (NPs) preparation, SEM characterizations and heat extraction characteristics of Nanofluid (NFs) in PVT application. The heat exchanger was pasted at the back of polycrystalline PV module to form PVT system to examine cooling ability, power generation, thermal-electrical yield and overall efficiency at a different volume concentration of CuO NPs at steady mass flow rate of 0.08 kg/sec. From the experiments, it was concluded that the CuO-Water NFs assisted to lessen surface temperature of PV module by extracting heat that enhanced electrical efficiency by an average of 3.53%. It was also seen that electrical and thermal performance was improved at higher volume concentration and overall efficiency of 30.77% and 36.59 % were obtained at 0.01% and 0.03% of volume concentration.

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TiO2/water-based photovoltaic thermal (PVT) collector: Novel theoretical approach

Cited by 67 publications

References 35 publications

An updated review of nanofluids in various heat transfer devices

An updated review of nanofluids in various heat transfer devices

A Simulation Study on Temperature Uniformity of Photovoltaic Thermal Using Computational Fluid Dynamics

Comparative analysis of CuO-based spiral flow photovoltaic sheet and tube thermal system

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