Optical properties of various nanofluids used in solar collector: A review

Ahmad, S.H.A.; Saidur, R.; Mahbubul, I.M.; Al‐Sulaiman, Fahad A.

doi:10.1016/j.rser.2017.01.173

Cited by 102 publications

(31 citation statements)

References 52 publications

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“…Publications on optical properties of homogeneous metallic and core-shell systems NPs and NFs [46,56,62,[71][72][73][74][75][84][85][86][87][88][89][90][91] have been reviewed in this part. The optical properties of NFs in near-UV, VIS and IR radiation intervals are determined by the total action of optical properties of water (fluid) and NPs system.…”

Section: Optical Properties Of Selected Nanoparticle Systems and Nanomentioning

confidence: 99%

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Pustovalov

2019

SN Appl. Sci.

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This review presents a comprehensive analysis of the recent studies and advances related to optical properties of nanoparticles, their heating under solar irradiation and heat conversion, relevant equations and theoretical modeling approaches and application of nanofluids for direct absorption of solar radiation. A lot of papers including theoretical, numerical and experimental up-to-date works are reviewed and summarized carefully to give a panoramic overview of the role of the nanoparticles. Modern nanotechnology can produce various homogeneous and hybrid (core-shell) nanoparticles from different metals and materials which have unique optical and thermal properties. It was found that the application of nanoparticles selected on the basis of the presented analysis has shown remarkable properties and offers unique advantages over conventional fluids in optical absorption, thermo-physical and heating properties of nanofluids. This fact can play a crucial role in increasing the efficiency of solar energy harvesting.

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Section: Optical Properties Of Selected Nanoparticle Systems and Nanomentioning

confidence: 99%

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Pustovalov

2019

SN Appl. Sci.

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“…Significant enhancement in thermal conductivity could not be achieved due to the surface functionalization of carbon black particles and nanofluid exhibited surface thinning behavior. Ahmad et al [14] reviewed the optical properties of various nanofluids (metals, metal oxides, carbon etc.) used in solar collector.…”

Section: Carbon-based Nanofluids In Solar Thermal Systemsmentioning

confidence: 99%

Carbon-based Nanofluid Applications in Solar Thermal Energy

2019

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Renewable energy sources such as solar, wind and geothermal are proposed as an alternative to fossil fuels whose excessive use causes global warming. The most popular one of the renewable energy sources is considered as solar energy due to the fact that required energy is provided by the sun entire year around the world. Solar energy systems convert the solar radiation to the useful heat or electricity. In order to achieve better performance in solar thermal systems many studies have been conducted. Some of these studies suggest that heat transfer fluid could be changed with the nanofluids which can be defined as new generation heat transfer fluid. Nanofluids are suspensions of nano-sized particles such as metals, metal-oxides, and Carbon-allotropes (C), in the conventional base-fluids (water, ethylene glycol and oil). Using nanofluid enhances the efficiency and thermal performance of solar systems due to their better thermophysical and optical properties. Recently, C-based nanofluids are getting attention due to their enhanced thermal conductivity and absorptivity at even low concentrations. The results show that C-based nanofluids have a potential to use in solar energy systems: solar collectors, solar stills, photovoltaic/thermal systems.

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“…Photovoltaic panels use solar irradiations and produce electricity. Moreover, during this electricity production process, a considerable amount of waste heat is also generated which can be taken its benefit by integrating a network of tubes which containing a fluid for heat transfer process (Ahmad, Saidur, Mahbubul, & Al-Sulaiman, 2017;Kumar, Prakash, & Kaviti, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of electrical efficiency of photovoltaic thermal solar collector

Ahmadi

Baghban

Sadeghzadeh

et al. 2020

Engineering Applications of Computational Fluid Mechanics

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Solar energy is a renewable resource of energy that is broadly utilized and has the least emissions among the renewable energies. In this study, machine learning methods of artificial neural networks (ANNs), least squares support vector machines (LSSVM), and neuro-fuzzy are used for advancing prediction models for thermal performance of a photovoltaic-thermal solar collector (PV/T). In the proposed models, the inlet temperature, flow rate, heat, solar radiation, and the sun heat have been considered as the inputs variables. Data set has been extracted through experimental measurements from a novel solar collector system. Different analyses are performed to examine the credibility of the introduced approaches and evaluate their performance. The proposed LSSVM model outperformed ANFIS and ANNs models. LSSVM model is reported suitable when the laboratory measurements are costly and time-consuming, or achieving such values requires sophisticated interpretations. Keywords: Renewable energy; neural networks (NNs); adaptive neuro-fuzzy inference system (ANFIS); least square support vector machine (LSSVM); photovoltaic-thermal (PV/T); hybrid machine learning model

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Optical properties of various nanofluids used in solar collector: A review

Cited by 102 publications

References 52 publications

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Carbon-based Nanofluid Applications in Solar Thermal Energy

Evaluation of electrical efficiency of photovoltaic thermal solar collector

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