Performance evaluation of nanofluids in solar energy: a review of the recent literature

Bozorgan, Navid; Shafahi, Maryam

doi:10.1515/nano.s40486-015-0014-2

Cited by 8 publications

(6 citation statements)

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“…This study also highlighted the importance of using the appropriate fluid for a specific solid phase to gain the most desirable thermal conductivity enhancements. For further information regarding the performance of nanofluids and their application in solar energy systems, the authors would like to recommend the following three recent reviews by Bozorgan & Shafahi [ 160 ], Kasaeian et al [ 41 ] and Reddy et al [ 161 ].…”

Section: Types Of Nanofluidsmentioning

confidence: 99%

Nanofluid Types, Their Synthesis, Properties and Incorporation in Direct Solar Thermal Collectors: A Review

et al. 2017

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The global demand for energy is increasing and the detrimental consequences of rising greenhouse gas emissions, global warming and environmental degradation present major challenges. Solar energy offers a clean and viable renewable energy source with the potential to alleviate the detrimental consequences normally associated with fossil fuel-based energy generation. However, there are two inherent problems associated with conventional solar thermal energy conversion systems. The first involves low thermal conductivity values of heat transfer fluids, and the second involves the poor optical properties of many absorbers and their coating. Hence, there is an imperative need to improve both thermal and optical properties of current solar conversion systems. Direct solar thermal absorption collectors incorporating a nanofluid offers the opportunity to achieve significant improvements in both optical and thermal performance. Since nanofluids offer much greater heat absorbing and heat transfer properties compared to traditional working fluids. The review summarizes current research in this innovative field. It discusses direct solar absorber collectors and methods for improving their performance. This is followed by a discussion of the various types of nanofluids available and the synthesis techniques used to manufacture them. In closing, a brief discussion of nanofluid property modelling is also presented.

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Section: Types Of Nanofluidsmentioning

confidence: 99%

Nanofluid Types, Their Synthesis, Properties and Incorporation in Direct Solar Thermal Collectors: A Review

et al. 2017

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“…The shift in energy supply from traditional to renewable sources is necessary for climate change mitigation under progressive global warming conditions 3,4 . In this regard, solar energy applications play an important role in addressing environmental, social, and economic problems related to energy usage 5,6 …”

Section: Introductionmentioning

confidence: 99%

The role of nanofluids on enhancing the solar energy performance with focusing on the mining industry

Molaei

Siavoshi

2021

Intl J of Energy Research

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Solar energy systems are one of the most effective replacements for traditional fossil fuels because of their capability to turn solar energy directly into heat and electricity with no harmful environmental consequences such as CO 2 production and climate change. Despite the challenges and motivations, the implementation of solar energy is still slow in the mining industry. There are many opportunities to bring this new technology to mine sites. The most important objective of switching to renewable energies is increasing the efficiency of solar panels and decreasing the cost of energy production. Improving the thermal performance of solar energy systems by using nanofluids with superior thermophysical properties is a viable option. In this paper, the fundamental parameters, which improve the nanofluid properties and make the solar systems more cost-effective are reviewed.

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“…A main application of phase change materials can be found at concentrated solar power plants [10], where they are used together with heat transfer fluids for storing energy. A way for improving the thermal efficiency of these plants consists of adding nanoencapsulated phase change materials (nePCMs) to the heat transfer fluid or to the thermal storage fluid.…”

Section: Introductionmentioning

confidence: 99%

Finite element formulation to study thermal stresses in nanoencapsulated phase change materials for energy storage

Forner-Escrig

Palma

Mondragón

2020

Journal of Thermal Stresses

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Nanoencapsulated phase change materials (nePCMs)-which are composed of a core with a phase change material and of a shell that envelopes the core-are currently under research for heat storage applications. Mechanically, one problem encountered in the synthesis of nePCMs is the failure of the shell due to thermal stresses during heating/cooling cycles. Thus, a compromise between shell and core volumes must be found to guarantee both mechanical reliability and heat storage capacity. At present, this compromise is commonly achieved by trial and error experiments or by using simple analytical solutions. On this ground, the current work presents a thermodynamically consistent and three-dimensional finite element (FE) formulation considering both solid and liquid phases to study thermal stresses in nePCMs. Despite the fact that there are several phase change FE formulations in the literature, the main novelty of the present work is its monolithic coupling-no staggered approaches are required-between thermal and mechanical fields. Then, the FE formulation is implemented in a computational code and it is validated against onedimensional analytical solutions. Finally, the FE model is used to perform a thermal stress analysis for different nePCM geometries and materials to predict their mechanical failure by using the Rankine's criterion.

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Performance evaluation of nanofluids in solar energy: a review of the recent literature

Cited by 8 publications

References 0 publications

Nanofluid Types, Their Synthesis, Properties and Incorporation in Direct Solar Thermal Collectors: A Review

Nanofluid Types, Their Synthesis, Properties and Incorporation in Direct Solar Thermal Collectors: A Review

The role of nanofluids on enhancing the solar energy performance with focusing on the mining industry

Finite element formulation to study thermal stresses in nanoencapsulated phase change materials for energy storage

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