Heat transfer enhancement in a parabolic trough solar receiver using longitudinal fins and nanofluids

Benabderrahmane, Amina; Aminallah, Miloud; Laouedj, Samir; Benazza, Abdelylah; Solano, J.P.

doi:10.1007/s11630-016-0878-3

Cited by 119 publications

(33 citation statements)

References 12 publications

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Section: Investigationsmentioning

confidence: 99%

“…Benabderrahmane et al [71,72] numerically modeled the effect of utilizing nanofluid as well as internal fins in the receiver of PTC using CFD. In Reference [72], it was concluded that combining both internal fins and nanofluid application can enhance the heat transfer behavior of the PTC greatly. To be specific, they utilized four different nanofluids (Al 2 O 3 /Dowtherm A, Cu/Dowtherm A, SiC/Dowtherm A, C/Dowtherm A) at different volumetric concentration of 1% and found that the metallic nanofluids (Cu/Dowtherm) had better thermal enhancement performance comparing with non-metallic ones (SiC/Dowtherm A, C/Dowtherm A, Al 2 O 3 /Dowtherm A,).…”

Section: Investigationsmentioning

confidence: 99%

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Application of Nanofluids in Thermal Performance Enhancement of Parabolic Trough Solar Collector: State-of-the-Art

et al. 2019

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The present review paper aims to document the latest developments on the applications of nanofluids as working fluid in parabolic trough collectors (PTCs). The influence of many factors such as nanoparticles and base fluid type as well as volume fraction and size of nanoparticles on the performance of PTCs has been investigated. The reviewed studies were mainly categorized into three different types of experimental, modeling (semi-analytical), and computational fluid dynamics (CFD). The main focus was to evaluate the effect of nanofluids on thermal efficiency, entropy generation, heat transfer coefficient enhancement, as well as pressure drop in PTCs. It was revealed that nanofluids not only enhance (in most of the cases) the thermal efficiency, convection heat transfer coefficient, and exergy efficiency of the system but also can decrease the entropy generation of the system. The only drawback in application of nanofluids in PTCs was found to be pressure drop increase that can be controlled by optimization in nanoparticles volume fraction and mass flow rate.

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Section: Investigationsmentioning

confidence: 99%

Section: Investigationsmentioning

confidence: 99%

Application of Nanofluids in Thermal Performance Enhancement of Parabolic Trough Solar Collector: State-of-the-Art

et al. 2019

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“…The third possible technology which may be employed to improve the thermal performance of PTC is to combine the previous two technologies, nanofluids and flow‐modifying inserts, in the same system. For example, Amina et al reported a 150% enhancement in heat transfer coefficient when using fins with nanofluids. In another study, the exergy enhancement achieved was approximately 16.51% when using twisted tape with Al 2 O 3 ‐thermal oil nanofluid (Okonkwo et al).…”

Section: Further Discussionmentioning

confidence: 99%

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

Abed

Afgan

2020

Int J Energy Res

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A wide range of engineering industrial applications require both the thermal and optical efficiencies of the system to be maximized with a reasonable low penalty for the friction factor and subsequently low losses in pressure. Among the family of concentrated solar power systems, parabolic trough collectors (PTCs), which have recently received significant attention, face similar challenges. The current work presents an extensive review of the PTC systems comparing recent and past technologies, which are widely being used to improve and enhance the thermal and optical efficiencies. Furthermore, the techniques used for single and two-phase flow modeling in numerical simulations, design variables, and experimental processes have been discussed in detail. The article also presents different numerical methods and analytical approaches of implementing the nonuniform solar distribution with different design parameters. Four main technologies are comprehensively addressed to effectively enhance the thermal performance of the PTCs; changing working heat transfer fluids, replacing the working fluids by nanofluids (single and hybrid) that have higher thermal-physical properties than those of base working fluids, inserting different tabulators with various design configurations, and finally combining the advantages of nanofluids and swirl generators in the same application. The article also critically summarizes the studies investigating the enhancement of thermal performance: use of novel design of PTCs and passive heat transfer enhancement techniques. Finally, a wide range of numerical and experimental studies are proposed for the future work related to the aforementioned main technologies. K E Y W O R D Sheat transfer enhancements, nanofluids, parabolic trough solar collectors, solar thermal energy, tabulators, thermal and optical performances

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“…A transient simulation model to assess the performance of water heating systems by utilizing parabolic trough solar collectors has been developed by Odeh et al 45 Also, the principle of operation and design for a novel trough solar concentrator has been provided by Tao et al 46 The effect of characteristic parameters and crucial design has been evaluated and optimized. Additionally, a three dimensional numerical examination of heat transfer in a parabolic trough receiver with longitudinal fins using different kinds of nanofluid has been provided by Amina et al 47 Additionally, Bellos et al 48 investigated the optimal locations and numbers of internal fins to increase the thermal efficiency of parabolic trough collectors. As indicated in the results, three fins in the lower part can be considered as the optimal approach.…”

Section: Expected Revenue Of Parabolic Concentratormentioning

confidence: 99%

Solar power technology for electricity generation: A critical review

Ahmadi

Ghazvini

Sadeghzadeh

et al. 2018

Energy Science & Engineering

304

111

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Negative environmental impact of fossil fuel consumption highlight the role of renewable energy sources and give them a unique opportunity to grow and improve. Among renewable energy sources solar energy attract more attention and many studies have focused on using solar energy for electricity generation. Here, in this study, solar energy technologies are reviewed to find out the best option for electricity generation. Using solar energy to generate electricity can be done either directly and indirectly. In the direct method, PV modules are utilized to convert solar irradiation into electricity. In the indirect method, thermal energy is harnessed employing concentrated solar power (CSP) plants such as Linear Fresnel collectors and parabolic trough collectors. In this paper, solar thermal technologies including soar trough collectors, linear Fresnel collectors, central tower systems, and solar parabolic dishes are comprehensively reviewed and barriers and opportunities are discussed. In addition, a comparison is made between solar thermal power plants and PV power generation plants. Based on published studies, PV‐based systems are more suitable for small‐scale power generation. They are also capable of generating more electricity in a specific area in comparison with CSP‐based systems. However, based on economic considerations, CSP plants are better in economic return.

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Heat transfer enhancement in a parabolic trough solar receiver using longitudinal fins and nanofluids

Cited by 119 publications

References 12 publications

Application of Nanofluids in Thermal Performance Enhancement of Parabolic Trough Solar Collector: State-of-the-Art

Application of Nanofluids in Thermal Performance Enhancement of Parabolic Trough Solar Collector: State-of-the-Art

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

Solar power technology for electricity generation: A critical review

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