Effect of plasmonic nanoshell-based nanofluid on efficiency of direct solar thermal collector

Duan, Huiling; Tang, Liangliang; Zheng, Yuan; Xu, Chunxiao

doi:10.1016/j.applthermaleng.2018.01.042

Cited by 49 publications

(6 citation statements)

References 20 publications

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“…Direct absorption solar collectors show great potential for efficient conversion of sunlight to thermal energy. Applications of NPs and NFs in direct solar absorption collectors are investigated and reviewed [5,8,40,76,126,[131][132][133][134]. Part of these investigations was reviewed before.…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

“…Recent investigations investigated applicability of various NPs for direct absorption solar collectors, including alumina NF and ZnO-Au composite hierarchical particles dispersed in oil-based NFs [76,131]. The optimization problems of a direct absorption solar collector with blended plasmonic NFs and effect of plasmonic nanoshell-based NF on efficiency of direct solar thermal collector were discussed [132,133]. The use of various NPs in flat plate and direct absorption solar collectors leads to increasing their thermal efficiency up to 10-15% in comparison with their collectors without NPs [126][127][128][129][130][131][132][133][134].…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

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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: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

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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“…Furthermore, Ag‐NPs lack the stability for prolonged uses, whereas, Cu and Al are generally more prone to oxidation under ambient conditions. Thus, a lot of studies have been conducted and observed high PTE in VASC systems using Au‐NPs 14,50‐52 . Even though plasmonic nanoparticles showed better optical signatures, most of the nanoparticles are costly, toxic, and nonbiodegradable after use in these solar collectors 18 .…”

Section: Introductionmentioning

confidence: 99%

Real‐time thermal performance investigation of a thermal energy storage integrated direct absorption solar collector under tropical climate

Gupta,

Kumar,

Kukreja

et al. 2024

Energy Storage

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In the last two decades, metallic particles of nano sizes (~10−9 m) have been tested profoundly in volumetric absorption solar collectors (VASC) due to their excellent optical properties and broadband absorption in the entire solar spectrum. However, very limited studies are available for understanding the performance of integrated energy storage VASC systems using nanofluids. For the experimental work presented here, a hybrid nanofluid of gold nanoparticles in Azadirachta indica leaves extract has been synthesized by chemical route. The prepared hybrid nanofluid has shown good absorption in 400 to 700 nm wavelength range and hence achieved high photo‐thermal conversion efficiency for tested VASC system. Furthermore, commercially available paraffin wax is used as a phase change material (PCM) in thermal energy storage (TES) and further integrated with VASC to analyze the thermal performance of the system even after sunshine hours. The real‐time experiments were conducted using different working fluids, and at three mass flow rates, that is, 0.008 kg/s, 0.016 kg/s, and 0.033 kg/s, respectively, during mild winter days in the tropical climate of India. The study revealed a photo‐thermal efficiency enhancement of about 17.1% when hybrid heat transfer fluid was used in the VASC system with TES as compared to base fluid water but without TES. During the heating period, the maximum thermal gain of the hybrid nanofluid was observed to be about 15°C higher than the ambient temperature at mass flow rate of 0.033 kg/s. Thermal efficiency enhancement of about 23.8%, 24%, and 24.1% was observed with hybrid nanofluid compared to base fluid water at a mass flow rate of 0.008 kg/s, 0.016 kg/s, and 0.033 kg/s, respectively, when PCM was kept inside the tank. Furthermore, a maximum zero loss efficiency of 83.8% was estimated at an optimal mass flow rate of 0.033 kg/s for the TES‐integrated VASC system.

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“…The application of nanofluids in low‐temperature DASCs has been the focus of various experimental and theoretical/numerical studies . A comprehensive review of the subject is found in .…”

Section: Introductionmentioning

confidence: 99%

“…Using a transient one‐dimensional model, Duan et al evaluated the photo‐thermal efficiency of a DASC containing SiO 2 /Au nanofluids. They found that the collector efficiency is significantly increased using plasmonic nanoshell‐based nanofluid with an optimum collector depth of 10 mm.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of a direct absorption solar collector using copper oxide porous foam and nanofluid

Esmaeili

Karami

Delfani³

2020

Int J Energy Res

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The current research proposes the idea of using water-saturated metal oxide foams and water-based nanofluids as solar absorber in the direct absorption solar collectors (DASCs). Specifically, the novel solar collector design utilizes copper oxide (CuO) porous foam and nanoparticle with high optical properties and is expected to have enhanced thermal performance than the conventional collectors utilizing pure water. The finite volume technique is used to solve the governing equations of flow and heat transfer in the radiative participating media. Also, to establish the reliability and accuracy of numerical solutions, the obtained results are compared with the corresponding numerical and experimental data. The computations are carried out for different nanoparticle volume fractions, foam pore sizes, working fluid mass flow rates, and both porous layer thicknesses and positions (inserted at the lower or upper wall of the collector). It is found that the efficiency of DASC partially/fully filled with metal oxide foam is maximized when the collector is completely filled with it. Compared with the water flow, the numerical results show that the collector efficiency using CuO nanofluid and metal oxide foam is improved by up to 26.8% and 23.8%, respectively. Moreover, considering the second law of thermodynamics, the use of CuO nanofluids in the DASC seems to be more effective than the use of CuO porous foam. K E Y W O R D Sdirect absorption solar collector, efficiency, metal oxide foam, nanofluid, second law of thermodynamics

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Effect of plasmonic nanoshell-based nanofluid on efficiency of direct solar thermal collector

Cited by 49 publications

References 20 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

Real‐time thermal performance investigation of a thermal energy storage integrated direct absorption solar collector under tropical climate

Performance enhancement of a direct absorption solar collector using copper oxide porous foam and nanofluid

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