Investigation of CoSO4-based Ag nanofluids as spectral beam splitters for hybrid PV/T applications

Han, Xinyue; Chen, Xiaobin; Wang, Qian; Alelyani, Sami M.; Qu, Jian

doi:10.1016/j.solener.2018.11.037

Cited by 107 publications

(51 citation statements)

References 27 publications

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“…The optical transmittance of the working fluids is the most important measured parameter of the PLDS filters as it directly controls the thermal and the electrical behaviour of the PVT system in the model outlined in Section 2.4 [ 31 ]. The optical transmittance spectra were recorded over the 250–2000 nm spectral range using a Perkin Elmer Lambda 900 U v / v IS/NIR spectrometer (Perkin Elmer Inc. Massachusetts, USA) and having air as a reference [ 31 ]. The experimental spectra were acquired under ambient conditions using highly transparent 2 mm path-length quartz cuvettes.…”

Section: Methodsmentioning

confidence: 99%

“…The ability to control the optical and thermophysical properties of these nanofluids can be improved by the modification in the particle shape, size, and size-distribution of the NPs dispersed within the base fluid. Such approaches demonstrated considerable enhancements in the collective efficiency of the liquid optical filters when implemented in SBS-PVT [ 13 , 21 , 23 , 26 , 31 ] or, separately, in PT systems [ 30 , 32 , 33 , 34 ]. For example, in SBS-PVT systems the implementation of Ag/TiO 2 and Ag-SiO 2 nanoparticles has enabled combined conversion efficiencies of ~83% and ~55% to be achieved, respectively [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…In this scenario the new working fluids could simultaneously enhance the spectral selectivity of the base fluid and its heat-transfer capabilities, whilst also exhibiting a controllable fluorescence emission in the optimal spectral conversion window of the PV element [ 46 ]. Consequently, when employed in the PVT systems, the LDS working fluids can potentially minimize the loss of electrical energy that often occurs through the inclusion of the thermal component in the classical hybridisation process [ 27 , 31 ]. However, rather than competing, the two distinct strategies (LDS and nanofluids) can be consolidated into a single working fluid in which the presence of the nanoparticles not only enhances the thermal contributions, but also promotes the intensity of the fluorescence in the down-shifting species [ 47 ].…”

Section: Introductionmentioning

confidence: 99%

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Nanofluid Development Using Silver Nanoparticles and Organic-Luminescent Molecules for Solar-Thermal and Hybrid Photovoltaic-Thermal Applications

et al. 2020

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Exploiting solar energy using photo-thermal (PT) and/or hybridised photovoltaic/thermal (PVT) systems can represent a viable alternative to the growing demand for renewable energy. For large-scale implementation, such systems require thermal fluids able to enhance the combined conversion efficiency achievable by controlling the ‘thermal’ and ‘electrical’ components of the solar spectrum. Nanofluids are typically employed for these purposes and they should exhibit high heat-transfer capabilities and optical properties tuned towards the peak performance spectral window of the photovoltaic (PV) component. In this work, novel nanofluids, composed of highly luminescent organic molecules and Ag nanoparticles dispersed within a base fluid, were tested for PT and PVT applications. These nanofluids were designed to mimic the behaviour of luminescent down-shifting molecules while offering enhanced thermo-physical characteristics over the host base fluid. The nanofluids’ conversion efficiency was evaluated under a standard AM1.5G weighted solar spectrum. The results revealed that the Ag nanoparticles’ inclusion in the composite fluid has the potential to improve the total solar energy conversion. The nanoparticles’ presence minimizes the losses in the electrical power component of the PVT systems as the thermal conversion increases. The enhanced performances recorded suggest that these nanofluids could represent suitable candidates for solar energy conversion applications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanofluid Development Using Silver Nanoparticles and Organic-Luminescent Molecules for Solar-Thermal and Hybrid Photovoltaic-Thermal Applications

et al. 2020

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“…Then, a merit function ( MF ) is defined to describe the total output of the CPV/T system with the combined filter to an unfiltered solar cell:

italicMF = \frac{w \cdot P_{normala, el} + P_{normala, th}}{w \cdot P_{normala, el, unfiltered}}

where w is the worth factor derived from the relative value of electricity and thermal energy. It is assumed to be three due to three units of thermal energy can be converted into one unit of electricity in the typical thermal power plants …”

Section: Evaluation Of Volumetric Absorption Combined Spectral Beam Smentioning

confidence: 99%

“…It is assumed to be three due to three units of thermal energy can be converted into one unit of electricity in the typical thermal power plants. 26 Based on Equations (1-4), the merit function (MF) of the CPV/T system with the combined filter for silicon CPV cell is shown in Figure 3. Figure 3 also includes the results of the systems with only the fluid filter.…”

Section: Performance Analysis Of the Volumetric Absorption Combinedmentioning

confidence: 99%

Design and analysis of a CPV/T solar receiver with volumetric absorption combined spectral splitter

et al. 2020

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Summary Spectral beam splitting is a promising technology to achieve the maximum electrical and thermal outputs from concentrating photovoltaic/thermal (CPV/T) systems simultaneously. In this article, a novel CPV/T receiver is proposed by incorporating a fluid based filter together with a solid absorptive filter. The geometry of the receiver is developed for a designed linear flat mirror concentrator. According to the optical transmittance of both fluid based filters and solid absorptive filters, as well as their corresponding merit functions, four fluid filters and two solid filters are determined to be the candidates of the combined filter for the silicon concentrator solar cell. Then, a complete solar radiation propagation process from concentrator to the designed CPV/T receiver is simulated using ray tracing software‐LightTools. The results show that the surface illumination uniformity of the PV module filtered by each combined filter under the linear flat mirror concentrator is higher than 96%. Using 5 g/L CoSO4 solution and HB650 as the combined filter, 33.67% of the concentrated light can be directed to the PV module with the remainder collected by the filter as thermal energy and the silicon CPV cells can convert 27.06% of this energy into electrical power. This contributes to the fact that 92.43% of the light striking the PV module is within 650‐1100 nm, which is the spectral response range of the cell can work efficiently. The total efficiency of 49.88% can be achieved with such a filter and the electrical efficiency is 9.1% with respect to the total incident power on the receiver.

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Nanotechnology in Solar Lighting

Shen

Ruan

Lv³

2023

Nanotechnology Applications for Solar Energy Systems

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Investigation of CoSO4-based Ag nanofluids as spectral beam splitters for hybrid PV/T applications

Cited by 107 publications

References 27 publications

Nanofluid Development Using Silver Nanoparticles and Organic-Luminescent Molecules for Solar-Thermal and Hybrid Photovoltaic-Thermal Applications

Nanofluid Development Using Silver Nanoparticles and Organic-Luminescent Molecules for Solar-Thermal and Hybrid Photovoltaic-Thermal Applications

Design and analysis of a CPV/T solar receiver with volumetric absorption combined spectral splitter

Nanotechnology in Solar Lighting

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