Photo-thermal conversion characteristics of carbon black-ethylene glycol nanofluids for applications in direct absorption solar collectors

Hazra, S. K.; Ghosh, Sudipto; Nandi, T.K.

doi:10.1016/j.applthermaleng.2019.114402

Cited by 72 publications

(28 citation statements)

References 51 publications

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“…Thirdly, there is still a huge challenge facing the SCSG system, and that is how to make the device better and stronger during the development of the system's components. When these devices are in use, particularly when working in an environment with a water supply, they have a waterproof quality, thermal quality effect, salt effect, and most importantly, bacteria and bad weather protection [78,101]. This includes lakes, rivers, seawater, industrial polluted water and municipal sewage.…”

Section: Challenges and Prospects For A Solar-driven Evaporation Systemmentioning

confidence: 99%

Solar-thermal conversion and steam generation: a review

Shi

Wang

et al. 2020

Applied Thermal Engineering

116

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Highlights  Solar absorbed materials and their photo-thermal conversion mechanism are reviewed.  The evaluation principle of photo-thermal conversion process are investigated.  Different solar absorbed evaporation methods and system are summarized.  The prospects and challenges of photo-thermal conversion and steam generation are discussed Abstract: Recently, steam generation systems based on solar-thermal conversion have received much interest, and this may be due to the widespread use of solar energy and water sources such as oceans and lakes. The photo-thermal desalination system becomes attractive as it can convert absorbed solar light energy into thermal energy and realise the desalination and water purification of saline water through the evaporation process. In this paper, the research status of solar-thermal conversion materials such as metal-based materials, semiconductor materials, carbon-base materials, organic polymer materials, composite photo-thermal materials and their solar-thermal conversion mechanism in recent years are reviewed. The physical process and evaluation principle of solar-thermal conversion are both carefully introduced. The methods of optimising thermal management and increasing the evaporation rate of a hybrid system are also introduced in detail. Four main applications of solar-thermal conversion technologies (seawater desalination, wastewater purification, sterilisation and power generation) are discussed. Finally, based on the above analysis, the prospects and challenges for future research in the field of desalination are discussed from an engineering and scientific viewpoint to promote the direction of research, in order to stimulate future development and accelerate commercial application.

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Section: Challenges and Prospects For A Solar-driven Evaporation Systemmentioning

confidence: 99%

Solar-thermal conversion and steam generation: a review

Shi

Wang

et al. 2020

Applied Thermal Engineering

116

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“…The reason behind this was attributed to the enhanced convection heat transfer during the rotation of nanofluid. The effect of carbon on solar thermal conversion was studied by S. K. Hazra et al [46]. A maximum optical absorptivity of 87.33% with a penetration depth of 20mm was noted at 15 ppm of carbon black.…”

Section: Ammentioning

confidence: 99%

Optimisation of thermo-optical properties of SiO2/Ag–CuO nanofluid for direct absorption solar collectors

Joseph

Sreekumar

Kumar

et al. 2019

Journal of Molecular Liquids

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Augmenting thermal and optical properties of working fluids used in solar thermal conversion systems using hybrid nanomaterials is gaining prominence. In the present study photo-thermal analysis and thermal conductivity investigations were performed on SiO2/Ag-CuO binary water based nanofluid. The influence of particle concentration and surfactant concentration on thermo-optical properties were investigated using the design of experiment concept. Analysis of variance (ANOVA) was employed to study the significance of the process parameters on thermal conductivity and solar weighted absorption fraction of nanofluid. The statistical optimisation of the process parameters was done using the desirability function. The optimum combination of nanoparticles and surfactant that yield good thermal conductivity and solar absorption was found to be SiO2/Ag: 206.3 mg/litre, CuO: 864.7 mg/litre, and SDS (surfactant): 1996.2 mg/litre. The optimum mass fraction of constituents yielded a relative thermal conductivity of 1.234 and solar weighted absorption fraction of 82.82 %.

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“…Many researches reveal that the nanofluid within the PV/T system contributes to improving thermal physical properties [ 35 , 36 ], mass diffusivity [ 37 , 38 ] and radioactive heat transfer properties [ 39 , 40 ]. Meanwhile, nanofluid volume concentration has important influence on the PV/T system performance [ 35 , 41 , 42 ]. Nanofluid is regarded as either a homogenous mixture of base fluid (single phase) or a heterogeneous mixture (two phase) [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid

Cui

Zhu

Zoras

et al. 2021

Renewable and Sustainable Energy Reviews

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Solar photovoltaic/thermal technology has been widely utilized in building service area as it generates thermal and electrical energy simultaneously. In order to improve the photovoltaic/thermal system performance, nanofluids are employed as the thermal fluid owing to its high thermal conductivity. This paper summarizes the state-of-the-art of the photovoltaic/thermal systems with different loop-pipe configurations (including heat pipe, vacuum tube, roll-bond, heat exchanger, micro-channel, U-tube, triangular tube and heat mat) and nanoparticles (including Copper-oxide, Aluminium-oxide, Silicon carbide, Tribute, Magnesium-oxide, Cerium-oxide, Tungsten-oxide, Titanium-oxide, Zirconia-oxide, Graphene and Carbon). The influences of the critical parameters like nanoparticle optical and thermal properties, volume fraction, mass flux and mass flow rates, on the photovoltaic/thermal system performance are for the optimum energy efficiency. Furthermore, the structure and manufacturing of solar cells, micro-thermometry analysis of solar cells and recycling process of photovoltaic panels are explored. At the end, the standpoints, recommendations and potential future development on the solar photovoltaic/thermal system with various configurations and nanofluids are deliberated to overcome the barriers and challenges for the practical application. This study demonstrates that the advanced photovoltaic/thermal configuration could improve the system energy efficiency approximately 15%–30% in comparison with the conventional type whereas the nanofluid is able to boost the efficiency around 10%–20% compared to that with traditional working fluid.

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Photo-thermal conversion characteristics of carbon black-ethylene glycol nanofluids for applications in direct absorption solar collectors

Cited by 72 publications

References 51 publications

Solar-thermal conversion and steam generation: a review

Solar-thermal conversion and steam generation: a review

Optimisation of thermo-optical properties of SiO2/Ag–CuO nanofluid for direct absorption solar collectors

Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid

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