Solar assisted multi-generation system using nanofluids: A comparative analysis

Abid, Muhammad; Ratlamwala, Tahir Abdul Hussain; Atikol, Uğur

doi:10.1016/j.ijhydene.2017.05.178

Cited by 49 publications

(23 citation statements)

References 44 publications

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“…Both metallic and nonmetallic nanoparticles can be suspended into the base fluids with different volume fractions or different weight percentage. Even though some studies (such as Ferraro et al and Abid et al) did not observe significant improvement with nanofluids, the bulk of the available literature seems to indicate that nanofluids can indeed improve the thermal performance of PTC systems. The maximum enhancement reported to date in the heat transfer coefficient was approximately 234%, as described by Mwesigye et al that used MWCNT/therminol VP − 1 nanofluid.…”

Section: Further Discussionmentioning

confidence: 97%

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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Section: Further Discussionmentioning

confidence: 97%

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 comparative analysis of both the nanofluids is done to get the most optimum working fluid. The distinct feature of the present study in comparison with the previous studies is that this study is amongst the very few studies where nanoparticles are used in an integrated multigeneration system. Abid et al proposed a multigeneration system that used nanofluids to power up a regenerative reheat Rankine cycle only for the production of power and hydrogen.…”

Section: Introductionmentioning

confidence: 86%

“…The distinct feature of the present study in comparison with the previous studies is that this study is amongst the very few studies where nanoparticles are used in an integrated multigeneration system. Abid et al proposed a multigeneration system that used nanofluids to power up a regenerative reheat Rankine cycle only for the production of power and hydrogen. This study, on the other hand, used nanofluids as a working fluid for this multigeneration system flowing through PTC yielding better heat transfer properties than some inorganic and organic fluids, also integrated with a geothermal source for the production of multiple useful outputs (power production, hydrogen, fresh water, cooling, and space heating), and the thermodynamic comparison of two different nanofluids adds up to the novelty of this publication.…”

Section: Introductionmentioning

confidence: 86%

“…Certain input data and assumptions were required for the current study. Some of them are stated as follows: The surrounding pressure and temperature are supposed to be 101.325 kPa and 300 K, respectively Pressure losses in the piping and fitting are not considered …”

Section: Methodsmentioning

confidence: 99%

“…Otanicar et al noted a rise in the thermal capability of a specimen by using nanofluids as heat transfer fluid, and this was also observed by Tyagi et al who used nanofluids in direct absorption solar collector. Abid et al used nanofluids for a multigeneration system that was capable of producing hydrogen and concluded that the nanofluids yield 4.28% more hydrogen as compared with molten salts and thus prove to be better working fluid. Khalid et al developed an integrated system combining two renewable sources (solar and biomass) for the production of multiple outputs; exergy and energy analyses were also performed in the finding.…”

Section: Introductionmentioning

confidence: 99%

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Geothermal and solar energy–based multigeneration system for a district

et al. 2019

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Summary In this study, parabolic trough collector with an integrated source of geothermal water is used with regenerative Rankine cycle with an open feedwater heater, an electrolyzer, and an absorption cooling system. The absorption fluids used in the solar collectors were Al2O3‐ and Fe2O3‐based nanofluids. Detailed energetic and exergetic analyses are done for the whole system including all the components. A comparative analysis of both the used working fluids is done and plotted against their different results. The parameters that are varied to change the output of the system are ambient temperature, solar irradiance, the percentage of nanofluids, the mass flow rate of the geothermal well, the temperature gradient of the geothermal well that had an effect on the net power produced, and the outlet temperature of the solar collector overall energetic and exergetic efficiencies. Other useful outputs by this domestic integrated multigeneration system are the heating of domestic water, space heating (maintaining the temperature at 40°C‐50°C), and desalination of seawater (flash distillation). The hydrogen production rate for both the fluids diverges with each other, both producing average from 0.00490 to 0.0567 g/s.

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Effects of synthetic oil nanofluids and absorber geometries on the exergetic performance of the parabolic trough collector

2018

Self Cite

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Summary The parabolic trough collector is 1 of the most deployed solar concentrating collectors in the world. In this research, the commercially available LS‐2 collector has been modeled using the engineering equation solver. The developed model is validated using the experimental results of the Sandia National Laboratory, LS‐2 collector test. The study presents a comparison of the exergetic performance of 4 different absorber tube geometry configurations: conventional absorber tube, longitudinal finned tube, absorber tube with twisted tape insert, and converging‐diverging absorber tube. The system is analyzed to observe the nature of exergy losses and exergy destruction for the various design configurations with the use of Therminol VP‐1 and Al2O3‐Therminol VP‐1 nanofluids. The results show that the biggest cause of reduced useful work is because of the destructed exergy from the sun to the absorber. While the optical errors account for a higher percentage of exergy losses. The converging‐diverging absorber geometry produced the best exergetic enhancement of 0.65% with the use of Therminol VP‐1 and 0.73% with the use of Al2O3/Therminol VP‐1 nanofluid.

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Solar assisted multi-generation system using nanofluids: A comparative analysis

Cited by 49 publications

References 44 publications

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

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

Geothermal and solar energy–based multigeneration system for a district

Effects of synthetic oil nanofluids and absorber geometries on the exergetic performance of the parabolic trough collector

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