Performance analysis of an integrated solar-based power generation plant using nanofluids

Alashkar, Adnan; Gadalla, Mohamed

doi:10.1002/er.3976

Cited by 11 publications

(7 citation statements)

References 30 publications

(39 reference statements)

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“…The change in viscosity is intimately related to heat transfer enhancement of nanofluids in particular when buoyancy forces are present, as in the present study, as will be elaborated in due course. Thus viscosity variation as studied by the Reynolds model may provide a good insight into the improved efficiencies reported in solar energy systems doped with nanofluids at higher temperatures as noted by Cingarapu et al [17], Alashkar and Gadalla [20].…”

Section: Pumping Characteristicsmentioning

confidence: 83%

“…eqns. (19), (20) and 21 (48) Here denotes fourth-order Runge-Kutta phase and is the fifth-order Runge-Kutta phase. An estimate of the error is achieved by subtracting the two values obtained.…”

Section: Validation With Maple17mentioning

confidence: 99%

“…Cingarapu et al [17] (on tin-based nanofluids for solar pumping designs), Ravindran [18] (on nano-fuels for rocket propulsion and solar power), Abid et al [19] (on salt-based ionic nanofluids for parabolic collectors) and Alashkar and Gadalla [20] (focused on gold and zinc oxide nanofluids for solar power pumps). All these studies confirmed the considerable elevation in thermal efficiency and sustainability of solar power designs attained with judicious deployment of metallic nano-particles.…”

Section: Introductionmentioning

confidence: 99%

“…Solving the Eqns (19)(20). subject to boundary condition(26), the temperature and nanoparticle fraction field are obtained as:…”

mentioning

confidence: 99%

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Peristaltic pumping of magnetic nanofluids with thermal radiation and temperature-dependent viscosity effects: Modelling a solar magneto-biomimetic nanopump

et al. 2019

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Nanofluids have shown significant promise in the thermal enhancement of many industrial systems. They have been developed extensively in energy applications in recent years. Solar energy systems are one of the most promising renewables available to humanity and these are increasingly being redesigned to benefit from nanofluids. Most designs of solar collectors involve fixed (rigid) geometries which may be cylindrical, parabolic, tubular or flat-plate types. Modern developments in biomimetics have identified that deformable conduit structures may be beneficial for sustainable energy systems. Motivated by these aspects, in the current work we present a novel model for simulating a biomimetic peristaltic solar magnetohydrodynamic nanofluid-based pump. The working fluid is a magnetized nanofluid which comprises a base fluid containing suspended magnetic nano-particles. The novelty of the present work is the amalgamation of biomimetics (peristaltic propulsion), magnetohydrodynamics and nanofluid dynamics to produce a hybrid solar pump system model. Heat is transferred via distensibility of the conduit in the form of peristaltic thermal waves and buoyancy effects. An externally applied magnetic field achieves the necessary circuit design for generating Lorentzian magnetic body force in the fluid. A variable viscosity modification of the Buongiorno nanofluid model is employed which features thermophoretic body force and Brownian dynamic effects. To simulate solar loading conditions a thermal radiative flux model is also deployed. An asymmetric porous channel is investigated with multiple amplitudes and phases for the wall wavy motion. The channel also contains a homogenous, isotropic porous medium which is simulated with a modified Darcy model. Heat generation/absorption effects are also examined. The electrically-conducting nature of the nanofluid invokes magnetohydrodynamic effects. The moving boundary value problem is normalized and linearized using the lubrication approach. Analytical solutions are derived for axial velocity, temperature and nanoparticle volume fraction. Validation is conducted with Maple numerical quadrature. Furthermore, the salient features of pumping and trapping phenomena discourse briefly. The observations demonstrate promising features of the solar magnetohydrodynamic peristaltic nanofluid pump which may also be exploited in spacecraft applications, biological smart drug delivery etc.

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Section: Pumping Characteristicsmentioning

confidence: 83%

Section: Validation With Maple17mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Solving the Eqns (19)(20). subject to boundary condition(26), the temperature and nanoparticle fraction field are obtained as:…”

mentioning

confidence: 99%

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Peristaltic pumping of magnetic nanofluids with thermal radiation and temperature-dependent viscosity effects: Modelling a solar magneto-biomimetic nanopump

et al. 2019

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“…They found that toluene with CuO nanoparticles was the optimal combination. Alashkar and Gadalla [13] tested nanofluids including Syltherm 800 and Therminol VP-1 with Cu and Ag in a parabolic trough solar collector to run the Rankine Cycle. Their findings show that the annual energy production rose by 11.7%.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of a solar trigeneration system based on parabolic trough collectors using graphene and ferrofluid nanoparticles

Ibrahim

Kayfeci

2021

THERM SCI

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In this comparative study, the thermodynamic analysis of a trigeneration system driven by a parabolic trough solar collector based on two different types of nanofluid is performed. A standard trigeneration system consists of two subsystems, including an absorption heat pump and the organic Rankine cycle. Two types of nanoparticles (graphene and ferrofluid) that possess excellent and diverse physical properties within a base fluid (Syltherm 800) were selected to be the absorption fluids in the solar cycle. Four organic fluids, namely R123, R401a, R601, and R601a, for the organic Rankine cycle are examined. The results clearly depicted improvement in the system performance. It was found that graphene nanoparticles performed better as compared to the ferrofluid nanoparticles. The largest temperature of the collector outlet was obtained at 257.4? with Syltherm 800/graphene. The highest net power produced by the system was 134.1 kW and the maximum overall energy and exergy efficiencies of the system were 160.5% and 21.84%, respectively. The highest net power produced by the system was 134.1 kW and the maximum overall energy and exergy efficiencies of the system were 160.5% and 21.84%, respectively. The solar collectors are the main source of the exergy destruction and the highest value was recorded about 683kW.

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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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Performance analysis of an integrated solar-based power generation plant using nanofluids

Cited by 11 publications

References 30 publications

Peristaltic pumping of magnetic nanofluids with thermal radiation and temperature-dependent viscosity effects: Modelling a solar magneto-biomimetic nanopump

Peristaltic pumping of magnetic nanofluids with thermal radiation and temperature-dependent viscosity effects: Modelling a solar magneto-biomimetic nanopump

Comparative analysis of a solar trigeneration system based on parabolic trough collectors using graphene and ferrofluid nanoparticles

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

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