Influence of the geometrical parameters and particle concentration levels of hybrid nanofluid on the thermal performance of axial grooved heat pipe

Pandya, Naimish S.; Desai, Akshaykumar N.; Tiwari, Arun Kumar; Said, Zafar

doi:10.1016/j.tsep.2020.100762

Cited by 36 publications

(13 citation statements)

References 45 publications

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“…They found that applying the hybrid nanofluids caused better enhancement in the performance compared with the mono nanofluids. Pandya et al [22] charged an axial grooved heat pipe with a hybrid nanofluid composed of CeO 2 -MWCNT and observed that using this working fluid led to 30% lower thermal resistance compared with the case of using water as the working fluid. Aside from the abovementioned applications, using hybrid nanofluids in other types of thermal mediums, such as pulsating heat pipes, could result in the improvement of performance [23].…”

Section: Introductionmentioning

confidence: 99%

Thermophysical Properties of Hybrid Nanofluids and the Proposed Models: An Updated Comprehensive Study

et al. 2021

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Thermal performance of energy conversion systems is one of the most important goals to improve the system’s efficiency. Such thermal performance is strongly dependent on the thermophysical features of the applied fluids used in energy conversion systems. Thermal conductivity, specific heat in addition to dynamic viscosity are the properties that dramatically affect heat transfer characteristics. These features of hybrid nanofluids, as promising heat transfer fluids, are influenced by different constituents, including volume fraction, size of solid parts and temperature. In this article, the mentioned features of the nanofluids with hybrid nanostructures and the proposed models for these properties are reviewed. It is concluded that the increase in the volume fraction of solids causes improvement in thermal conductivity and dynamic viscosity, while the trend of variations in the specific heat depends on the base fluid. In addition, the increase in temperature increases the thermal conductivity while it decreases the dynamic viscosity. Moreover, as stated by the reviewed works, different approaches have applicability for modeling these properties with high accuracy, while intelligent algorithms, including artificial neural networks, are able to reach a higher precision compared with the correlations. In addition to the used method, some other factors, such as the model architecture, influence the reliability and exactness of the proposed models.

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Section: Introductionmentioning

confidence: 99%

Thermophysical Properties of Hybrid Nanofluids and the Proposed Models: An Updated Comprehensive Study

et al. 2021

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“…As the type of working fluid used affects the thermal efficiency of solar collectors, different types of working fluids, especially nanofluids, have been explored by researchers in recent times. [1][2][3][4][5][6][7][8] Higher thermal efficiency is reported in the literature for solar collectors using nanofluids as compared to their base fluids.…”

Section: Introductionmentioning

confidence: 99%

“…Solar collectors convert the incident solar radiation into heat and then transfer the same to a working fluid flowing through an array of tubes or channels (Figure 1). As the type of working fluid used affects the thermal efficiency of solar collectors, different types of working fluids, especially nanofluids, have been explored by researchers in recent times 1–8 . Higher thermal efficiency is reported in the literature for solar collectors using nanofluids as compared to their base fluids.…”

Section: Introductionmentioning

confidence: 99%

Effect of magnetic field on the thermal performance of a ferrofluid‐based solar flat plate collector

et al. 2022

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In this paper, the effectiveness of ferrofluid as a working fluid for solar flat plate collectors (FPCs) is studied. A mini‐ferrofluid‐based solar FPC is designed and tested under laboratory conditions. The thermal performance of the designed solar FPC is evaluated under different conditions and it is observed that it provides higher efficiency for the case of ferrofluid in the presence of a magnetic field. The thermal efficiency is observed to increase by 54% for ferrofluid in presence of a magnetic field as compared to no magnetic field. The thermal efficiency is observed to increase further with the increase in the magnetic field. The increase in thermal efficiency is attributed to the combined effects of higher thermal conductivity and magnetohydrodynamics of ferrofluid, which result in higher convective heat transfer from the riser tube walls into ferrofluid. The higher heat transfer for ferrofluid with a magnetic field is established by calculating the Nusselt number numerically using COMSOL. Simulation results show an increase in Nusselt number for ferrofluid with magnetic field and hence higher thermal efficiency for the solar FPC. The designed FPC provides simple modifications to conventional FPCs to use ferrofluid with magnetic field for higher thermal efficiencies.

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“…Waini et al [15] examined steady fully developed mixed convection flow of a lengthwise an upright surface, fixed in a porous medium with hybrid nanoparticles was examined. Pandya et al's [16] study focuses on the numerical model, developed to maximize the thermal performance of axial lined heat tube, working on CeO 2 + MWCNT/water-based hybrid nano-liquid. Babazadeh et al [17] investigated the hybrid nano-liquid of a free convection transport inside a permeable average in the appearance of an outside applied magnetics force, modeling it through control volume, creating a fixed element technique.…”

Section: Introductionmentioning

confidence: 99%

Advancement of Non-Newtonian Fluid with Hybrid Nanoparticles in a Convective Channel and Prabhakar’s Fractional Derivative—Analytical Solution

et al. 2021

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The present paper deals with the advancement of non-Newtonian fluid containing some nanoparticles between two parallel plates. A novel fractional operator is used to model memory effects, and analytical solutions are obtained for temperature and velocity fields by the method of Laplace transform. Moreover, a parametric study is elaborated to show the impact of flow parameters and presented in graphical form. As a result, dual solutions are predicted for increasing values of fractional parameters for short and long times. Furthermore, by increasing nanoparticle concentration, the temperature can be raised along with decreasing velocity. A fractional approach can provide new insight for the analytical solutions which makes the interpretation of the results easier and enable the way of testing possible approximate solutions.

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Influence of the geometrical parameters and particle concentration levels of hybrid nanofluid on the thermal performance of axial grooved heat pipe

Cited by 36 publications

References 45 publications

Thermophysical Properties of Hybrid Nanofluids and the Proposed Models: An Updated Comprehensive Study

Thermophysical Properties of Hybrid Nanofluids and the Proposed Models: An Updated Comprehensive Study

Effect of magnetic field on the thermal performance of a ferrofluid‐based solar flat plate collector

Advancement of Non-Newtonian Fluid with Hybrid Nanoparticles in a Convective Channel and Prabhakar’s Fractional Derivative—Analytical Solution

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