Comparative performance assessment of solar dish assisted s-CO2 Brayton cycle using nanofluids

Khan, Muhammad Sajid; Abid, Muhammad; Ali, Hafız Muhammad; Amber, Khuram Pervez; Bashir, Muhammad Anser; Javed, Samina

doi:10.1016/j.applthermaleng.2018.11.021

Cited by 129 publications

(38 citation statements)

References 52 publications

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“…Furthermore, nanofluids could be used for different engineering applications, for example, ZiO‐water is employed to develop the thermal performance of a car radiator . Besides, different nanofluids have been used in a solar dish with Brayton cycle for the enhancement of exergy and energy performances . More recent addition information about the applications of nanofluids could be found in the most recent review …”

Section: Introductionmentioning

confidence: 99%

“…20,21 Besides, different nanofluids have been used in a solar dish with Brayton cycle for the enhancement of exergy and energy performances. 22 More recent addition information about the applications of nanofluids could be found in the most recent review. [23][24][25][26] In the current study, the hydrothermal performance of miniature CHSs is numerically considered by ANSYS Fluent-CFD V14.5 using SiO 2 -water nanofluids.…”

Section: Introductionmentioning

confidence: 99%

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The hydraulic‐thermal performance of miniature compact heat sinks using SiO₂‐water nanofluids

Fadhil

Khalil

Al‐damook

2019

Heat Trans. Asian Res.

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Ever since the rapid increase in both the demand for the miniature electronic devices and their applications, heat dissipation in the electronic components has been a serious issue. A miniature plate‐pin heat sink model with square, circular, and elliptic pins is considered to enhance the hydrothermal performance of this kind of compact heat sink (CHS). Water and 3% of SiO2‐water nanofluids of volume fraction were used with different Reynolds number ranges (100‐1000). The findings show that the base temperature of heat sink reduces while the Nusselt number enhances by using nanofluids and increasing Reynolds number. The lowest value of the base temperature is nearly 25% for the square pins and circular pins CHSs compared with a plate–fin heat sink at 3% of nanofluids. Furthermore, the highest value of the Nusselt number is about 98% at 3% SiO2 for circular pin CHSs compared with the plate–fin heat sink. However, the pressure drop of CHSs is higher than that of plate–fin heat sink. Moreover, the most significant hydrothermal performance value is about 1.44 for water and around 1.51 for SiO2 as using the CHS with circular and elliptic pins depends on the Reynolds number. Thus, applying CHSs with nanofluids instead of the traditional heat sinks might produce a substantial enhancement in the hydrothermal performance of heat sinks.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The hydraulic‐thermal performance of miniature compact heat sinks using SiO₂‐water nanofluids

Fadhil

Khalil

Al‐damook

2019

Heat Trans. Asian Res.

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“…Conventional fluids for heat transfer, including water, ethylene glycol, and motor oil have very low thermal conductivity compared to metals and even metal oxides. For example, the thermal conductivity coefficient is 700 times the thermal conductivity coefficient of water and 3000 times the thermal conductivity coefficient of the motor oil and the thermal conductivity coefficient of aluminum oxide is 60 times the thermal conductivity coefficient of water 10‐14 . Therefore, fluids containing solid oxide or metal suspended solids are expected to exhibit better thermal properties than conventional fluids.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of exergetic performance of Al₂O₃ nanofluid in a double‐pipe heat exchanger fitted by a new modified twisted tape

Shirazi

2020

Heat Trans

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The use of nanofluids and surface enhancers today are among the new technologies used to increase heat transfer. In this study, heat transfer phenomena in heat exchanger were investigated using Al2O3 nanoparticles and modified spiral band as flow turbulator. Results are verified with well‐known correlations. The results show that the tube with cross‐hollow twisted tape inserts has the best exergetic performance for different hollow widths of the tape. Clearance, which is defined as the width between the tube and twisted tape, also affects the heat transfer performance. The smaller the clearance, the better is the exergetic performance. The tube can achieve the best exergetic performance when the number of unilateral twisted tapes is four. The results showed that increasing nanofluid concentration improves exergetic performance.

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“…From the results, it was found that by using aqua based nanofluids, the convective heat transfer was enhanced for a given Reynolds's number. Arshad and Ali [16,17] studied the effect of aqua-based TiO 2 nanofluid on a minichannel heat sink, the pressure drop and its heat transfer characteristics. It was found that with decrease in the heating power, the pressure drop was found to increase and this trend was much favorable in TiO 2 nanofluid in comparison with distilled water.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer augmentation in automobile radiator using Al2O3–water based nanofluid

et al. 2019

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In this work, the performance study of an automobile radiator using nanofluid in comparison with distilled water as coolant in the heat exchanger-based radiator is evaluated. The distilled water and nanofluid are flown through the radiator consisting of upright tubes with an elliptical-shaped cross section. Forced air is passed through the radiator perpendicular to the direction of fluid flow in tubes. The experiments are performed with three different volumetric concentrations of nanofluid (Al 2 O 3-water), with different flow rates, air flow velocities, and fluid inlet temperatures. The results obtained from this study demonstrate that an increase in fluid flow rate and air flow rate improves the heat transfer performance. It was found that an enhancement in heat transfer rate was found to be the maximum up to 44.29% at 0.2% volume fraction of alumina-distilled water-based nanofluid in comparison with distilled water. The effectiveness of radiator was found maximum up to 40.3% at 0.2% volume fraction of alumina-distilled water based nanofluid at 40 LPH.

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Comparative performance assessment of solar dish assisted s-CO2 Brayton cycle using nanofluids

Cited by 129 publications

References 52 publications

The hydraulic‐thermal performance of miniature compact heat sinks using SiO₂‐water nanofluids

The hydraulic‐thermal performance of miniature compact heat sinks using SiO₂‐water nanofluids

Experimental study of exergetic performance of Al₂O₃ nanofluid in a double‐pipe heat exchanger fitted by a new modified twisted tape

Heat transfer augmentation in automobile radiator using Al2O3–water based nanofluid

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Comparative performance assessment of solar dish assisted s-CO2 Brayton cycle using nanofluids

Cited by 129 publications

References 52 publications

The hydraulic‐thermal performance of miniature compact heat sinks using SiO2‐water nanofluids

The hydraulic‐thermal performance of miniature compact heat sinks using SiO2‐water nanofluids

Experimental study of exergetic performance of Al2O3 nanofluid in a double‐pipe heat exchanger fitted by a new modified twisted tape

Heat transfer augmentation in automobile radiator using Al2O3–water based nanofluid

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The hydraulic‐thermal performance of miniature compact heat sinks using SiO₂‐water nanofluids

The hydraulic‐thermal performance of miniature compact heat sinks using SiO₂‐water nanofluids

Experimental study of exergetic performance of Al₂O₃ nanofluid in a double‐pipe heat exchanger fitted by a new modified twisted tape