Heat Transfer and Hydrodynamic Properties Using Different Metal-Oxide Nanostructures in Horizontal Concentric Annular Tube: An Optimization Study

Alawi, Omer A.; Abdelrazek, Ali H.; Aldlemy, Mohammed Suleman; Ahmed, Waqar; Hussein, Omar A.; Ghafel, Sukaina Tuama; Khedher, Khaled Mohamed; Scholz, Miklas; Yaseen‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬, Zaher Mundher

doi:10.3390/nano11081979

Cited by 10 publications

(3 citation statements)

References 51 publications

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“…The circular shaped heat exchanger has heated by an external heater wrapped around it, which is directly connected to the main voltage regulator. Pressure DP and chiller are used to see the pressure drop loss and to keep the constant temperature of the fluid while it is being running inside of the pipe [20,21].…”

Section: Methodsmentioning

confidence: 99%

Experimental Study on Heat Transfer Improvement in a Circular Passage Using Metal Oxide and Ethylene Glycol Based Well Stable Nanofluids

Ahmed

Sidik

Asako

2022

ARFMTS

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Zinc Oxide @ Glycol based nanofluids was prepared using the ultra-sonochemical technique and 2 step methods. The heat convection characteristics of as prepared nanofluids were observed for a closed single conduit in turbulent flow regimes. The prepared nanofluids were characterized for UV-vis, FTIR, XRD, FESEM, and TEM analysis to confirm the accurate synthesis of ZnO nanoparticles. Analytical data related to heat transfer properties of the synthesized nanofluids for the heat exchanger, incorporated with the conduit test section were collected. The addition of ZnO solid nanoparticles in the Ethylene Glycol enhanced the value of thermal conductivity and other thermo physical characteristics of the nanofluids. Supreme thermal conductivity was recorded at 45°C for using 0.1 wt.% of Zinc Oxide @ Glycol based nanofluids. Adding more wt.% of the ZnO solid nanoparticles in the Ethylene Glycol increased the thermal conductivity subsequently with variations in temperature from 20 to 45ºC. Furthermore, Nusselt numbers of Zinc Oxide @ Glycol based nanofluids were calculated at different wt.% of ZnO present in Ethylene Glycol base fluid. The occurrence of ZnO nanoparticles into the Ethylene Glycol base fluid intensify the Nusselt (Nu) number by 51.5%, 43.79%, 38%and 24.06% for 0.1 wt.%, 0.075 wt.%, 0.05 wt.% and 0.025wt.% concentrations, respectively. Varying wt.% of ZnO (0.1 wt.%, 0.075 wt.%, 0.05 wt.%). The absolute average heat transfer of Zinc Oxide @ Glycol based nanofluids using at the highest concentration of 0.1 wt.% was enhanced compared to the Ethylene Glycol base fluid. The magnitude of absolute average heat transfer was increased from 600 W/m2k for the EG@DW mixture to 1292 W/m2k for Zinc Oxide @ Glycol based nanofluids. Correspondingly, the heat transfer development at the other three (0.075 wt.%, 0.05 wt.%, and 0.025 wt.%) was observed as 600–1167, 600–1010 and 600–970 W/m2k, respectively, which is superior to pure Ethylene Glycol base fluid.

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Section: Methodsmentioning

confidence: 99%

Experimental Study on Heat Transfer Improvement in a Circular Passage Using Metal Oxide and Ethylene Glycol Based Well Stable Nanofluids

Ahmed

Sidik

Asako

2022

ARFMTS

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“…The thermophysical characteristics of gold blood nanofluid are given in Table 1 , and are expressed via equations as follow [ 41 , 46 , 47 ]:

…”

Section: Mathematical Modelmentioning

confidence: 99%

Simulation of Gold Nanoparticle Transport during MHD Electroosmotic Flow in a Peristaltic Micro-Channel for Biomedical Treatment

Nuwairan

Souayeh

2022

Micromachines

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The study of gold nanoparticles (AuNPs) in the blood flow has emerged as an area of interest for numerous researchers, due to its many biomedical applications, such as cancer radiotherapy, DNA and antigens, drug and gene delivery, in vitro evaluation, optical bioimaging, radio sensitization and laser phototherapy of cancer cells and tumors. Gold nanoparticles can be amalgamated in various shapes and sizes. Due to this reason, gold nanoparticles can be diffused efficiently, target the diseased cells and destroy them. The current work studies the effect of gold nanoparticles of different shapes on the electro-magneto-hydrodynamic (EMHD) peristaltic propulsion of blood in a micro-channel under various effects, such as activation energy, bioconvection, radiation and gyrotactic microorganisms. Four kinds of nanoparticle shapes, namely bricks, cylinders and platelets, are considered. The governing equations are simplified under the approximations of low Reynolds number (LRN), long wavelength (LWL) and Debye–Hückel linearization (DHL). The numerical solutions for the non-dimensional equations are solved using the computational software MATLAB with the help of the bvp4c function. The influences of different physical parameters on the flow and thermal characteristics are computed through pictorial interpretations.

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“…The essential demand for high-performance heat transfer fluids in various applications and industries, particularly in the energy and electrical sectors, has motivated much research [1,2]. Heat transfer efficiency is low in many engineering applications due to using low-conductive fluids such as water-and oilbased fluids [3][4][5]. As a result, researchers seek an alternate mechanism to replace these traditional fluids to improve thermal transfer efficiency.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Graphene‐Based Nanofluids for Energy System and Economic Feasibility

Mohammad

Aldlemy

Ahmed

et al. 2022

Journal of Nanomaterials

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Graphene has piqued the interest of many researchers due to its superior mechanical, thermal, and physiochemical properties. Graphene nanoplatelets with covalently functionalized surfaces (CF-GNPs) were employed in turbulent-heated pipes to undertake thermal and economic studies. CF-GNPs and distilled water were used to make the current nanofluids at various mass percentages, such as 0.025, 0.05, 0.075%, and 0.1 wt.%. In the range of 6,401 Re 11,907, the thermal system was heated up to 11,205 W/m2 under fully developed turbulent flow conditions. Field emission scanning electron microscopy (FE-SEM), zeta potential, nanoparticle sizer, and field emission transmission electron microscopy (FE-TEM) were used to examine the morphological features and characterise the particles. In addition, the current thermal system’s economic performance was assessed to estimate its price-to-operate ratio. There was a 16.10% reduction in heat exchanger size for 0.025 weight percent, 0.05 weight percent, 0.075 weight percent, and 0.1 weight percent. In addition, the power needed for the base fluid was 422 W, which was then lowered to 354 W, 326 W, 315 W, and 298 W for 0.025 wt.%, 0.05 wt.%, 0.075 wt.%, and 0.1 wt.%, respectively.

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Heat Transfer and Hydrodynamic Properties Using Different Metal-Oxide Nanostructures in Horizontal Concentric Annular Tube: An Optimization Study

Cited by 10 publications

References 51 publications

Experimental Study on Heat Transfer Improvement in a Circular Passage Using Metal Oxide and Ethylene Glycol Based Well Stable Nanofluids

Experimental Study on Heat Transfer Improvement in a Circular Passage Using Metal Oxide and Ethylene Glycol Based Well Stable Nanofluids

Simulation of Gold Nanoparticle Transport during MHD Electroosmotic Flow in a Peristaltic Micro-Channel for Biomedical Treatment

Thermal Analysis of Graphene‐Based Nanofluids for Energy System and Economic Feasibility

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