The effect of using circular and porous circular fins on the thermal performance of a shell and helically coiled heat exchanger: A numerical and experimental study

International Journal of Thermal Sciences, Год журнала: 2025, Номер 214, С. 109894 - 109894

Опубликована: Апрель 4, 2025

Язык: Английский

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Synthesis of copper oxide nanoparticles and their efficiency in automotive radiator heat transfer systems

Powder Technology, Год журнала: 2025, Номер unknown, С. 120887 - 120887

Опубликована: Март 1, 2025

Язык: Английский

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Experimental Study on the Thermal Performance of Hybrid Nanofluid in a Compact Plate Heat Exchanger Under the Influence of a Magnetic Field

Case Studies in Thermal Engineering, Год журнала: 2025, Номер unknown, С. 106031 - 106031

Опубликована: Март 1, 2025

Язык: Английский

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Effect of Using Wire Coils and Aluminum Oxide Nanofluid on Heat Transfer in a Double-pipe Heat Exchanger and Predicting Data with Artificial Neural Networks

Case Studies in Thermal Engineering, Год журнала: 2025, Номер unknown, С. 106232 - 106232

Опубликована: Май 1, 2025

Язык: Английский

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Heat Exchange Capability of Main Heat Exchangers in Pressurized Water Test Loop under Low Parameter Conditions during Fuel Assembly Irradiation

Case Studies in Thermal Engineering, Год журнала: 2025, Номер unknown, С. 106276 - 106276

Опубликована: Май 1, 2025

Язык: Английский

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A Comprehensive Numerical and Experimental Study on Improving the Thermal Performance of a Shell and Helically Coiled Heat Exchanger Utilizing Hybrid Magnetic Nanofluids and Porous Spiral-Type Fins

Fluids, Год журнала: 2025, Номер 10(6), С. 141 - 141

Опубликована: Май 27, 2025

In this work, a novel type of shell and helically coiled heat exchangers (SHCHEXs) that are used extensively in numerous applications has been numerically experimentally studied. A low-cost easily applicable design for enhancing the exchange rate exchanger developed within scope study. context, SHCHEX with an internal guiding pipe spirally formed fins purpose leading fluid cold loop over coil where hot flows inside it. Numerical simulations were carried out study determining how new changes including nonporous porous spiral affected transfer system. experimental part current research, fabricated its thermal behavior tested at various conditions utilizing water MnFe2O4-ZnFe2O4/water hybrid-type nanofluid. Both numerical findings research exhibited positive effects using modifications fin integration. Overall work clearly significant effect medication MnFe2O4-ZnFe2O4/water-hybrid magnetic nanofluid utilization on performance improvement exchanger. Experimentally determined showed improved coefficient by average ratio 16.2%. addition, mean variation between obtained exit temperature achieved one was 3.9%.

Язык: Английский

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Mathematical analysis of nanoparticle type and volume fraction on heat transfer efficiency of nanofluids

Open Physics, Год журнала: 2025, Номер 23(1)

Опубликована: Янв. 1, 2025

Abstract Nanofluids (NFs) have been implemented in several areas to increase heat transfer efficiency. Thus, efficiency for energy can be achieved. In this study, the effect of nanoparticle (NP) type, volume fraction, and Re number on NFs were analyzed numerically, statistically, theoretically. Heat coefficient, units, wall shear stress, friction factor selected as NFs. ANSYS Fluent software was utilized carry out computational fluid dynamics analyses. The numerical calculation scheme by employing Taguchi L9 orthogonal array with three decisive factors. NP assumed factors levels. Signal-to-noise ratio analysis determine direction impact ideal levels each Significance contribution rates calculated Analysis Variance. According mathematical responses, most effective NPs h τ w identified Gr, Al 2 O 3 , Cu, respectively, whereas units are found respectively. addition, from 6,000 8,000 causes an a decrease NTU f . data achieved research may guide paper experimental

Язык: Английский

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Entropy analysis in Darcy-Forchheimer flow of nanofluids with thermal radiation: A comparative numerical study

Proceedings of the Institution of Mechanical Engineers Part N Journal of Nanomaterials Nanoengineering and Nanosystems, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Heat transfer in the transportation of nanoparticles has a significant impact on raising efficiency various devices industrial and technological fields. Here we investigated heat entropy generation rate for Darcy-Forchheimer stagnation point fluid flow toward stretched surface presence two types nanofluids (Al 2 O 3 +water) +kerosene oil). In modeling energy expression, utilized radiative flux, internal generation, viscous dissipation. Slip thermal stratification effects are also present. By employing appropriate transformations, nonlinear partial differential system can be converted into an ordinary system. For solutions computations, numerical scheme ND-Solve, along with shooting techniques, is implemented. The outcomes variables that have temperature velocity analyzed. Entropy Bejan number considered model discussed. A physical description against sundry presented. From results, it observed greater values both inverse Darcy ( D a − 1 ) slip parameter β 3 field shows decreasing trend intensifies higher radiation R d * δ ^ ). rises all parameters while decreases Eckert Ec boosted drag reduces convection 2

Язык: Английский

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Optimization of Turbulent Flow Heat Transfer in a 3D Cubic Shell Heat Exchanger using Non-Mixture Multiphase Nanofluids

Journal of Engineering Research, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

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