An optimization of heat transfer of nanofluid flow in a helically coiled pipe using Taguchi method

Mohammadi, Majid; Abadeh, Abazar; Nemati-Farouji, Reza; Passandideh-Fard, Mohammad

doi:10.1007/s10973-019-08167-y

Cited by 30 publications

(5 citation statements)

References 34 publications

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“…The average Nusselt number ( ), which is ratio of convective heat transfer rate to conductive heat transfer rate, is expressed as: (12) k is thermal conductivity of the fluid, and the average convective heat transfer coefficient ( ) along the test section is calculated as: (13) is constant heat flux applied onto the wall surface of the entrance and test section. The average temperature difference ( ) in this equation is expressed as: (14) where Ts is wall surface of the test section temperature and Tb is the fluid bulk temperature between inlet and outlet of the test section.…”

Section: Data Reductionmentioning

confidence: 99%

“…In addition to thermal and hydraulic performance researches, the cooling/heating systems need an optimum configuration including heat transfer enhancement technique. Majid et al [14] conducted a research on optimization of heat transfer on helically coiled pipe flowing nanofluid using Taguchi method. Poornodoya et al [15] optimized the performance parameters of a double pipe heat exchanger with cut twisted tape using respond surface method.…”

Section: Introductionmentioning

confidence: 99%

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Numerical and Optimization Study on a Heat Exchanger Tube Inserted with Ring by Taguchi Approach

Dağdevir¹

2023

Enenstrg

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This paper presents an optimization study on a heat exchanger tube inserted with circular rings by using numerical analysis results. Pitch length (50, 100, and 200 mm), inner diameter (15, 12.5, and 10.0 mm), and thickness (1, 3, and 5 mm) of the rings are considered as factors to be optimized. Water is selected as working fluid and the tube is considered under constant heat flux of 20 kW/m2 and turbulent flow conditions. k-Epsilon simulate the turbulent flow through the tube. The L9 design of experiment model is used to reduce the number of numerical runs which is proposed by the Taguchi method. The optimization study is conducted as single and multi-objective optimization by using the Taguchi method and Grey relation analysis. Furthermore, the contribution effects of the considered parameters on the Nusselt number and the friction factor result are revealed by ANOVA. Numerical results showed that the Nusselt number and the friction factor increase as the pitch length, the diameter and the thickness decreases. It is found that the most effective parameter on both the Nusselt number and the friction factor is inner diameter of the rings. For the single objective optimization, the highest Nusselt number and the lowest friction factor is obtained with the tube configuration that are found as the pitch length of 50 mm, the diameter of 10 mm and the thickness of 5 mm and the pitch length of 200 mm, the diameter of 15 mm and the thickness of 3.0 mm, respectively. The pitch length of 50 mm, the diameter of 15.0 mm and the thickness of 5.0 mm presents the best thermal and hydraulic performance according to the multi-objective optimization study.

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Section: Data Reductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical and Optimization Study on a Heat Exchanger Tube Inserted with Ring by Taguchi Approach

Dağdevir¹

2023

Enenstrg

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“…In summary, they achieved specific values of density, viscosity, specific heat, and thermal conductivity [4]. Mohammadi et al (2019) worked with water-Fe 3 O 4 NF to obtain the maximum heat transfer rate. They used Taguchi as an optimization method.…”

Section: Introductionmentioning

confidence: 99%

“…They used Taguchi as an optimization method. They tested the effect of different mass flowrates and nanoparticle concentration to reach the optimum values [5]. Nanofluid utilization in beverage production is a novel topic in the literature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanofluids on Heat Transfer in Milk and Tomato Juice Production: An Optimization Study with ANCOVA

Ozcakir

2023

Foods 2023

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“…The method is used to control product quality in industrial manufacturing processes. Currently, the Taguchi method is widely applied in different fields to reduce the number of experimental or numerical tests, but parametric studies and optimization can also be achieved [18][19][20][21]. For the application of the Taguchi method to the SAH duct study, some works have been performed.…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis and Taguchi-Based Optimization of the Thermohydraulic Performance of a Solar Air Heater Duct Baffled on a Back Plate

2021

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In this paper, a solar air collector duct equipped with baffles on a back plate was numerically investigated. The Reynolds number (Re) was varied from 5000 to 20,000, the angle baffle (a) from 30° to 120°, the baffle spacing ratio (Pr) from 2 to 8, and the baffle blockage ratio (Br) from 0.375 to 0.75 to examine their effects on the Nusselt number (Nu), the friction factor (f), and the thermohydraulic performance parameter (η). The 2D numerical simulation used the standard k-ε turbulence model with enhanced wall treatment. The Taguchi method was used to design the experiment, generating an orthogonal array consisting of four factors each at four levels. The optimization results from the Taguchi method and CFD analysis showed that the optimal geometry of a = 90°, Pr = 6, and Br = 0.375 achieved the maximum η. The influence of Br on all investigated parameters was considerable because as Br increased, a larger primary vortex region was formed downstream of the baffle. At Re = 5000 and the optimal geometry parameters, a maximum η of 1.01 was reached. A baffle angle between 60° and 90° achieved a high Nusselt number due to the impingement heat transfer.

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An optimization of heat transfer of nanofluid flow in a helically coiled pipe using Taguchi method

Cited by 30 publications

References 34 publications

Numerical and Optimization Study on a Heat Exchanger Tube Inserted with Ring by Taguchi Approach

Numerical and Optimization Study on a Heat Exchanger Tube Inserted with Ring by Taguchi Approach

Effect of Nanofluids on Heat Transfer in Milk and Tomato Juice Production: An Optimization Study with ANCOVA

CFD Analysis and Taguchi-Based Optimization of the Thermohydraulic Performance of a Solar Air Heater Duct Baffled on a Back Plate

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