Investigation of thermal flow structure and performance heat transfer in three‐dimensional circular pipe using twisted tape based on Taguchi method analysis

Al‐Obaidi, Ahmed Ramadhan

doi:10.1002/htj.22368

Cited by 28 publications

(6 citation statements)

References 29 publications

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“…[1][2][3] Different types of heat exchangers are extensively employed in frequent industries applications, for instance, power plants, oil, food industry, refrigeration, and various process. 4 Heat exchangers are expenditure apparatuses in the industry, 5,6 that play a significant part in the electric and chemical industrial region. 7 There are numerous kinds of heat exchangers that are broadly used in various applications technology.…”

Section: Introductionmentioning

confidence: 99%

“…However, exploring energy resources effectively using obtainable energy can add more effective costs to meet the energy demand 1–3 . Different types of heat exchangers are extensively employed in frequent industries applications, for instance, power plants, oil, food industry, refrigeration, and various process 4 . Heat exchangers are expenditure apparatuses in the industry, 5,6 that play a significant part in the electric and chemical industrial region 7 .…”

Section: Introductionmentioning

confidence: 99%

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Characterization of internal thermohydraulic flow and heat transfer improvement in a three‐dimensional circular corrugated tube surfaces based on numerical simulation and design of experiment

Al‐Obaidi

2022

Heat Trans

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To meet the requirements of development in heat exchangers design, the effect of different tubes geometrical parameters on its flow field analysis and thermal heat transfer performance are investigated in the current research work. The hydraulic thermal fluid coupling with computational simulations is applied. The numerical results are solving used flow transport and heat transfer equations, then these results are validated with available experimental data. The behavior of hydraulic and thermal flow in the corrugated tube is discussed with different geometrical parameters' position and shape. Turbulent flow in the tube is calculated in three‐dimensional numerical simulations with optimization of a multiobjective algorithm are analyzed. The influences of various design parameters, for instance, the number of corrugated rings around the tube, distance between each corrugated ring, the diameter of the ring, and pitch of ring are investigated firstly in the flow field and then optimized by using the design of experiment (DOE). The influence of flow structural modifications such as static pressure, dynamic pressure, and pressure drop is taken into consideration as analyzed performance parameters. The DOE method is investigated based on implements and variances the L16 orthogonal arrays are chosen as the experimental strategy. Furthermore, the optimization results found that the maximum value of pressure difference was for corrugated diameter. The numerical method using DOE has enhanced heat transfer rate as compared to the smooth pipe. Moreover, the minimum Tout is for Case 11 (296.49°C) and the maximum Tout is for (303.10°C) hence the value of Nu number for both cases is 32.9 and 42, respectively. That means using this type of passive device can improve the heat transfer in the pipe. The outcomes illustrate that the performance evaluation factor (PEF) ratio of the corrugated pipe with different geometrical configurations is changed and increased as the corrugated pipe geometrically changed and the value of PEF is more than 1.3.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of internal thermohydraulic flow and heat transfer improvement in a three‐dimensional circular corrugated tube surfaces based on numerical simulation and design of experiment

Al‐Obaidi

2022

Heat Trans

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“…Recently, the improvement of heat exchangers is the main focus of various researchers. In the passive technique, many approaches to improvement of heat performance are practical in heat exchangers [1][2][3][4] because this enhancement has become a widespread area for interested researchers. Inserting the twisted tape in the tubes heat exchanger [5][6][7] shows a significant modification and rise in thermal performance amount.…”

Section: Introductionmentioning

confidence: 99%

“…Likewise, that lead to enhancing the value of convective thermal resistance then highly pressure drop increases and hence the heat performance improves. Afsharpanah et al, Al-Obaidi et al, and Kumar et al [28][29][30][31][32][33][34][35][36] studied using different types of twisted tape in heat exchanger pipes. The noted that using these dives can improved the overall heat performance in pipes.…”

Section: Introductionmentioning

confidence: 99%

Thermal flow and heat performance analyses in circular pipe using different twisted tape parameters based on design of experiments

Al‐Obaidi

2022

Heat Trans

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In different energy conservation types, heat transfer improvement is a significant field that is directly connected to systems of economic efficiency. In this analysis, different twisted tape configurations are considered such as the augmentation thermal approach, the impact of various twisted tape parameters on the thermal performance of flow pattern, improvement of heat transfer are numerically conducted. The geometrical configurations used for this investigation include twisted tape thickness, twisted tape width, inward thickness and number of turns. The design of the technique of the experiment is used to investigate the effect of these parameters on hydraulic flow structure and enhancement of heat transfer. The Taguchi method is based on analysis of changes and performs the orthogonal arrays. Besides this, the orthogonal array of L16 is selected for this numerical work. The average percentage error between the experimental and computational fluid dynamics (CFD) outcomes for Nu number and friction factor are noted at about 6.5% and 4.5%. It is observed that the best twisted tape configuration design is obtained by applying CFD methodology compared with the Taguchi method to improve the heat performance using the performance evaluation factor (PEF) was more than 1.2. The maximum value of temperature differences and friction factor was for model 13. Moreover, the thermal performance was good as the values of PEF and the values of PEF are greater than 1.

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“…Several factors influence the PCMs' energy storage capability in solar power plants' heat recovery [25]. Al-Obaid developed CFD simulations to examine the effect of various twisted tape configurations on thermal characteristics and flow behavior [26]. Al-Obaidi analyzed the fluid flow and heat transfer characteristics for several tube geometries.…”

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confidence: 99%

Experimental Investigation of a Phase-Change Material’s Stabilizing Role in a Pilot of Smart Salt-Gradient Solar Ponds

Choubani,

Ghriss,

Alrasheedi

et al. 2024

FHMT

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Faced with the world's environmental and energy-related challenges, researchers are turning to innovative, sustainable and intelligent solutions to produce, store, and distribute energy. This work explores the trend of using a smart sensor to monitor the stability and efficiency of a salt-gradient solar pond. Several studies have been conducted to improve the thermal efficiency of salt-gradient solar ponds by introducing other materials. This study investigates the thermal and salinity behaviors of a pilot of smart salt-gradient solar ponds with (SGSP) and without (SGSPP) paraffin wax (PW) as a phase-change material (PCM). Temperature and salinity were measured experimentally using a smart sensor, with the measurements being used to investigate the stabilizing effects of placing the PCM in the solar pond's lower convective zone. The experimental results show that the pond with the PCM (SGSPP) achieved greater thermal and salinity stability, with there being a lesser temperature and salinity gradient between the different layers when compared to a solar pond without the PCM (SGSP). The use of the PCM, therefore, helped control the maximum and minimum temperature of the pond's storage zone. The UCZ has been found to operate approximately 4 degrees above the average ambient temperature of the day in the SGSPP and 7 degrees in SGSP. Moreover, an unstable situation is generated after 5 days from starting the operation and at 1.9 m from the bottom, and certain points have the tendency to be neutral from the upper depths in 1, 3 m of the bottom. KEYWORDSSmart salt-gradient solar pond; phase-change material; experimental investigation; stability of solar ponds Nomenclature αCoefficient of thermal expansion (C -1 ) (±3%) βCoefficient of salinity expansion (m 3 .kg -1 ) (±3%) T Temperature (K) S Salinity (%)

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Investigation of thermal flow structure and performance heat transfer in three‐dimensional circular pipe using twisted tape based on Taguchi method analysis

Cited by 28 publications

References 29 publications

Characterization of internal thermohydraulic flow and heat transfer improvement in a three‐dimensional circular corrugated tube surfaces based on numerical simulation and design of experiment

Characterization of internal thermohydraulic flow and heat transfer improvement in a three‐dimensional circular corrugated tube surfaces based on numerical simulation and design of experiment

Thermal flow and heat performance analyses in circular pipe using different twisted tape parameters based on design of experiments

Experimental Investigation of a Phase-Change Material’s Stabilizing Role in a Pilot of Smart Salt-Gradient Solar Ponds

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