Flow boiling heat transfer to MgO-therminol 66 heat transfer fluid: Experimental assessment and correlation development

Sarafraz, M.M.; Arya, Hemendra; Saeedi, Mostafa; Ahmadi, Danial

doi:10.1016/j.applthermaleng.2018.04.075

Cited by 69 publications

(32 citation statements)

References 59 publications

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“…In the past few decades, the nanotechnology was used extensively to improve the heat exchanger performance by adding different types and concentrations of nanoparticles to the working fluids . It has been reported that the presence of nanoparticles in the working fluid affects the heat transfer rate by different mechanisms such as: thermophoresis and Brownian motion with closure formation . In a series of experimental investigations Sarafraz et al found that the different types of nanofluids (CuO, Mgo, and carbon nanotube) caused an appreciable heat transfer enhancement for flow boiling when used in low concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that the presence of nanoparticles in the working fluid affects the heat transfer rate by different mechanisms such as: thermophoresis and Brownian motion with closure formation . In a series of experimental investigations Sarafraz et al found that the different types of nanofluids (CuO, Mgo, and carbon nanotube) caused an appreciable heat transfer enhancement for flow boiling when used in low concentrations. However, for higher concentrations of nanoparticles (more than wt% = 0.1 often), the heat transfer rate decreased appreciably due to the formation of fouling layer of nanoparticles on the heat transfer surface.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Oil fouling in double‐pipe heat exchanger under liquid‐liquid dispersion and the influence of copper oxide nanofluid

Majdi

Alabdly

Hasan

et al. 2019

Heat Trans. Asian Res.

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Dispersions of oil in water are encountered in a variety of industrial processes leading to a reduction in the performance of the heat exchangers when thermally treating such two phase fluids. This reduction is mainly due to changes in the thermal and hydrodynamical behavior of the two phase fluid. In the present work, an experimental investigation was performed to study the effects of light oil fouling on the heat transfer coefficient in a double-pipe heat exchanger under turbulent flow conditions. The effects of different operating conditions on the fouling rate were investigated including: hot fluid Reynolds number (the dispersion), cold fluid Reynolds number, and time. The oil fouling rate was analyzed by determining the growth of fouling resistance with time and through pressure drop measurements. The influence of copper oxide (CuO) nanofluid on the fouling rate in the dispersion was also determined. It was found that the presence of dispersed oil causes a reduction in heat transfer coefficient by percentages depending on the Reynolds number of both cold and hot fluids and the concentration of oil. In addition, the time history of fouling resistance exhibited different trends with the flow rates of both fluids and its trend was influenced appreciably by the presence of CuO nanofluid. K E Y W O R D S copper oxide, dispersion, double-pipe heat exchanger, fouling, heat transfer, nanofluid, oil Heat Transfer-Asian Res.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oil fouling in double‐pipe heat exchanger under liquid‐liquid dispersion and the influence of copper oxide nanofluid

Majdi

Alabdly

Hasan

et al. 2019

Heat Trans. Asian Res.

View full text Add to dashboard Cite

show abstract

“…Furthermore, they concluded that the CHF increased compared to pure water due to the wettability enhancement. Sarafraz et al [52] conducted an experimental study of the flow boiling with a new type of nanofluid. The MgO nanoparticles with size 50 nm were dispersed in Therminol 66 as a base fluid via two-step method, and they used mass concentration 0.1 to 0.3 mass%.…”

Section: Effect Of Nanofluids On (Htc) and (Chf)mentioning

confidence: 99%

Experimental studies of flow boiling heat transfer by using nanofluids

Kamel

Lezsovits

Hussein

2019

J Therm Anal Calorim

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Flow boiling heat transfer widely utilized in numerous industrial applications such as boiler tubes, evaporators and cooling of reactors in a nuclear power plant. Nanofluids are a new category of thermal fluids, made by dispersing a nanometer solid particle which is usually less than 100 nm into conventional liquids such as water, oil engine and ethylene glycol with the intent to enhance the thermal properties of the base fluids. This work reviews the recent experimental studies focusing on the flow boiling heat transfer using nanofluids. The latest results associated with this subject are presented and outlined to account the influence of several parameters, which are related to operating conditions and nanoparticles morphology on the heat transfer coefficient and the critical heat flux. Besides, the effects of nanoparticles on other related sub-phenomenon of the flow boiling by using nanofluids were discussed. Moreover, the latest review papers of the related topic were presented and briefly discussed. Finally, suggestions for future research activities related to this field were also concisely listed.

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“…Moreover, the surface and atomic structures of the nanoparticles were explored through SEM and FTIR tests. Sarafraz et al [28] explored the flow boiling heat transfer properties of MgO/therminol nanofluid as a potential coolant on a copper-made disc. Moradikazerouni et al [29] investigated the optimal artificial neural network (ANN) designed to evaluate the thermal conductivity enhancement of SWCNTs/EG-water nanofluid using experimental data.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Variable Viscosity Impact on MHD Flow and Heat Transfer of Nanofluid Using the Cattaneo–Christov Model

2020

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In this mathematical study, magnetohydrodynamic, time-independent nanofluid flow over a stretching sheet by using the Cattaneo-Christov heat flux model is inspected. The impact of the thermal, solutal boundary and gravitational body forces with the effect of double stratification on the mass flow and heat transfer phenomena is also observed. The temperature-dependent viscosity impact on heat transfer through a moving sheet with capricious heat generation in nanofluids have studied, and the viscosity of the fluid is presumed to deviate as the inverse function of temperature. With the appropriate transformations, the system of partial differential equations is transformed into a system of nonlinear ordinary differential equations. By applying the variational finite element method, the transformed system of equations is solved. The properties of the several parameters for buoyancy, velocity, temperature, stratification, and Brownian motion parameters have examined. The enhancement in the concentration and thermal boundary layer thickness of the nanofluid sheet due to the increment in the viscosity parameter, also increased the temperature and concentration of nanoparticles. Moreover, the fluid temperature declined with the increasing values of thermal relaxation parameter. This displays that the Cattaneo-Christov heat flux model provides a better assessment of temperature distribution. Moreover, confirmation of the code and precision of the numerical method has inveterate with the valuation of the presented results with previous studies.

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Flow boiling heat transfer to MgO-therminol 66 heat transfer fluid: Experimental assessment and correlation development

Cited by 69 publications

References 59 publications

Oil fouling in double‐pipe heat exchanger under liquid‐liquid dispersion and the influence of copper oxide nanofluid

Oil fouling in double‐pipe heat exchanger under liquid‐liquid dispersion and the influence of copper oxide nanofluid

Experimental studies of flow boiling heat transfer by using nanofluids

Finite Element Analysis of Variable Viscosity Impact on MHD Flow and Heat Transfer of Nanofluid Using the Cattaneo–Christov Model

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