Pressure drop and heat transfer characteristics of nanofluids in horizontal microtubes under thermally developing flow conditions

Karimzadehkhouei, Mehrdad; Yalcin, Sinan E.; Şendur, Kürşat; Mengüç, M. Pınar; Koşar, Ali

doi:10.1016/j.expthermflusci.2014.10.013

Cited by 35 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ho et al [8] examined the results in different microchannels obtained for the maximum wall temperature, thermal resistance, mean heat transfer coefficient, pump power and friction factor with varying Reynolds in their work. Mohammed et al [3] have applied threedimensional simulations for varying Reynolds numbers at a constant volume for a triangular-shaped microchannel, a constant volume flow at the top plate, and evaluated the results.…”

Section: Preparation Of Nanofluidsmentioning

confidence: 99%

Numerical and Experimental Investigation of the Effect on Heat Transfer of Nanofluid Usage in Mini/Micro Channels

Erdoğan

Topuz

Engin

et al. 2018

Hittite J. Sci. Eng.

View full text Add to dashboard Cite

N owadays, the cooling systems are used in various areas such as energy transfer, computer systems, electronic systems and heating. Cooling systems provide much more efficient results with recent technology. For decades, many studies include nanofluids that used as refrigerant for cooling systems.The nanoparticle is a solution formed by the suspension of the nanoparticles in the liquid homogeneously and allowing the transport of the particles through the base liquid. Generally, metal particles and oxides are suspended and transported in pure water or ethylene glycol. We anticipated the heat transfer will be increase by the thermodynamic properties of nanoparticles.In recent years there have been many studies on the use of nanofluids in cooling systems. Some of those;

show abstract

Section: Preparation Of Nanofluidsmentioning

confidence: 99%

Numerical and Experimental Investigation of the Effect on Heat Transfer of Nanofluid Usage in Mini/Micro Channels

Erdoğan

Topuz

Engin

et al. 2018

Hittite J. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Many studies have been carried out to augment the boiling heat transfer performance by implementing various techniques including surface modifications and using additives to change the working fluid's properties [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Subcooled flow boiling heat transfer enhancement using polyperfluorodecylacrylate (pPFDA) coated microtubes with different coating thicknesses

Nedaei

Motezakker

Zeybek

et al. 2017

Experimental Thermal and Fluid Science

View full text Add to dashboard Cite

“…There are a number of studies related to convective heat transfer characteristics in microchannels [ 9 ] and heat transfer of nanofluids in mini/microchannels with the use of different types of nanoparticles such as Al 2 O 3 nanoparticles in water [ 10 , 11 , 12 , 13 , 14 ], TiO 2 nanoparticles in water [ 14 ], CuO nanoparticles in R-113 refrigerant [ 15 , 16 ], CuO and SiO 2 nanoparticles in R-134a refrigerant [ 17 ] and Cu nanoparticles in water. Recently, the stability of nanofluids with multi-wall carbon nanotubes (by adding surfactant) and their thermal conductivities were investigated [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…For nanofluids as a candidate for heat transfer enhancement, the entropy generation analysis becomes vital. Therefore, because the entropy generation analysis based on the experimental results was not extensively covered in the literature, second law analysis with entropy generation of CNTs/water nanofluids of this study as well as of Al 2 O 3 and TiO 2 nanoparticles/water nanofluids of the previous study [ 14 ] of the authors was performed.…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation Analysis of Laminar Flows of Water-Based Nanofluids in Horizontal Minitubes under Constant Heat Flux Conditions

Karimzadehkhouei

Shojaeian

Sadaghiani

et al. 2018

Entropy

Self Cite

View full text Add to dashboard Cite

During the last decade, second law analysis via entropy generation has become important in terms of entropy generation minimization (EGM), thermal engineering system design, irreversibility, and energy saving. In this study, heat transfer and entropy generation characteristics of flows of multi-walled carbon nanotube-based nanofluids were investigated in horizontal minitubes with outer and inner diameters of~1067 and~889 µm, respectively. Carbon nanotubes (CNTs) with outer diameter of 10-20 nm and length of 1-2 µm were used for nanofluid preparation, and water was considered as the base fluid. The entropy generation based on the experimental data, a significant parameter in thermal design system, was examined for CNTs/water nanofluids. The change in the entropy generation was only seen at low mass fractions (0.25 wt.% and 0.5 wt.%). Moreover, to have more insight on the entropy generation of nanofluids based on the experimental data, a further analysis was performed on Al 2 O 3 and TiO 2 nanoparticles/water nanofluids from the experimental database of the previous study of the authors. The corresponding results disclosed a remarkable increase in the entropy generation rate when Al 2 O 3 and TiO 2 nanoparticles were added to the base fluid.

show abstract

Pressure drop and heat transfer characteristics of nanofluids in horizontal microtubes under thermally developing flow conditions

Cited by 35 publications

References 28 publications

Numerical and Experimental Investigation of the Effect on Heat Transfer of Nanofluid Usage in Mini/Micro Channels

Numerical and Experimental Investigation of the Effect on Heat Transfer of Nanofluid Usage in Mini/Micro Channels

Subcooled flow boiling heat transfer enhancement using polyperfluorodecylacrylate (pPFDA) coated microtubes with different coating thicknesses

Entropy Generation Analysis of Laminar Flows of Water-Based Nanofluids in Horizontal Minitubes under Constant Heat Flux Conditions

Contact Info

Product

Resources

About