Effect of thermophysical properties models on the predicting of the convective heat transfer coefficient for low concentration nanofluid

Duangthongsuk, Weerapun; Wongwises, Somchai

doi:10.1016/j.icheatmasstransfer.2008.07.015

Cited by 225 publications

(58 citation statements)

References 21 publications

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“…The density, specific heat and thermal conductivity of nanofluid were calculated using two phase flow equations [10], [11]. " nf = " " p + (1-" ) " bf (1) C pnf = (1-" ) ( ) C p bf + " ( ) C p p (2) " is the volume concentration and " is the density.…”

Section: Nanofluid Preparationmentioning

confidence: 99%

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO₂-Nanofluid Coolant

Salamon

Kumar

Thirumalini

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract:The use of nanoparticle dispersed coolants in automobile radiators improves the heat transfer rate and facilitates overall reduction in size of the radiators. In this study, the heat transfer characteristics of water/propylene glycol based TiO 2 nanofluid was analyzed experimentally and compared with pure water and water/propylene glycol mixture. Two different concentrations of nanofluids were prepared by adding 0.1 vol. % and 0.3 vol. % of TiO 2 nanoparticles into water/propylene glycol mixture (70:30). The experiments were conducted by varying the coolant flow rate between 3 to 6 lit/min for various coolant temperatures (50°C, 60°C, 70°C, and 80°C) to understand the effect of coolant flow rate on heat transfer. The results showed that the Nusselt number of the nanofluid coolant increases with increase in flow rate. At low inlet coolant temperature the water/propylene glycol mixture showed higher heat transfer rate when compared with nanofluid coolant. However at higher operating temperature and higher coolant flow rate, 0.3 vol. % of TiO 2 nanofluid enhances the heat transfer rate by 8.5% when compared to base fluids.

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Section: Nanofluid Preparationmentioning

confidence: 99%

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO₂-Nanofluid Coolant

Salamon

Kumar

Thirumalini

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…There are two factors causes the property of nanomaterial significantly differ drastically from other materials which is increase surface area and quantum confinement effect such as reactivity, strength, electrical conductivity etc. [6][7] . For synthesis of Ag NPs, a number of synthesis approaches are available for example photochemical and chemical reactions, thermal decomposition, reduction in solution, electrochemical, sonochemical, microwave and also green synthesis 8 .…”

Section: Introductionmentioning

confidence: 99%

Silver/oil Nanofluids in Heat Exchanger An Experimental Study on Convective Heat Transfer

Hosseini¹,

Ghorbani²

2018

Orient. J. Chem

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In present work, we used two sizes of silver nanoparticles (NPs) with different particle loadings and dispersed them into oil to make nanofluids. The silver/oil nanofluid with different nanoparticles weight fractions of 0.5%, 1% and 2% was prepared by ultrasonic device in two step method. The measurements of heat transfer coefficients were performed. An up to 30% enhancement of the heat transfer coefficient was observed in the laminar flow regime. The heat transfer coefficient is shown to increase with increasing Reynolds number. In addition, the heat transfer coefficient decreased with increasing fluid temperature. A constant downward trend of enhancement ratio with respect to Reynolds number was specified for the nanofluids discussed in this study.

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“…The considerable interest received for the flow in a nanofluid is motivated by the fact that nanofluids provide good stability and rheological properties (Duangthongsuk & Wongwises 2008). The term 'nanofluid', defined as a mixture of nanoparticles and the base fluid e.g.…”

Section: Introductionmentioning

confidence: 99%

“…This mixture is able to enhance the thermal conductivity and convective heat transfer coefficient compared to the base fluid (Kakac & Pramuanjaroenkij 2009). A good literature review on this topic can be found in the book by Das et al (2007) and in the review papers by Buongiorno (2006), Duangthongsuk and Wongwises (2008), Kakac and Pramuanjaroenkij (2009), Trisaksri and Wongwises (2007) and Wang and Mujumdar (2008).…”

Section: Introductionmentioning

confidence: 99%

Unsteady Flow of a Nanofluid Past a Permeable Shrinking Cylinder using Buongiorno's Model

Zaimi¹,

Ishak²,

Pop³

2017

JSM

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Effect of thermophysical properties models on the predicting of the convective heat transfer coefficient for low concentration nanofluid

Cited by 225 publications

References 21 publications

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO₂-Nanofluid Coolant

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO₂-Nanofluid Coolant

Silver/oil Nanofluids in Heat Exchanger An Experimental Study on Convective Heat Transfer

Unsteady Flow of a Nanofluid Past a Permeable Shrinking Cylinder using Buongiorno's Model

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Effect of thermophysical properties models on the predicting of the convective heat transfer coefficient for low concentration nanofluid

Cited by 225 publications

References 21 publications

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO2-Nanofluid Coolant

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO2-Nanofluid Coolant

Silver/oil Nanofluids in Heat Exchanger An Experimental Study on Convective Heat Transfer

Unsteady Flow of a Nanofluid Past a Permeable Shrinking Cylinder using Buongiorno's Model

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Product

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Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO₂-Nanofluid Coolant

Experimental Investigation of Heat Transfer Characteristics of Automobile Radiator using TiO₂-Nanofluid Coolant