Heat Transfer Enhancement with Nanofluids for Automotive Cooling

Hussein, Adnan M.; Kadirgama, K.; Sharma, K.V.; Bakar, Rosli Abu

doi:10.1007/978-3-319-29761-3_3

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…In addition, as nanofluid viscosity is related to resistance to flow and pumping power in energy systems, it is better to use low viscosity base fluid. Thermal conductivity is an important physical properties which can be used to evaluate the efficiency of nanofluids as coolants [4,5], predict heat transfer within exchangers [6,7], natural convection in cavities as well [8,9] and for numerical analyses of these fluids in various systems [10,11]. Some important works dealing with thermal conductivity of CNT nanofluids are briefly reviewed in the following.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of CNT water based nanofluids: Experimental trends and models overview

Estellé¹,

Halelfadl²,

Maré³

2015

Journal of Thermal Engineering

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Thermal conductivity measurement of carbon nanotubes water-based nanofluids is here reported. We have considered in particular the influence of nanoparticle volume fraction, temperature, carbon nanotube aspect ratio and different kind of surfactant (SDBS, Lignin, Sodium polycarboxylate) on thermal conductivity enhancement of nanofluids. The experiments show that TC enhancement of nanofluids produces at very low volume fraction. It is also mainly governed by both volume fraction and temperature increase. However, TC enhancement of nanofluids is weakly affected by carbon nanotubes aspect ratio and surfactant type used in the study.In addition, various theoretical thermal conductivity models are used to possibly correlate the experimental data and explain the TC enhancement of nanofluids. The selected models do not capture the experimental findings within the range of this parametric study, evidencing the need to develop appropriate model for TC enhancement prediction of CNT nanofluids and measure TC of this kind of nanofluids before performing numerical studies in heat exchangers and cavities.

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Section: Introductionmentioning

confidence: 99%

Thermal conductivity of CNT water based nanofluids: Experimental trends and models overview

Estellé¹,

Halelfadl²,

Maré³

2015

Journal of Thermal Engineering

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“…Fouling can be defined as accumulation of undesirable substances on a surface. It is classified into the following categories such as particulate fouling, crystallisation fouling, corrosion fouling, bio fouling and chemical reaction fouling [11][12][13][14]. Since the 1950s, some efforts have been done on the variation in geometry of heat exchanger apparatus.…”

Section: Introductionmentioning

confidence: 99%

Titanium oxide with nanocoolant for heat exchanger application

Kottasamy¹,

Kadirgama²,

Annamalai³

et al. 2017

J. MECH. ENG. SCI.

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The objective of this paper is to investigate the properties of oil-based nanofluids and produce stable and biodegradable oil-based nanofluids by metal oxide nanoparticles. The cooking oil was used as a base for the nanofluid preparation. Titanium oxide was embedded as the nanoparticles, mixed with cooking oil volume concentration of nanofluids specimens, and labelled as 0.01, 0.03, 0.05, 0.07, and 0.09. The study explained the analysis techniques applied to determine the enhancement of thermal properties of nanofluids. The thermal conductivity of nanofluids was studied by heat transfer rate and the overall heat transfer coefficient gained. The metal oxide nanomaterials were mixed with the oil-based fluids in order to prepare the specimens. This research focused on the usage of vegetable oil and titanium oxide nanoparticles mixture to form nanofluids. The results obtained indicated that the nanofluid gave better thermal conductivity than oil-based fluids. The results significantly increased the thermal properties limitation and improved the product reliability. The enhancement of heat transfer rate for 0.09% of nanofluid volume concentration was increased by 36.25%

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The effect of different coolants on emissions and fuel consumption of a diesel engine

Dong

Wang

2020

J Braz. Soc. Mech. Sci. Eng.

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A diesel engine performance test system is set up based on the AVL framework, and an experimental investigation is conducted to evaluate the effects of three coolants on the diesel engine coolant outlet temperature, lubricating oil temperature, exhaust emissions and fuel consumption under real engine conditions. The results show that when the coolant circulating temperature is 80 °C, the exhaust temperature of the diesel engine using C-PG (anhydrous propylene glycol) coolant is the lowest, and the lubricating oil temperature is increased by 5 °C. Thus, when the coolant circulating temperature is 95 °C, the C-PG coolant is used. The outlet temperature and the lubricating oil temperature are similar to those of the other two coolants. The nitrogen oxides (NOx) emission of the diesel engine using C-PG coolant is slightly higher than that with the other two coolants, while the soot, carbon monoxide (CO) and hydrocarbon (HC) emissions are reduced. Finally, when the coolant circulating temperature is 95 °C, the fuel consumption using the C-PG coolant and L2 lubricating oil is reduced by 3.8%, compared with the C-EG (mixture of water and ethylene glycol) coolant and L1 lubricating oil.

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Heat Transfer Enhancement with Nanofluids for Automotive Cooling

Cited by 5 publications

References 7 publications

Thermal conductivity of CNT water based nanofluids: Experimental trends and models overview

Thermal conductivity of CNT water based nanofluids: Experimental trends and models overview

Titanium oxide with nanocoolant for heat exchanger application

The effect of different coolants on emissions and fuel consumption of a diesel engine

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