Heat transfer enhancement using air-atomized spray cooling with water–Al2O3 nanofluid

Ravikumar, Satya V.; Haldar, Krishnayan; Jha, Jay Mant; Chakraborty, Samarshi; Sarkar, Ishita; Pal, Surjya K.; Chakraborty, Sudipto

doi:10.1016/j.ijthermalsci.2015.04.012

Cited by 62 publications

(16 citation statements)

References 46 publications

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“…However, it cannot meet the increasing heat dissipation demand of onboard BLSG with high density because the limitation of heat dissipation capacity of lubricating oil. The heat transfer capacity of nanofluid is far more than of its base fluid [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. Thus, a nanofluid-based cooling system (NBCS) for the BLSG, which has high thermal dissipation demand, is proposed in this paper.…”

Section: Idea Of Nanofluid-based Cooling System and Mathematic Modmentioning

confidence: 99%

“…Nanofluids have superior heat dissipation application compared to the base fluid. Therefore, it has been widely studied and gradually applied practically for the purpose of heat dissipation [ 18 , 19 , 20 ]. Ravikumar et al [ 18 ] found that when using the Al 2 O 3 nanofluid as coolant of air-atomized spray cooling that it had a better enhancement of heat transfer than the base fluid for high heat flux dissipation applications.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it has been widely studied and gradually applied practically for the purpose of heat dissipation [ 18 , 19 , 20 ]. Ravikumar et al [ 18 ] found that when using the Al 2 O 3 nanofluid as coolant of air-atomized spray cooling that it had a better enhancement of heat transfer than the base fluid for high heat flux dissipation applications. Peyghambarzadeh et al [ 19 ] conducted an experimental study to show that the Al 2 O 3 nanofluid, when used as car radiator coolant, has a clearly superior heat transfer enhancement compared to its base fluid.…”

Section: Introductionmentioning

confidence: 99%

“…As the heat cooling ability of conventional liquid cooling is limited by the heat transfer capacity of the cooling medium, such as oil and water, the application of nanofluid for electrical rotating machine cooling mission will have a big advantage relative to the base fluid, which can meet the increasing heat dissipation requirement of aircraft generators with high power density. The most studied nanoparticles are metal [ 21 , 23 ] and metal oxide nanoparticles [ 18 , 19 , 20 , 24 , 25 ]. Compared with the metal nanoparticles, metal oxide nanoparticles have a better nonconductivity, which means that the application of metal oxide nanoparticles into the base fluid has less influence on the electrical conversion process in BLSG.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation on the Thermal Performance of Nanofluid-Based Cooling System for Synchronous Generators

Xiong

et al. 2019

Entropy

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This paper presents a nanofluid-based cooling method for a brushless synchronous generator (BLSG) by using Al2O3 lubricating oil. In order to demonstrate the superiority of the nanofluid-based cooling method, analysis of the thermal performance and efficiency of the nanofluid-based cooling system (NBCS) for the BLSG is conducted along with the modeling and simulation cases arranged for NBCS. Compared with the results obtained under the base fluid cooling condition, results show that the nanofluid-based cooling method can reduce the steady-state temperature and power losses in BLSG and decrease the temperature settling time and changing ratio, which demonstrate that both steady-state and transient thermal performance of NBCS are improved as nanoparticle volume fraction (NVF) in nanofluid increases. Besides, although the input power of cycling pumps in NBCS has ~30% increase when the NVF is 10%, the efficiency of the NBCS has a slight increase because the 4.1% reduction in power loss of BLSG is bigger than the total incensement of input power of the cycling pumps. The results illustrate the superiority of the nanofluid-based cooling method, and it indicates that the proposed method has a broad application prospect in the field of thermal control of onboard synchronous generators with high power density.

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Section: Idea Of Nanofluid-based Cooling System and Mathematic Modmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation on the Thermal Performance of Nanofluid-Based Cooling System for Synchronous Generators

Xiong

et al. 2019

Entropy

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“…KD2Pro is used to test the nanofluid thermal conductivity and previously various researchers used the same instrument for same tests [35][36][37][38]. The silica nanofluid viscosity is measured by Brookfield digital rheometer model LVDV-III, the same instrument is employed previously by various researchers [39][40][41] for measuring nanofluid viscosity.…”

Section: Fig2 Brookfield Rheometermentioning

confidence: 99%

Experimental Testing of Thermo Physical Properties of Novel Water and Glycerol Mixture-Based Silica Nano Fluids

Prrasad¹,

Krishna²,

Sharma³

2019

IJRTE

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The main objectives of the present work embrace the preparation of cobalt nanofluids, amalgamation of silica nanofluid with optimum glycerol-water (G-W) mixture ratio and estimation of its thermal properties like thermal conductivity and viscosity experimentally. Optimum ratio of base liquid (G-W mixture) was selected for the preparation of nanofluids. Subsequently, thermophysical properties of the hybrid nano mixture have been determined experimentally using KD2Pro thermal properties analyzer and Brookfield viscometer at different volume concentrations of silica nanofluids. Attained results reveal that, the dynamic viscosity and thermal conductivity are found to be growing remarkably with the increase in nanoparticle weight concentration in base liquid mixture. The results are found to be in good agreement with the available data from the literature.

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Thermal Convection and Solutions

2024

Thermal Management for Opto‐electronics Packaging and Applications

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Heat transfer enhancement using air-atomized spray cooling with water–Al2O3 nanofluid

Cited by 62 publications

References 46 publications

Numerical Investigation on the Thermal Performance of Nanofluid-Based Cooling System for Synchronous Generators

Numerical Investigation on the Thermal Performance of Nanofluid-Based Cooling System for Synchronous Generators

Experimental Testing of Thermo Physical Properties of Novel Water and Glycerol Mixture-Based Silica Nano Fluids

Thermal Convection and Solutions

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