Application of aqueous nanofluids in a horizontal mesh heat pipe

Liu, Zhenhua; Zhu, Qunzhi

doi:10.1016/j.enconman.2010.07.001

Cited by 116 publications

(41 citation statements)

References 27 publications

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“…Based on the concepts of mixing theory for ideal gas mixtures and classical and statistical mechanisms, the density of the nanofluid ( nf ) is respectively given by Equations (3) and (4), which are related to volume fraction ( ), bulk fluid density ( bf ), and nanoparticle density ( p ) [13,15,28,29]:…”

Section: Related Theories and Calculationsmentioning

confidence: 99%

“…Nanofluid is a solidliquid mixture, and therefore the concepts of mixing theory for ideal gas mixtures, and classical and statistical mechanism are useful to estimate the nanofluid density. The density of nanoparticles is usually greater than that of the bulk liquid; therefore, according to the concepts of mixing theory for ideal gas mixtures [14][15][16][17][18][19][20] and classical and statistical mechanisms [20][21][22][23][24][25][26][27][28][29], adding nanoparticles to the bulk liquid increases the density of the bulk liquid. Similarly, estimating the specific heat of nanofluid often requires the concepts of mixing theory for ideal gas mixtures and classical and statistical mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Estimation and experimental study of the density and specific heat for alumina nanofluid

Teng

Hung

2012

Journal of Experimental Nanoscience

121

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This study analyses the density and specific heat of alumina (Al 2 O 3 )/water nanofluid to determine the feasibility of relative calculations. The Al 2 O 3 /water nanofluid was produced by the directsynthesis method with cationic chitosan dispersant served as the experimental sample, and was dispersed into three concentrations of 0.5, 1.0 and 1.5 wt.%. This experiment measures the density and specific heat of nanofluid with weight fractions and sample temperatures with a liquid density meter and a differential scanning calorimeter (DSC). To assess the availability of these equations, it then compares the experimental data with the calculated results according to the concepts of mixing theory and statistical mechanism. Comparing the calculated results of density and specific heat with the experimental data, the deviation of density fell within the range of À1.50% to 0.06% and 0.25% to 2.53%, whereas the deviation of specific heat fell within the range of À0.07% to 5.88% and À0.35% to 4.94%, respectively. Calculated results of density and specific heat show a trend of greater deviation with an increased concentration of nanofluid. However, two kinds of density and specific heat of the calculated results fall within an acceptable deviation range in this study.

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Section: Related Theories and Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimation and experimental study of the density and specific heat for alumina nanofluid

Teng

Hung

2012

Journal of Experimental Nanoscience

121

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“…It has been found that the heat pipe with 0.1% nanoparticles concentration gives efficiency 1.40 times higher than that with pure refrigerant (Naphon et.al, 2009). The impacts of aqueous copper oxide nanofluids on the thermal performance of a horizontal heat pipe working at steady subatmospheric pressures are investigated and it was reported that the copper nanofluid can significantly enhance heat transfer coefficients of both evaporator and condenser sections and also the maximum heat flux of the heat pipe (Liu and Zhu, 2011).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heat Pipe Operating Parameters by Response Surface Methodology Using Copper Nanofluid as Working Fluid

Senthilkumar¹,

Prabakaran²,

Karthikeyan³

2014

Frontiers in Heat Pipes

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The performance of a heat pipe is analysed using Response Surface Methodology (RSM) with various input parameters namely heat input, angle of inclination, filling ratio, concentration of copper nanofluid and flow rate of coolant in the condenser over the output response i.e. the thermal efficiency of the heat pipe. The experimental design is developed based on Box -Behnken design method. The influence of vital input parameters and interaction among them are investigated using analysis of variance (ANOVA). The proposed mathematical model in this study has proven to fit and in line with experimental values with a 95% confidence interval.

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“…Heat exchangers are widely used in cooling to get rid of the heat generated in electronic devices and computers and they are called ''heat pipes.'' A heat pipe is a kind of heat exchanger that has thermal conductivity and high heat transfer, 2,3 and they work in every position. The heat pipe relies on evaporation and condensation of the working fluid, which enables a heat transfer from the heat source at a high temperature to a low temperature.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior in heat pipe

Rodbumrung

Rittidech

Bubphachot

2016

Advances in Mechanical Engineering

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The aim of this study was to perform life testing and determine the effect of working fluid on the corrosion of a heat pipe with a sintered wick. The heat pipe was made from a copper tube. The inner heat pipe was filled with 99.97% pure copper powder as a dendritic for the sintering process. The heat pipe had an outer diameter of 6 mm with a length of 200 mm, and distilled water and ethanol were the working fluids. The operating temperature at the evaporator was 125°C. The analysis consisted of using a scanning electron microscope, energy dispersive X-ray spectrometry and atomic absorption spectroscopy. The results of the scanning electron microscope and energy dispersive X-ray spectrometry analysis showed that the corrosion of the heat pipe was uniform. The result of the atomic absorption spectroscopy indicated that the concentration of the copper in the ethanol as the working fluid was greater than in the distilled water as the working fluid, and the highest concentration of copper particles in the ethanol was 22.7499 ppm or 0.0409 mg after testing for 3000 h. The concentration of copper was higher when the length of the life test increased due to corrosion of the heat pipe.

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Application of aqueous nanofluids in a horizontal mesh heat pipe

Cited by 116 publications

References 27 publications

Estimation and experimental study of the density and specific heat for alumina nanofluid

Estimation and experimental study of the density and specific heat for alumina nanofluid

Analysis of Heat Pipe Operating Parameters by Response Surface Methodology Using Copper Nanofluid as Working Fluid

Corrosion behavior in heat pipe

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