Experimental study of nucleate pool boiling heat transfer of water by surface functionalization with crystalline TiO2 nanostructure

Das, Sudev; Saha, Biswajit; Bhaumik, Swapan

doi:10.1016/j.applthermaleng.2016.11.135

Cited by 85 publications

(21 citation statements)

References 40 publications

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“…Many opportunities for the thermodynamic processes provide excellent control by introducing crystalline and nanostructured surfaces at the boiling interface of liquid and solid. Organic and inorganic phase change materials have obtained extensive attention in recent years due to their higher latent heat, suitable phase‐transition temperature, and stable physical and chemical properties . The use of newly developed materials or structures combined with pool boiling to increase heat transfer developing, and nano‐surface can significantly improve the boiling heat transfer effect .…”

Section: Introductionmentioning

confidence: 99%

“…Different oxide materials such as as alumina, titania, silica, zinc oxide and CuO have been used as a functional surface of the coating . In a hydrothermal environment, the TiO 2 micro/nanostructured surface has highly stable structure . Wu et al have shown that pool boiling was enhanced on TiO 2 coating surfaces with film thickness in nanometer scale, and heat transfer inhibiting was also observed with certain coating thickness.…”

Section: Introductionmentioning

confidence: 99%

“…Wu et al have shown that pool boiling was enhanced on TiO 2 coating surfaces with film thickness in nanometer scale, and heat transfer inhibiting was also observed with certain coating thickness. Das et al have found that the TiO 2 nanostructure modified surface was applied to the study of nucleation pool boiling to improve the heat transfer coefficient and the boiling heat transfer coefficient increases significantly with the thickness of the TiO 2 coating increases.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO₂ nanostructure

Zhang

Wang

et al. 2019

Can J Chem Eng

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A titanium plate with titanium dioxide nanotube was prepared with the anodic oxidation process. The heat transfer through this plate was studied with quantitative heptanol solution as self-rewetting solution. The microstructure of this nano-structure surface was characterized by SEM and the surface tension of the self-rewetting solution on it was measured by the static contact angle. The results indicated that the heat transfer coefficient (HTC) and the critical heat flux (CHF) were significantly improved with the increasing concentration of heptanol. In the 0.1 mass% heptanol solution, the best heat transfer enhancement effect was obtained. The HTC is 22.46 kW Á m À2 Á K À1 and CHF is 536.64 kW Á m À2 , which were increased by 121 and 62.9 % more than those in the distilled water. According to the experimental phenomenon and mechanism analysis, the surface of the nanotube has a more effective vaporization core, greater roughness, and better wettability. Combined with the special double surface tension gradient characteristic of the self-wetting solution, the hot and cold liquid forms a microcirculation and the synergistic superposition of the driving force strengthens. The system can produce tiny and fine bubbles under low superheat, detach quickly, transfer heat quickly, and perform secondary wetting in time to achieve synergistic enhanced boiling heat transfer.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO₂ nanostructure

Zhang

Wang

et al. 2019

Can J Chem Eng

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“…Das et al [45] checked the effects of surface modification on nucleate boiling heat transfer. In experimentation, Cu surface is coated with crystalline TiO 2 nanostructure.…”

Section: Application Of Tio 2 Nanofluid In Nucleate Pool Boilingmentioning

confidence: 99%

Heat Transfer Applications of TiO2 Nanofluids

Ali¹,

Sajid²,

Arshad³

2017

Application of Titanium Dioxide

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To achieve acme heat transfer is our main disquiet in many heat transfer applications such as radiators, heat sinks and heat exchangers. Due to furtherance in technology, requirement for efficient systems have increased. Usually cooling medium used in these applications is liquid which carries away heat from system. Liquids have poor thermal conductivity as compared to solids. In order to improve the efficiency of system, cooling medium with high thermal conductivity should be used. Quest to improve thermal conductivity leads to usage of different methods, and one of them is addition of nanoparticles to base liquid. Application of nanofluids (a mixture of nanoparticles and base fluid) showed enhancement in heat transfer rate, which is not possible to achieve by using simple liquids. Different researchers used TiO 2 nanoparticles in different heat transfer applications to observe the effects. Addition of titanium oxide nanoparticles into base fluid showed improvement in the thermal conductivity of fluid. This chapter will give an overview of usage of titanium oxide nanoparticles in numerous heat transfer applications.

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“…A lot of research has been conducted on the preparation methods of TiO 2 nanofluids because of its wide industrial and commercial applications in almost every sphere of life particularly in electronic devices [8,9], heat sinks [10][11][12][13][14][15][16], solar energy [17][18][19][20][21], the automotive industry [22][23][24][25][26][27], heat exchangers [28][29][30][31][32][33] and nucleate pool boiling [34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Preparation Techniques of TiO2 Nanofluids and Challenges: A Review

et al. 2018

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Titanium dioxide (TiO 2 ) has been used extensively because of its unique thermal and electric properties. Different techniques have been used for the preparation of TiO 2 nanofluids which include single-step and two-step methods. In the natural world, TiO 2 exists in three different crystalline forms as anatase, brookite, and rutile. Nanoparticles are not used directly in many heat transfer applications, and this provides a major challenge to researchers to advance towards stable nanofluid preparation methods. The primary step involved in the preparation of nanofluid is the production of nano-sized solid particles by using a suitable technique, and then these particles are dispersed into base fluids like oil, water, paraffin oil or ethylene glycol. However, nanofluid can also be prepared directly by using a liquid chemical method or vapor deposition technique (VDT). Nanofluids are mostly used in heat transfer applications and the size and cost of the heat transfer device depend upon the working fluid properties, thus, in the past decade scientists have made great efforts to formulate stable and cost-effective nanofluids with enhanced thermophysical properties. This review focuses on the different synthesis techniques and important physical properties (thermal conductivity and viscosity) that need to be considered very carefully during the preparation of TiO 2 nanofluids for desired applications.

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Experimental study of nucleate pool boiling heat transfer of water by surface functionalization with crystalline TiO2 nanostructure

Cited by 85 publications

References 40 publications

Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO₂ nanostructure

Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO₂ nanostructure

Heat Transfer Applications of TiO2 Nanofluids

Preparation Techniques of TiO2 Nanofluids and Challenges: A Review

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Experimental study of nucleate pool boiling heat transfer of water by surface functionalization with crystalline TiO2 nanostructure

Cited by 85 publications

References 40 publications

Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO2 nanostructure

Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO2 nanostructure

Heat Transfer Applications of TiO2 Nanofluids

Preparation Techniques of TiO2 Nanofluids and Challenges: A Review

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Product

Resources

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Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO₂ nanostructure

Experimental study of nucleate pool boiling heat transfer of self‐rewetting solution by surface functionalization with TiO₂ nanostructure