A comprehensive review on pool boiling of nanofluids

Çiloğlu, Doğan; Bölükbaşi, Abdurrahim

doi:10.1016/j.applthermaleng.2015.03.063

Cited by 140 publications

(48 citation statements)

References 109 publications

(162 reference statements)

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“…The passive measures previously utilized to enhance the CHF of nucleate boiling can be generally categorized into two types: First is through changes in the thermophysical properties of the boiling fluid, such as the addition of different surfactants or the employment of different nanofluids; [4][5][6][7] and second is through modifications to the heated surface. In this latter case, a variety of methods have been proposed, such as the fabrication of nano-or micro-scale functional structures, [8][9][10][11][12] deposited nanoparticle layers, [13][14][15][16][17][18] atomic layer deposition, [19][20] micro/nano porous coatings [21][22][23][24][25] and hybrid wettability treatments.…”

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confidence: 99%

Pool boiling with high heat flux enabled by a porous artery structure

Bai

Zhang

Lin

et al. 2016

Applied Physics Letters

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A porous artery structure utilizing the concept of “phase separation and modulation” is proposed to enhance the critical heat flux of pool boiling. A series of experiments were conducted on a range of test articles in which multiple rectangular arteries were machined directly into the top surface of a 10.0 mm diameter copper rod. The arteries were then covered by a 2.0 mm thickness microporous copper plate through silver brazing. The pool wall was fabricated from transparent Pyrex glass to allow a visualization study, and water was used as the working fluid. Experimental results confirmed that the porous artery structure provided individual flow paths for the liquid supply and vapor venting, and avoided the detrimental effects of the liquid/vapor counter flow. As a result, a maximum heat flux of 610 W/cm2 over a heating area of 0.78 cm2 was achieved with no indication of dryout, prior to reaching the heater design temperature limit. Following the experimental tests, the mechanisms responsible for the boiling critical heat flux and performance enhancement of the porous artery structure were analyzed.

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confidence: 99%

Pool boiling with high heat flux enabled by a porous artery structure

Bai

Zhang

Lin

et al. 2016

Applied Physics Letters

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“…Where β 0 , β 1 ,…, β k are unknown constant coefficient and e is random error with expected value E(e)=0 and analysis of variance Var(e)=σ 2 . The results of the regression model and statistical analysis were carried out using DPS software.…”

Section: Uniform Designmentioning

confidence: 99%

“…Modifications like microscale pin fins, microchannels and microporous coatings on the boiling surface have proven to be effective methods in improving the heat transfer coefficient (HTC) [1]. Recently, nanostructure coatings on the surface, to increase the roughness and the active nucleation site density, have gained more and more attention not only because of the increase of HTC but also because of the delay of critical heat flux (CHF) [2,3].…”

Section: Introductionmentioning

confidence: 99%

Uniform design for the optimization of Al2O3 nanofilms produced by electrophoretic deposition

Song

Quan

et al. 2016

Surface and Coatings Technology

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Surface modification by means of nanostructures is of interest to enhance boiling heat transfer in various applications including the organic Rankine cycle (ORC). With the goal of obtaining rough and dense aluminum oxide (Al 2 O 3 ) nanofilms, the optimal combination of process parameters for electrophoretic deposition (EPD) based on the uniform design (UD) method is explored in this paper. The detailed procedures for the EPD process and UD method are presented. Four main influencing conditions controlling the EPD process were identified as: nanofluid concentration, deposition time, applied voltage and suspension pH. A series of tests were carried out based on the UD experimental design. A regression model and statistical analysis were applied to the results. Sensitivity analyses of the effect of the four main parameters on the roughness and deposited mass of Al 2 O 3 films were also carried out.The results showed that Al 2 O 3 nanofilms were deposited compactly and uniformly on the substrate. Within the range of the experiments, the preferred combination of process -4 g/cm 2 , respectively. A verification experiment was carried out at these conditions and gave values of roughness and deposited mass within 8% error of the expected ones as determined from the UD approach. It is concluded that uniform design is useful for the optimization of electrophoretic deposition requiring only 7 tests compared to 49 using the orthogonal design method.

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“…Investigation into the nanofluids phase change phenomena and 58 complicated heat transfer mechanisms have intensively been performed over the past decade. 59 Most researchers have found that the mechanisms of pool boiling heat transfer of nanofluids are 60 different from those of conductive and convective heat transfer of nanofluids [11][12][13]. Yang and 61 Maa [14] are possibly the first to conduct pool boiling experiments using nanofluids.…”

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confidence: 99%

“…Numerous researchers 39 have conducted investigation into the heat transfer enhancement including single phase and 40 phase change heat transfer using nanofluids [9][10][11][12][13][14][15][16][17][18][19][20]. In particular, the nucleate boiling heat 41 transfer characteristics in confined spaces are of great interest to removing high heat flux in the 42 microelectronic system, laser devices, green and highly efficient lighting with limited cooling 43 spaces.…”

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confidence: 99%