Experimental and Mechanism Investigation on Boiling Heat Transfer Characteristics of Alumina/Water Nanofluid on a Cylindrical Tube

Hao Zhang; Zeng-en Li; Shan Qing; Zhuangzhuang Jia; Jiarui Xu; Lin Ma; Sixian Wang; Aimin Zhang; Zhumei Luo

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자료유형: 학술저널

저자정보: Hao Zhang (Kunming University of Science and Technology) Zeng-en Li (Kunming University of Science and Technology) Shan Qing (Kunming University of Science and Technology) Zhuangzhuang Jia (Kunming University of Science and Technology) Jiarui Xu (Kunming University of Science and Technology) Lin Ma (Kunming University of Science and Technology) Sixian Wang (Kunming University of Science and Technology) Aimin Zhang (Kunming University of Science and Technology) Zhumei Luo (Kunming University of Science and Technology)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.14 No.10

발행연도: 2019.1

수록면: 19 - 31 (13page)

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Nucleate pool boiling heat transfer experiments have been conducted to nanofluids on a horizontal cylinder tube under atmospheric pressure. The nanofluids are prepared by dispersing Al2O3 nanoparticles into distilled water at concentrations of 0.001, 0.01, 0.1, 1 and 2 wt.% with or without sodium, 4-dodecylbenzenesulfonate (SDBS). The experimental results showed that: nanofluids at lower concentrations (0.001 wt.% to 1 wt.%) can obviously enhance the pool boiling heat transfer performance, but signs of deterioration can be observed at higher concentration (2 wt.%). The presence of SDBS can obviously enhance the pool boiling heat transfer performance, and with the presence of SDBS, a maximum enhancement ratio of BHTC of 69.88%, and a maximum decrease ratio of super heat of 41.12% can be found in Group NS5 and NS4, respectively. The tube diameter and wall thickness of heating surface are the influential factors for boiling heat transfer coefficient. Besides, we find that Rohsenow formula failed to predict the characteristics of nanofluids. The mechanism study shows that: the decrease of surface tension, which leads to the decrease of bubble departure diameter, and the presence of agglomerates in nanofluids are the reasons for the enhanced pool boiling heat transfer performance. At higher concentration, particle deposition will lead to the decrease of distribution density of the vaporization core, and as a result of that, the boiling heat transfer performance will deteriorate.

#Pool boiling #Al2O3/water nanofluid #boiling heat transfer coefficient #super heat #mechanism

참고문헌 (37)

참고문헌 신청

A. Sur / 2018 / Int. J. Heat Mass Transfer 120:202

M. E. Dehshali / 2018 / Appl. Therm. Eng 135:S1359431117367601

D. Chao / 2018 / Int. J. Heat Mass Transfer 119:508

J. M. Kshirsagar / 2015 / Heat Mass Transfer 51:381

D. Wen / 2005 / J. Nanoparticle Res 7:265

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