In present work, Al2O3/H2O nanofluid was prepared by ultrasonic oscillation. Furthermore, nanofluid flow boiling heat transfer in a vertical cube is experimentally studied, with 0.1% and 0.5% volume concentration and 20nm diameter. Some factors are under consideration, including heat flux on the heating surface (48∼289kW·m−2), pressure (0.2∼0.8MPa) and mass flow rate (400∼1100 kgm−2s−1). The results confirm that the flow boiling heat transfer of Al2O3/H2O nanofluid is improved mostly about 86% compared with pure water. And the average Nusselt number enhancement rate of nanofluid compared with deionized water is 35% in the range of this work. Moreover, the heat transfer capacity of nanofluid increase with the heat flux on the heating surface, pressure and the volume concentration of nanoparticle. It is proved that nanoparticle deposited on the heating surface by SEM observations, and TEM observations for nanoparticle confirm that nanoparticle have not obviously changed after boiling. In addition, the enhancement rate of nanofluid flow boiling heat transfer capacity increase with the pressure, and the influence of mass flow rate is negligible. In conclusion, this work is a supplement for nanofluid flow boiling heating transfer, especially for the influence of pressure.
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ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer
January 4–6, 2016
Biopolis, Singapore
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4965-1
PROCEEDINGS PAPER
Experimental Study on Al2O3/H2O Nanofluid Flow Boiling Heat Transfer Under Different Pressures
K. H. Deng,
K. H. Deng
Xi'an Jiaotong University, Xi'an, China
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J. M. Wu,
J. M. Wu
Xi'an Jiaotong University, Xi'an, China
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G. H. Su
G. H. Su
Xi'an Jiaotong University, Xi'an, China
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Y. Wang
Xi'an Jiaotong University, Xi'an, China
K. H. Deng
Xi'an Jiaotong University, Xi'an, China
B. Liu
Xi'an Jiaotong University, Xi'an, China
J. M. Wu
Xi'an Jiaotong University, Xi'an, China
G. H. Su
Xi'an Jiaotong University, Xi'an, China
Paper No:
MNHMT2016-6339, V001T02A002; 6 pages
Published Online:
March 15, 2016
Citation
Wang, Y, Deng, KH, Liu, B, Wu, JM, & Su, GH. "Experimental Study on Al2O3/H2O Nanofluid Flow Boiling Heat Transfer Under Different Pressures." Proceedings of the ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer. Volume 1: Micro/Nanofluidics and Lab-on-a-Chip; Nanofluids; Micro/Nanoscale Interfacial Transport Phenomena; Micro/Nanoscale Boiling and Condensation Heat Transfer; Micro/Nanoscale Thermal Radiation; Micro/Nanoscale Energy Devices and Systems. Biopolis, Singapore. January 4–6, 2016. V001T02A002. ASME. https://doi.org/10.1115/MNHMT2016-6339
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