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Heat and Mass Transfer

, Volume 55, Issue 12, pp 3603–3612 | Cite as

Subcooled boiling heat transfer characteristics of alcohol in micro-cylinder-groups

  • Zhaoliang WangEmail author
  • Xinrui Zhang
  • Jia Li
  • Guangfan Meng
  • Shuai Wang
Original
  • 54 Downloads

Abstract

Subcooled boiling of alcohol flowing through micro-cylinder-groups with different heights in aligned arrangement was investigated. Meanwhile, the outlet temperature and Nusselt number of the working fluid were obtained when the heating power was 80 W, 60 W and 40 W respectively. Subcooled boiling is divided into two parts: the partially developed stage and fully developed stage. The result showed that the outlet temperature of the fully developed stage in subcooled boiling changed rarely as the Reynolds number decreased. At the same heating power, the heights of the micro-cylinders had little effects on the outlet temperature of working fluid in the fully developed stage. However, for the same height of micro-cylinder, the fully developed stage of subcooled boiling came earlier as the heating power increased. And the Nusselt number in the fully developed stage was greater than that in the partially developed stage. Based on the regression analysis of experimental data, a correlation formula of Nusselt number for subcooled boiling in micro-cylinder-groups was established and made comparison with existing correlation.

Keywords

Micro-cylinder-groups Subcooled boiling Reynolds number Nusselt number Correlation formula 

Nomenclature

A

Heat transfer area of micro-cylinder-groups, m2

d

Diameter of micro-cylinder, m

H

Height of micro-cylinder, m

H1

Hypothetical height of micro-cylinder, m

L

Width of experimental section, m

n

Number of micro-cylinders

P

Electric power, W

p

Pressure, Pa

q

Heat flux, W/m2

SL

Cylinder longitudinal space, m

ST

Cylinder transverse space, m

T

Temperature at the bottom of the experimental section, °C

Te

Ambient temperature, °C

Tl

Feature temperature of the working fluid, °C

Ts

Saturation temperature of the working fluid, °C

ΔTSub

Undercooling, °C

Bo

Boiling number

Ja

Jacob number

Pr

Prandtl number

ε

Emissivity of copper

σ

Constant of Stefan-Boltzmann, W/(m2·K4)

λ

Thermal conductivity of copper, W/(m·K)

ηf

Fin efficiency

Φcond

Heat transferred from the heating section, W

Indices

l

liquid

s

Saturation state

Notes

Acknowledgements

We would like to thank Z. G. Liu in Energy Research Institute of Shandong Academy Sciences for the assistance on experimental system and helpful advice. We acknowledge funding supports from the National Natural Science Foundation of China (Grant No. 51876223), and the Fundamental Research Funds for the Central Universities (Grant No. 18CX06035A).

Compliance with ethical standards

Conflict of interest

We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled.

References

  1. 1.
    Tuckerman DB, Pease RFW (1981) High-performance heat sinking for VLSI. IEEE Electron Device Lett 15:126–129CrossRefGoogle Scholar
  2. 2.
    Liu ZG, Wang ZL, Zhang CW et al (2013) Flow resistance and heat transfer characteristics in micro-cylinders-group. Heat Mass Transf 49:733–744CrossRefGoogle Scholar
  3. 3.
    Guan N, Liu ZG, Zhang CW et al (2013) Influence of wall heat flux on heat transfer characteristics in micro-cylinder-groups. J Beijing Univ Technol 39(4):609–613Google Scholar
  4. 4.
    Zhang CW, Pu LM, Jiang GL et al (2014) Resistance characteristics of micro pin fins with different cross-section sharps. J Chem Eng (Beijing, China) 65(6):2024–2048Google Scholar
  5. 5.
    Liu ZG, Zhang CW, Guan N (2012) Influence of tip clearance on heat transfer efficiency in staggered micro-cylinders-group. J Chem Eng (Beijing, China) 63(4):1025–1031Google Scholar
  6. 6.
    Liu ZG, Zhang CW, Guan N et al (2011) Influence of dimension effect on convective heat transfer in micro/mini-cylinders-group at low Reynolds number. J Chem Eng (Beijing, China) 62(7):1852–1859Google Scholar
  7. 7.
    Zhang CW, Liu ZG, Guan N (2010) Influence of heat flux on forced convective heat transfer in duct with micro-cylinder-group. J Chem Eng (Beijing, China) 61(12):3080–3084Google Scholar
  8. 8.
    Guan N, Liu ZG, Zhang CW (2011) Laminar flow characteristics in in-line arranged micro-cylinder groups. J Chem Eng (Beijing, China) 62(3):664–671Google Scholar
  9. 9.
    Guan N, Liu ZG, Zhang CW (2012) Numerical investigation on heat transfer of liquid flow at low Reynolds number in micro-cylinder-groups. Heat Mass Transf 48:1141–1153CrossRefGoogle Scholar
  10. 10.
    Metzgerr DE, Berry RA, Bronson JP (1982) Developing heat transfer in rectangular duct with staggered array of short pin fin. J Heat Transf 104:700–706CrossRefGoogle Scholar
  11. 11.
    Kosar A, Mishra C, Peles Y (2005) Laminar flow across a bank of flow aspect ratio pin fins. J Fluids Eng 127:419–430CrossRefGoogle Scholar
  12. 12.
    Kosar A, Peles Y (2007) Boiling heat transfer in a hydrofoil-based micro pin fin heat sink. Int J Heat Mass Transf 50:1018–1034CrossRefGoogle Scholar
  13. 13.
    Deng C, Luo XP, Feng ZF et al (2015) Research on boiling heat transfer characteristics and visualization of refrigerant in rectangular microchannels. Int J Refrig 36(6):1–5Google Scholar
  14. 14.
    Ravigururajan TS (1998) Impact of channel geometry on two-phase flow heat transfer characteristics of refrigerants in micro channel heat exchangers. J Heat Transf 120(2):485–491CrossRefGoogle Scholar
  15. 15.
    Peng XF, Wang BX (1993) Experimental investigation on flow boiling of liquid through microchannels. J Eng Thermophys 14(3):281–286Google Scholar
  16. 16.
    Kalani A, Kandlikar SG (2012) Pool boiling heat transfer over microchannel surfaces with ethanol at atmospheric pressure. Proceedings of the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels, July 8–12, Rio Grander, Puerto Rico, ICNMM 2012–73188Google Scholar
  17. 17.
    Chan MA, Yap CR, Ng KC (2002) Pool boiling heat transfer of water on finned surfaces at near vacuum pressures. J Heat Transf 124:383–390CrossRefGoogle Scholar
  18. 18.
    Wang JT, Zhou CN et al (2016) Experimental investigation of subcooled boiling characteristics in microchannels. J Eng Thermophys 37(7):1549–1554Google Scholar
  19. 19.
    Liu B, Zhao XB, Liu Y et al (2007) An experiment study on phase-change heat transfer in rectangular mincro-capilary grooves cooling system. J Nanjing Norm Univ 7(4):45–48Google Scholar
  20. 20.
    Sun SY, Wang XM, Huang SY (2004) Investigation of subcooled boiling incipience in flow boiling heat transfer through narrow channels. J Therm Sci Technol 3(6):104–107Google Scholar
  21. 21.
    Li BC, He DH, Guo Y (2016) Investigation of onset of sub-cooled boiling prediction correlation. Nucl Tech 39(4):04502–1 – 04502-6Google Scholar
  22. 22.
    Pan LM, Xin MD, He C et al (2002) Onset of nucleate boiling in the vertical narrow rectangular channel. J Chongqing Univ 25(8):51–54Google Scholar
  23. 23.
    Yang RC, Wang YW, Tang H et al (2001) Experimental study on onset of subcooled boiling and point of net vapor generation. J Eng Thermophys 22(1):229–232Google Scholar
  24. 24.
    Park JE, Thome JR (2010) Critical heat flux in multi-microchannel copper elements with low pressure refrigerants. Int J Heat Mass Transf 53:110–122CrossRefGoogle Scholar
  25. 25.
    Mastrullo R, Mauro AW, Viscito L (2017) Experimental CHF for low-GWP fluids and R134a. Effect of the Lh/D ratio at low and high mass velocities. Int J Heat Mass Transf 109:1200–1216CrossRefGoogle Scholar
  26. 26.
    Moffat RJ (1988) Describing the uncertainties in experimental result. Exp Therm Fluid Sci 49:23–35Google Scholar
  27. 27.
    Kong LJ, Han JT, Chen CN et al (2015) An experimental investigation on subcooled boiling heat transfer in horizontal helical coil. Proceedings of the CSEE 35(11):2788–2795Google Scholar
  28. 28.
    Prodanovic V, Fraser D, Salcudean M (2002) On the transition from partial to fully developed subcooled flow boiling. Int J Heat Mass Transf 45:4727–4738CrossRefGoogle Scholar
  29. 29.
    Moles FD, Shaw JFG (1972) Boiling heat transfer to subcooled liquids under condition of forced convection. Trans Inst Chem Eng 50:76–84Google Scholar
  30. 30.
    Short BE, Raad PE, Price DC (2002) Performance of pin fin cast aluminum coldwalls Part.1: friction factor correlations. J Thermophys Heat Transf 16(3):389–396CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Zhaoliang Wang
    • 1
    Email author
  • Xinrui Zhang
    • 1
  • Jia Li
    • 1
  • Guangfan Meng
    • 1
  • Shuai Wang
    • 1
  1. 1.Energy and Power DepartmentChina University of Petroleum (East China)QingdaoChina

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