Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지
DOI QR코드

DOI QR Code

Flow Boiling Heat Transfer Characteristics on Sintered Microporous Surfaces in a Mini-channel

마이크로 소결 구조 채널에서의 흐름 비등 열전달 특성 연구

  • KIM, YEONGHWAN (Department of Energy Conversion Systems, Korea Institute of Machinery & Materials) ;
  • SHIN, DONG HWAN (Department of Energy Conversion Systems, Korea Institute of Machinery & Materials) ;
  • KIM, JIN SUB (Department of Energy Conversion Systems, Korea Institute of Machinery & Materials) ;
  • MOON, YOOYONG (Mechanical Design Group, Hanwha Systems) ;
  • HEO, JAEHUN (Mechanical Design Group, Hanwha Systems) ;
  • LEE, JUNGHO (Department of Energy Conversion Systems, Korea Institute of Machinery & Materials)
  • 김영환 (한국기계연구원 에너지변환기계연구실) ;
  • 신동환 (한국기계연구원 에너지변환기계연구실) ;
  • 김진섭 (한국기계연구원 에너지변환기계연구실) ;
  • 문우용 (한화시스템 기구설계팀) ;
  • 허재훈 (한화시스템 기구설계팀) ;
  • 이정호 (한국기계연구원 에너지변환기계연구실)
  • Received : 2018.01.10
  • Accepted : 2018.02.28
  • Published : 2018.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

The flow boiling heat transfer of water was experimentally investigated on plain and sintered microporous surfaces in a mini-channel. The effects of microporous coating on flow boiling heat transfer of subcooled water were investigated in a 300 mm long mini-channel with a cross section of $20{\times}10mm^2$. The test section has sufficiently long entrance length of 300 mm which provides a fully-developed flow before the channel inlet. The bottom side of the channel was heated by a copper block assembled with a high-density cartridge heater and other sides of the channel were insulated. The microporous surface was fabricated by sintering copper particles with the average particle size of $50{\mu}m$ on the top side of the copper block. Heat transfer measurement was conducted at the mass flux of $208kg/m^2s$ and the heat flux up to $500kW/m^2$. Microporous coated surface showed an earlier boiling incipience compared with plain surface regardless of the mass flux. Microporous coating were significantly attributed to local wall temperature and local heat transfer coefficient for flow boiling.

Keywords

References

  1. T. N. Tran, M. W. Wambsganss, and D. M. France, "Small Circular- and Rectangular-channel Boiling with Two Refrigerants", International Journal of Multiphase Flow, Vol. 22, No. 3, 1996, pp. 485-498. https://doi.org/10.1016/0301-9322(96)00002-X
  2. Z. Y. Bao, D. F. Fletcher, and B. S. Haynes, "Flow Boiling Heat Transfer of Freon R11 and HCFC123 in Narrow Passages", International Journal of Heat and Mass Transfer, Vol. 43, No. 18, 2000, pp. 3347-3358. https://doi.org/10.1016/S0017-9310(99)00379-8
  3. C. A. Chen, W. R. Chang, K. W. Li, Y. M. Lie, and T. F. Lin, "Subcooled Flow Boiling Heat Transfer of R-407C and Associated Bubble Characteristics in a Narrow Annular Duct", International Journal of Heat and Mass Transfer, Vol. 52, No. 13-14, 2009, pp. 3147-3158. https://doi.org/10.1016/j.ijheatmasstransfer.2009.01.027
  4. K. N. Rainey, G. Li, and S. M. You, "Flow Boiling Heat Transfer from Plain and Microporous Coated Surfaces in Subcooled FC-72", ASME Journal of Heat Transfer, Vol. 123, No. 5, 2001, pp. 918-925. https://doi.org/10.1115/1.1389465
  5. S. G. Kandlikar, "Two-phase Flow Patterns, Pressure Drop, and Heat Transfer during Boiling in Minichannel Flow Passages of Compact Evaporators," Heat Transfer Engineering, Vol. 23, No. 1, 2002, pp. 5-23. https://doi.org/10.1080/014576302753249570
  6. G. R. Warrier, V. K. Dhir, and L. A. Momoda, "Heat Transfer and Pressure Drop in Narrow Rectangular Channels", Experimental Thermal and Fluid Science, Vol. 26, No. 1, 2002, pp. 53-64. https://doi.org/10.1016/S0894-1777(02)00107-3
  7. W. Zhang, T. Hibiki, and K. Mishima, "Correlation for Flow Boiling Heat Transfer in Mini-channels", International Journal of Heat and Mass Transfer, Vol. 47, No. 26, 2004, pp. 5749-5763. https://doi.org/10.1016/j.ijheatmasstransfer.2004.07.034
  8. J. C. Chen, "A Correlation for Boiling Heat Transfer to Saturated Fluid in Convective Flow," Industrial & Engineering Chemistry Process Design and Development, Vol. 5, No. 5, 1963, pp. 322-329.
  9. S. G. Kandlikar, "Fundamental Issues related to Flow Boiling in Minichannels and Microchannels", Experimental Thermal and Fluid Science, Vol. 26, Issues 2-4, 2002, pp. 389-407. https://doi.org/10.1016/S0894-1777(02)00150-4
  10. D. Brutin, F. Topin, and L. Tadrist, "Experimental Study of Unsteady Convective Boiling in Heated Minichannels", International Journal of Heat and Mass Transfer, Vol. 46, No. 16, 2003, pp. 2957-2965. https://doi.org/10.1016/S0017-9310(03)00093-0
  11. D. Brutin, and L. Tadrist, "Pressure Drop and Heat Transfer Analysis of Flow Boiling in a Minichannel: Influence of the Inlet Condition on Two-phase Flow Stability", International Journal of Heat and Mass Transfer, Vol. 47, No. 10-11, 2004, pp. 2365-2377. https://doi.org/10.1016/j.ijheatmasstransfer.2003.11.007