Nuclear Engineering and Technology

  • 제52권3호
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  • Pages.530-537
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  • 2020
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Effects of included angle on pool boiling of tube array having horizontal upper tube

  • Kang, Myeong-Gie (Department of Mechanical Engineering Education, Andong National University)
  • 투고 : 2019.05.07
  • 심사 : 2019.08.29
  • 발행 : 2020.03.25
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초록

This study investigates the effect of an included angle and heat flux on heat transfer of V-shape tube array having a horizontal upper tube. The test uses two stainless steel tubes with a smooth surface submerged under the water at atmospheric pressure. The angle varies from 2° to 24°. The heat transfer coefficient gets decreasing in consequence as the angle increases. The enhancement due to the lower tube is distinct as the heat flux is lower than 60 kW/㎡, where the effect of the convective flow is dominant. The present study and the published results show a similar tendency. Although the heat transfer coefficient for the present study is smaller than the symmetry case, enhanced heat transfer is observed compared to the tube array having a lower horizontal tube as the included angle is less than 10°.

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참고문헌

  1. M.H. Chun, M.G. Kang, Effects of heat exchanger tube parameters on nucleate pool boiling heat transfer, ASME J. Heat Transf. 120 (1998) 468-476. https://doi.org/10.1115/1.2824272
  2. A. Schaffrath, E.F. Hicken, H. Jaegers, H.M. Prasser, Operation conditions of the emergency condenser of the SWR 1000, Nucl. Eng. Des. 188 (1999) 303-318. https://doi.org/10.1016/S0029-5493(99)00044-8
  3. B.U. Bae, B.J. Yun, S. Kim, K.H. Kang, Design of condensation heat exchanger for the PAFS (passive auxiliary feedwater system) of APR+ (advanced power reactor plus), Ann. Nucl. Energy 46 (2012) 134-143. https://doi.org/10.1016/j.anucene.2012.03.029
  4. S.B. Memory, S.V. Chilman, P.J. Marto, Nucleate pool boiling of a TURBO-B bundle in R-113, ASME J. Heat Transf. 116 (1994) 670-678. https://doi.org/10.1115/1.2910921
  5. L. Aprin, P. Mercier, L. Tadrist, Local heat transfer analysis for boiling of hydrocarbons in complex geometries: a new approach for heat transfer prediction in staggered tube bundle, Int. J. Heat Mass Transf. 54 (2011) 4203-4219. https://doi.org/10.1016/j.ijheatmasstransfer.2011.05.023
  6. A. Swain, M.K. Das, A review on saturated boiling of liquids on tube bundles, Heat Mass Transf. 50 (2014) 617-637. https://doi.org/10.1007/s00231-013-1257-1
  7. A. Ustinov, V. Ustinov, J. Mitrovic, Pool boiling heat transfer of tandem tubes provided with the novel microstructure, Int. J. Heat Fluid Flow 32 (2011) 777-784. https://doi.org/10.1016/j.ijheatfluidflow.2011.04.001
  8. M.G. Kang, Pool boiling heat transfer on tandem tubes in vertical alignment, Int. J. Heat Mass Transf. 87 (2015) 138-144. https://doi.org/10.1016/j.ijheatmasstransfer.2015.04.015
  9. G. Ribatski, J. Jabardo, E. Silva, Modeling and experimental study of nucleate boiling on a vertical array of horizontal plain tubes, Appl. Therm. Fluid Sci. 32 (2008) 1530-1537. https://doi.org/10.1016/j.expthermflusci.2008.04.008
  10. A. Gupta, J.S. Saini, H.K. Varma, Boiling heat transfer in small horizontal tube bundles at low cross-flow velocities, Int. J. Heat Mass Transf. 38 (1995) 599-605. https://doi.org/10.1016/0017-9310(94)00282-Z
  11. E. Hahne, J. Muller, Boiling on a finned tube and a finned tube bundle, Int. J. Heat Mass Transf. 26 (1983) 849-859. https://doi.org/10.1016/S0017-9310(83)80109-4
  12. M.G. Kang, Effects of included angle on pool boiling heat transfer of V-shape Tubes in vertical alignment, Int. J. Heat Mass Transf. 108 (2017) 901-906. https://doi.org/10.1016/j.ijheatmasstransfer.2016.12.068
  13. M.G. Kang, Pool boiling heat transfer on the inside surface of an inclined tube, JP J. Heat Mass Transf. 10 (2014) 47-61.
  14. S. Kim, B.U. Bae, Y.J. Cho, Y.S. Park, K.H. Kang, B.J. Yun, An experimental study of the validation of cooling capability for the passive auxiliary feedwater system (PAFS) condensation heat exchanger, Nucl. Eng. Des. 260 (2013) 54-63. https://doi.org/10.1016/j.nucengdes.2013.03.016
  15. M.G. Kang, Variation in pool boiling heat transfer due to included angle of tube array having horizontal lower tube, Trans. Korean Soc. Mech. Eng. B 42 (2018) 533-539. https://doi.org/10.3795/KSME-B.2018.42.8.533
  16. M.G. Kang, Local pool boiling coefficients on the outside surface of a horizontal tube, ASME J. Heat Transf. 127 (2005) 949-953. https://doi.org/10.1115/1.1929785
  17. J.P. Holman, Heat Transfer, eighth ed., McGraw-Hill, 1997.
  18. H.W. Coleman, W.G. Steele, Experimentation and Uncertainty Analysis for Engineers, second ed., John Wiley & Sons, 1999.