Experimental investigation of hydrodynamics and heat transfer characteristics of two-phase gas/liquid mist flow in tandem arranged heated spheres

Experimental investigation of hydrodynamics and heat transfer characteristics of two-phase gas/liquid mist flow in tandem arranged heated spheres

Автор: Abed Akram H., Shcheklein S.E., Pakhaluev V.M.

Журнал: Вестник Южно-Уральского государственного университета. Серия: Энергетика @vestnik-susu-power

Рубрика: Теплоэнергетика

Статья в выпуске: 2 т.19, 2019 года.

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The article presents an experimental investigation, performed to evaluate the hydrodynamics and heat transfer characteristics in tandem arranged heated rows packed inside cylindrical channel, which use air as well as air/water mist flows as operational medium. The average surface temperature has been recorded under various air main flow, water mist rate, surface heat flux and constant pitch ratio (y/d = constant). The heat transfer rate was found to increase with the water mist rate and decrease with the surface temperature. Heat transfer rate was enhanced over that for the single-phase air flow as a result of water mist evaporation and direct heat conduction by the water film generated on the heated surfaces. Overall, the heat transfer coefficient was enhanced by about 140%, 42%, and 10% respectively for the upper, middle and lower heated rows by suspending (111.68 kg m-2 hr-1) water mist rate. The frictional resistance for air/water mist flow is found to exceed that in the single-phase air flow. Compared to each water mist rate over the investigated range, the percentage enhancement in the overall heat transfer performance factor of around 116%, 35%, and 10% respectively for all the heated rows under the highest water mist rate. New experimental results obtained can be used in the development of heat exchanger modules design processes.

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Experimental investigation, mist flow, heat transfer enhancement, tandem arrangement, water film

Короткий адрес: https://sciup.org/147232726

IDR: 147232726   |   DOI: 10.14529/power190202

Список литературы Experimental investigation of hydrodynamics and heat transfer characteristics of two-phase gas/liquid mist flow in tandem arranged heated spheres

  • Hayashi Y., Takimoto A., Matsuda O. and Kitagawa T. Study on Mist Cooling for Heat Exchanger: Development of High-Performance Mist-Cooled Heat Transfer Tubes // JSME International Journal. Ser. 2, Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties, 1990, vol. 33, no. 2, pp. 333-339. DOI: 10.1299/jsmeb1988.33.2_333
  • Hayashi Y., Takimoto A. and Matsuda O. Heat Transfer from Tubes in Mist Flows // Experimental Heat Transfer, 1991, vol. 4, no. 4, pp. 291-308. DOI: 10.1080/08916159108946422
  • Lee S., Park J., Lee P. and Kim M. Heat Transfer Characteristics during Mist Cooling on a Heated Cylinder // Heat Transfer Engineering, 2005, vol. 26, no. 8, pp. 24-31. DOI: 10.1080/01457630591003718
  • Kosky P. Heat Transfer to Saturated mist Flowing Normally to a Heated Cylinder // International Journal of Heat and Mass Transfer, 1976, vol. 19, no. 5, pp. 539-543. DOI: 10.1016/0017-9310(76)90167-8
  • Kuwahara H., Nakayama W. and Mori Y. Heat Transfer from the Heated Cylinders with Various Surfaces in Air/Water Mist Flows // Heat Transfer Res., 1981, vol. 10, pp. 119.
  • Allais I., Alvarez G. and Flick D. Modelling Cooling Kinetics of a Stack of Spheres during Mist Chilling // Journal of Food Engineering, 2006, vol. 72, no. 2, pp. 197-209.
  • DOI: 10.1016/j.jfoodeng.2004.11.010
  • Allais I. and Alvarez G. Analysis of Heat Transfer during Mist Chilling of a Packed Bed of Spheres Simulating Foodstuffs // Journal of Food Engineering, 2001, vol. 49, no. 1, pp. 37-47.
  • DOI: 10.1016/S0260-8774(00)00182-5
  • Wen-Jei Y. and Clark D. Spray Cooling of Air-Cooled Compact Heat Exchangers // International Journal of Heat and Mass Transfer, 1975, vol. 18, no. 2, pp. 311-317.
  • DOI: 10.1016/0017-9310(75)90162-3
  • Treble, M. An Approximate Calculation of Heat Transfer during Flow of an Air-Water Mist along a Heated Flat Plate // International Journal of Heat and Mass Transfer, 1981, vol.24, no.4, pp. 749-755.
  • DOI: 10.1016/0017-9310(81)90018-1
  • Song C.H., Lee D.Y., and Ro S.T. Cooling Enhancement in an Air-Cooled Finned Heat Exchanger by Thin Water Film Evaporation // International Journal of Heat and Mass Transfer, 2003, vol. 46, no. 7, pp. 1241-1249.
  • DOI: 10.1016/S0017-9310(02)00405-2
  • Deshmukh A. Design, Development and Fabrication of a Mist Spray Direct Evaporative Cooling System and Its Performance Evaluation // Journal of Thermal Engineering, 2019, pp. 42-50.
  • DOI: 10.18186/thermal.513053
  • Wang T. and Dhanasekaran T. Calibration of a Computational Model to Predict Mist/Steam Impinging Jets Cooling With an Application to Gas Turbine Blades // Journal of Heat Transfer, 2010, vol. 132, no. 122201.
  • DOI: 10.1115/1.4002394
  • Bian Q., Wang J., Chen Y., Wang Q. and Zeng M. Numerical Investigation of Mist/Air Impingement Cooling on Ribbed Blade Leading-Edge Surface // Journal of Environmental Management, 2017, vol. 203, pp. 1062-1071.
  • DOI: 10.1016/j.jenvman.2017.05.052
  • Kudo T., Sekiguchi K., Sankoda K., Namiki N. and Nii S. Effect of Ultrasonic Frequency on Size Distributions of Nanosized Mist Generated by Ultrasonic Atomization // Ultrasonics Sonochemistry, 2017, vol. 37, pp. 16-22.
  • DOI: 10.1016/j.ultsonch.2016.12.019
  • Kumari N., Bahadur V., Hodes M., Salamon T., Kolodner P., Lyons A. and Garimella S. Analysis of Evaporating Mist Flow for Enhanced Convective Heat Transfer // International Journal of Heat and Mass Transfer, 2010, vol. 53, pp. 3346-3356.
  • DOI: 10.1016/j.ijheatmasstransfer.2010.02.027
  • Jiang G., Shi X., Chen G. and Gao J. Study on Flow and Heat Transfer Characteristics of the Mist/Steam Two-Phase Flow in Rectangular Channels with 60 deg. Ribs // International Journal of Heat and Mass Transfer, 2018, vol. 120, pp. 1101-1117.
  • DOI: 10.1016/j.ijheatmasstransfer.2017.12.082
  • Manglik R. and Bergles A. Fully Developed Laminar Heat Transfer in Circular-Segment Ducts with Uniform Wall Temperature // Numerical Heat Transfer, 1994, Part A: Applications, vol. 26, no. 5, pp. 499-519.
  • DOI: 10.1080/10407789408956006
  • Kline S.J. and McClintock F.A. Describing Uncertainties in Single-Sample Experiments // Mechanical Engineering, 1953, vol. 75, no. 1, pp. 3-8.
  • Abed A. and Shcheklein S. Investigation of Hydrodynamic Characteristics of Laminar Flow Condition Around Sphere Using PIV System // Journal of Physics: Conference Series, 2018, vol. 1015, no. 032001.
  • DOI: 10.1088/1742-6596/1015/3/032001
  • Kotsev T. Viscous Flow Around Spherical Particles in Different Arrangements // MATEC Web of Conferences, 2008, vol. 145, no. 03008.
  • DOI: 10.1051/matecconf/201814503008
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