Thermal Investigation on Pin-Fins with Hexagonal & Threaded Geometry in Natural and Forced Convection

Thermal Investigation on Pin-Fins with Hexagonal & Threaded Geometry in Natural and Forced Convection

AUTHOR

  • VANGA KARUNAKAR, K. RAVI KUMAR
  • SUBMITTED

  • 2021
  • PUBLISHED MONTH

  • March-April
  • ARTICLE TYPE

  • Review
  • DOWNLOAD

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    STATICS

    ABSTRACT


    In the present work of heat transfer for hexagonal fins (1mm & 2mm)
    grooves on surface and threaded fin is addressed. The test has been performed
    on three different fin geometries having hexagonal (1mm)groove,
    hexagonal(2mm)groove, threaded fin(0.5mm)pitch and test performed by using
    a centrifugal blower, test section, heater and
    test panel and Results are obtained for temperature distribution, effectiveness,
    efficiencies at a same flow rate of air as it was conducted in forced convection
    and the same parameters considered for different values are obtained for
    natural convection with different fins as well. In this experiment for forced
    convection, the airflow rate is constant i.e, 2.3371 m/sec throughout the
    experiment. In natural convection, efficiency for the threaded fin is high with
    93.89% and effectiveness of hexagonal (2mm)depth fin is 28.11. In forced
    convection, the efficiency of the threaded fin is high with 81.83% and
    effectiveness of hexagonal (1mm)depth fin is high with 23.51 was recorded. The
    heat transfer rate is higher in natural convection is hexagonal(2mm)depth fin
    with 11.41 watts and 21.75 watts in forced convection with
    hexagonal(1mm)depth fin.
    Keywords: Pin-fins, Hexagonal fin, Threaded fin, Efficiency, Effectiveness.
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    Thermal Investigation on Pin-Fins with Hexagonal & Threaded Geometry in Natural and Forced Convection