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  • heat transfer characteristics of a two-phase closed thermosyphons using nanofluids

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1074
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the heat transfer characteristics of the heat transfer devices can be done by changing the fluid transport properties and flow features of working fluids. in the present study, therefore, the heat transfer characteristics of two-phase closed thermosyphon (tpct) with iron oxide-nanofluids are presented. the tpct is fabricated from the copper tube with the outer diameter and length of 15, 2000 mm, respectively. the tpct with the de-ionic water and nanofluids (water and nanoparticles) are tested. the iron oxide nanoparticles with mean diameter of 4–5 nm were obtained by the laser pyrolysis technique and the mixtures of water and nanoparticles are prepared using an ultrasonic homogenizer. effects of tpct inclination angle, operating temperature and nanoparticles concentration levels on the heat transfer characteristics of tpct are considered. the nanoparticles have a significant effect on the enhancement of heat transfer characteristics of tpct. the heat transfer characteristics of tpct with the nanofluids are compared with that the based fluid.

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