• investigations on the pool boiling heat transfer and critical heat flux of zno-ethylene glycol nanofluids

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 683
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     surfactant free and fairly stable zno-ethylene glycol (eg) nanofluids are prepared using prolonged sonication (>60 h). extended period of sonication results in superior fragmentation and dispersion of zno nanoparticles, as is evident from the dls data. thermal conductivity of the prepared nanofluid displays a maximum enhancement of 40% for 3.75% volume fractions of zno loading in eg at 30 °c. the nucleate pool boiling heat transfer characteristics of zno-eg nanofluids with various loading of zno nanoparticles are measured at atmospheric pressure employing a cylindrical polished copper heater surface. the boiling heat transfer coefficient enhances with zno concentration and attains a maximum of 22% compared to that of base fluid for zno volume fraction of 1.6%. however, further loading of zno nanoparticles in eg decreases the heat transfer coefficient. critical heat flux measurements are performed with a thin constantan wire. chf value appreciably increases with increasing zno loading and displays a maximum enhancement of ∼117% for nanofluid containing 2.6% volume fractions of zno.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها