محبوبترین نویسندگان :
نویسندگان مقالات پربازدید :
مجله بین المللی علوم حرارتی
جزئیات رویداد
همایش ، رویداد ، ژورنال
اینستاگرام تی پی بین
حوزه های تحت پوشش رویداد

  • modeling non-adiabatic parallel flow microchannel heat exchangers

    نویسندگان :
    کلمات کلیدی :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 634
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this article analyzes parallel flow microchannel heat exchangers with non-adiabatic thermal condition imposed on the wall separating the fluids and the ambient. for purposes of analysis, a thermal model comprising of two governing equations, one for each of the fluids, is developed and analytically solved to obtain equations for calculating the axial temperature and thereby the effectiveness of both fluids. provision is provided in these equations for the temperature of the ambient interacting with the hot fluid to be different from that associated with the cold fluid. analytical equations for determining the heat transfer between the individual fluids and the respective ambient as well as that between the fluids are also developed in this paper. the temperatures/effectiveness of the fluids depend on parameters such as ntu, fluid heat capacities, thermal resistance between the individual fluid and the respective ambient and ambient temperatures. in addition, under certain operating conditions the phenomenon of temperature-cross is observed. depending on the ambient temperatures, increase in ntu will continuously improve the effectiveness of one the fluids; the effectiveness of the other fluid over the same ntu range increases before peaking and subsequent decrease. equations for determining the ntu at which this peak value in effectiveness occurs are also provided. an unbalanced flow microchannel heat exchanger with the hot fluid having the lowest heat capacity has better effectiveness than when the cold fluid has the lowest heat capacity.

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