کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4991978 | 1457115 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of relative humidity in the convective heat transfer over flat surface using ionic wind
ترجمه فارسی عنوان
اثرات رطوبت نسبی در انتقال حرارت کنووا بر سطح مسطح با استفاده از باد یونی
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کلمات کلیدی
باد یونی افزایش انتقال حرارت، رطوبت نسبی، کنسانتره اجباری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
This study investigates the effects of relative humidity (RH) on the generation of ionic wind and the subsequent convective heat transfer enhancement over a flat surface. The overall power consumption by the positive ionic wind was found to be 2.4 times lower than that of the negative ionic wind. Despite the differences in the power consumption, both positive and negative ionic wind displayed similar average velocity at low RH levels (30-50%), while the negative ionic wind showed slightly higher average velocity compared to the positive ionic wind at higher RH levels (60-70%). Besides velocity magnitude, the velocity profile of the ionic wind along the vertical axis was also seen to change with increase in RH. On a similar note, the heat transfer coefficients of both positive and negative ionic wind was seen to decrease with increase in RH, attributed to the decrease in velocity. A comparison of the heat transfer enhancement ratio showed that the negative ionic wind produced better enhancement than the positive ionic wind, being able to enhance the heat transfer by 1.6 compared to 1.43 of the latter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 114, 5 March 2017, Pages 554-560
Journal: Applied Thermal Engineering - Volume 114, 5 March 2017, Pages 554-560
نویسندگان
Jun Rong Lee, Ee Von Lau,