کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7056071 | 1458049 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An experimental study on heat transfer between supercritical carbon dioxide and water near the pseudo-critical temperature in a double pipe heat exchanger
ترجمه فارسی عنوان
یک مطالعه تجربی در مورد انتقال حرارت بین دی اکسید کربن فوق بحرانی و آب در نزدیکی دمای شبه بحرانی در مبدل حرارتی دو لوله
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کلمات کلیدی
دی اکسید کربن فوق بحرانی، انتقال گرما، مبدل حرارتی دو لوله، همبستگی، نیروی شناوری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Supercritical carbon dioxide (SCO2) is a promising working fluid for the cryogenic refrigeration, air-condition and heat pump systems. The present study sets up a SCO2-water test loop to study the heat transfer performance of SCO2 in a double pipe heat exchanger. The effects of SCO2-side pressure, mass flux and buoyancy force as well as water-side mass flux are investigated. It is found that the total and SCO2-side heat transfer coefficients reduce as the SCO2-side pressure increases. The peak total and SCO2-side heat transfer coefficients appear at a higher temperature than the pseudo critical temperature. The water-side mass flux has a larger effect on the total heat transfer coefficient compared to the SCO2-side mass flux in the studied cases. The contribution of buoyancy force to the heat transfer performance is large at the small SCO2-side mass flux and it becomes smaller as the SCO2-side mass flux increases. The SCO2-side pressure and water-side mass flux have little effect on the buoyancy force. A heat transfer correlation that includes the effect of buoyancy force is obtained by fitting the experimental data with genetic algorithm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 93, February 2016, Pages 379-387
Journal: International Journal of Heat and Mass Transfer - Volume 93, February 2016, Pages 379-387
نویسندگان
Ting Ma, Wen-xiao Chu, Xiang-yang Xu, Yi-tung Chen, Qiu-wang Wang,