کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7054955 | 1458038 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Condensation heat transfer of low GWP ORC working fluids in a horizontal smooth tube
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Condensation heat transfer of low GWP ORC working fluids in a horizontal smooth tube Condensation heat transfer of low GWP ORC working fluids in a horizontal smooth tube](/preview/png/7054955.png)
چکیده انگلیسی
The objective of the current study is to conduct an experimental investigation of condensation heat transfer for the ORC (organic Rankine cycle) working fluids R245fa, Novec®649 and HFE-7000 over a wide range of parameters. Quasi-local condensation heat transfer coefficients are measured in a straight horizontal 7.75-mm-ID smooth tube with flow conditions at mass flux G = 150-700 kg (m2-s)â1, local equilibrium quality x = 0.05-0.95, and reduced pressure, Pr = 0.05-0.15. Test data reveal that the environmentally friendly fluids have lower condensation heat transfer coefficients when compared to R245fa. The 141 measured condensation heat transfer coefficients are compared to six well-known correlations. Among the six correlations verified with test data, the Shah correlation shows the best predictive performance for the three fluids tested.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 104, January 2017, Pages 718-728
Journal: International Journal of Heat and Mass Transfer - Volume 104, January 2017, Pages 718-728
نویسندگان
Goohyun Ghim, Jaeseon Lee,