کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7175337 | 1466377 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance of ejection refrigeration system operating with R-1234ze(E) driven by ultra-low grade heat source
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New experimental investigations of the ejection refrigeration system focusing on the ejector efficiency are presented and discussed. The refrigerant R-1234ze(E) was used as a working fluid. The system is driven with low grade heat source of temperature below 60 °C. The coefficient K, which can be considered as the overall loss coefficient is presented and discussed. On the basis of experimental results K values for various operation conditions were determined. The experiments show that for all of the cases the coefficient K exceeds 0.70. Also overall efficiency of the ejector was determined. The ejector in the described system achieves the efficiency up to 0.27 for the analysed operation conditions. Exemplary pressure and temperature distributions along the ejector are presented and discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 88, April 2018, Pages 458-471
Journal: International Journal of Refrigeration - Volume 88, April 2018, Pages 458-471
نویسندگان
Jerzy Gagan, Kamil Åmierciew, Dariusz Butrymowicz,