کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5016941 | 1466381 | 2017 | 36 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental analysis of R-450A and R-513A as replacements of R-134a and R-507A in a medium temperature commercial refrigeration system
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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
This work presents the experimental evaluation of R-513A (GWPâ=â573) and R-450A (GWPâ=â547) as R-134a (GWPâ=â1301) drop-in replacements and as R-507A (GWPâ=â3987) retrofits in a commercial direct expansion refrigeration system for medium temperature applications (2â°C). The evaluation covered 24-hour tests using a single-stage cycle with semi-hermetic compressor, an electronic expansion valve customized for each refrigerant and a commercial vertical cabinet with doors placed inside a climatic chamber. The tests were performed at three water dissipation temperatures (23.3, 32.8 and 43.6â°C). Experimental results indicate that R-513A and R-450A can operate with R-134a plants, with increments in energy consumption between â1.6 to +1.2% for R-513A and from +1.3 to +6.8% for R-450A, whereas in comparison with R-507A, R-513A offered reductions in energy consumption between 4.4 to 8.2% and R-450A between 0 to 3.3%. The paper analyzes the modification of the operating pressures/temperatures and the energy indicators using the four refrigerants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 84, December 2017, Pages 52-66
Journal: International Journal of Refrigeration - Volume 84, December 2017, Pages 52-66
نویسندگان
Rodrigo Llopis, Daniel Sánchez, Ramón Cabello, Jesús Catalán-Gil, Laura Nebot-Andrés,