کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10122805 | 1642855 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of a novel solar-driven refrigeration system with ejector
ترجمه فارسی عنوان
بررسی یک سیستم رفرش خورشیدی جدید با موتور
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کلمات کلیدی
خنک کننده خورشیدی، انژکتور بهینه سازی، جمع کننده لوله تخلیه شده، راندمان اگزرژی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
The objective of this paper is the investigation of a novel solar-driven refrigeration system energetically and exergetically. The investigated system is driven by evacuated tube collectors and it includes the following devices: generator, turbine, ejector, evaporator, compressor, condenser, throttling valves and a gearbox. The examined system is compared with a conventional system without turbine, compressor and gearbox. In every case, the system is optimized in order to compare the optimum possible designs. Various working fluids are tested for both the systems and finally R141b is found to be the most appropriate choice. For the typical operation case with condenser temperature at 40â¯Â°C and evaporator temperature at 0â¯Â°C in steady-state conditions, the novel configuration has system coefficient of performance 0.1692 and the conventional system 0.06455, while the system exergy efficiency of the novel system is 1.664% and of the conventional system 0.6349%. Moreover, for the same operating scenario in dynamic conditions, it is found that the novel configuration presents the mean system coefficient of performance equal to 0.09157 while the conventional 0.02786. The results clearly indicate that the suggested system has higher performance than a conventional refrigeration system with an ejector device.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermal Science and Engineering Progress - Volume 8, December 2018, Pages 284-295
Journal: Thermal Science and Engineering Progress - Volume 8, December 2018, Pages 284-295
نویسندگان
Evangelos Bellos, Ioannis-Christos Theodosiou, Loukas Vellios, Christos Tzivanidis,