کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4916804 1362735 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on the performance and optimization of a scroll expander driven by compressed air
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Study on the performance and optimization of a scroll expander driven by compressed air
چکیده انگلیسی
The scroll expander has been widely studied in various energy systems for power generation and refrigeration. An experimental study of a scroll expander is carried out to examine its performance. Meanwhile, a quasi-dimensional numerical modelling is presented for simulating the working process of a scroll expander, which is verified by the experimental results. The numerical model is then used to simulate the internal flow parameters to get a full understanding of working characteristics of the expander. An optimization analysis is further conducted to examine the effect of major parameters, such as working pressure ratio, air inlet temperature, clearance size and scroll vane height to pitch ratio. The results indicate that there is an optimal pressure ratio for a scroll expander, which is between 3 and 4 for the studied expander. The change of the air inlet temperature does not affect the power generation. However, the expander volumetric and isentropic efficiencies decrease along with the increment of the inlet temperature. The clearance and vane height to scroll pitch ratio also have significant impacts on the expander working performance. The efficiency and power output of the expander should be both considered when determining expander parameters of working pressure ratio, clearance size and scroll vane height to pitch ratio for designing a scroll expander.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 186, Part 3, 15 January 2017, Pages 347-358
نویسندگان
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