کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
243788 501936 2011 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design of a novel axial impeller as a part of counter-rotating axial compressor to compress water vapor as refrigerant
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Design of a novel axial impeller as a part of counter-rotating axial compressor to compress water vapor as refrigerant
چکیده انگلیسی

A systematic investigation to understand the use of a novel axial impeller as a part of counter-rotating axial compressor to compress water vapor as refrigerant was undertaken. Blade angle was investigated at first to understand this novel impeller’s geometry. A commercial CFD package, which solves the Reynolds-averaged Navier–Stokes equations, was used to compute the complex flow field of the impeller. Two hub/shroud tip ratios with different speed ratios were numerically simulated. The numerical simulation focused on the water vapor flow from compressor impeller inlet to outlet and the overall performance level and range were predicted. The numerical investigation revealed that at hub/shroud tip ratio of 0.54, maximum pressure ratio reached about 1.24 with isentropic efficiency around 75% at its design point. Detailed investigation into flow structure showed that a serious secondary flow exists between span ranges of 30–50%. An enlargement of hub/shroud tip ratio to 0.75 showed that pressure ratio had been improved significantly. By comparing different speed ratios and hub/shroud tip ratios, the study shows potential to utilize this novel axial impeller to compress water vapor as refrigerant.

Research highlights
► Aero and thermo-dynamic performance investigation to a novel axial impeller.
► Complex flow structure study to complex axial impeller flow channel through computational fluid dynamics.
► Integration of counter rotating technology in turbomachinery refrigeration field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 88, Issue 9, September 2011, Pages 3156–3168
نویسندگان
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