کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7175432 | 1466380 | 2018 | 57 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of a novel expansion device control mechanism: Vortex control of initially subcooled flashing R134a flow expanded through convergent-divergent nozzles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Experimental investigation of a novel expansion device control mechanism: Vortex control of initially subcooled flashing R134a flow expanded through convergent-divergent nozzles Experimental investigation of a novel expansion device control mechanism: Vortex control of initially subcooled flashing R134a flow expanded through convergent-divergent nozzles](/preview/png/7175432.png)
چکیده انگلیسی
A novel expansion device refrigerant flow control mechanism called vortex control has been studied in this paper. This control mechanism is less vulnerable to clogging than conventional expansion device types since the flow control is achieved without having to adjust the cross-sectional flow area in order to achieve the desired modulation effect. Big potential is seen in applying vortex control to modulate the flow through ejector motive nozzles, because it can potentially provide flow control without sacrificing nozzle efficiency. Investigated in this paper were different nozzles flows with initially subcooled R134a. The effects of geometry variations and operating conditions were investigated experimentally. Flow visualizations were performed to gain further understanding of the complex two-phase flow in the vicinity of the nozzle throat. Maximum vortex control range of 42% has been obtained in the current study, which appears to be large enough to be suitable for numerous technical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 85, January 2018, Pages 167-183
Journal: International Journal of Refrigeration - Volume 85, January 2018, Pages 167-183
نویسندگان
Jingwei Zhu, Stefan Elbel,