کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9690320 | 1457225 | 2005 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experiment and analysis on performance of steam-driven jet injector for district-heating system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The objective of this work is to analyze the performance of steam-driven jet injector for its design and application in the district-heating system. The paper experimentally studied the performance of a steam-driven jet injector with central steam nozzle configuration. Three injectors with throat diameters of 16 and 20 mm were tested. The main inlet parameters tested-steam pressure, water pressure and water temperature-were in the range of 0.20-0.60 MPa, 0.14-0.49 MPa and 18-68 °C, respectively. Experimental results show that the pressures were almost constant for the steam-water two-phase flow in the variable section channel of the mixing chamber tested, whose values were mainly affected by inlet steam pressure, inlet water pressure and temperature, and a shockwave appeared at the outlet of the mixing chamber. The lifting-pressure coefficient and jet coefficient measured were 1.27-2.1 and 7.63-43.65, respectively. A simplified mathematical model has been developed to predict the performance of the injector based on conservation of mass, momentum and energy as well as the present experimental data. The predictions agreed with the experimental data within ±15%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 25, Issues 8â9, June 2005, Pages 1153-1167
Journal: Applied Thermal Engineering - Volume 25, Issues 8â9, June 2005, Pages 1153-1167
نویسندگان
Jun-jie Yan, Shu-feng Shao, Ji-ping Liu, Zhao Zhang,