کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6764078 | 1431577 | 2018 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Field-testing of model helical-bladed hydrokinetic turbines for small-scale power generation
ترجمه فارسی عنوان
تست مزرعه ای از مدل توربین های هیدروکینتیکی مارپیچ برای تولید برق در مقیاس کوچک
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The vertical-axis helical-bladed hydrokinetic turbine serves as a viable source of renewable power that can extract kinetic energy of the free flowing water to generate electricity. Such helical-bladed turbines are characterized by lesser pulsation of torque and marginally favorable starting capability as compared to straight-bladed turbines. The present study aims at evaluating the performance of NACA 0020 bladed helical turbines of different solidity ratios. In-situ experiments of the developed turbines have been carried out in an open channel where the turbine with solidity ratio (Ï) of 0.38 achieves a maximum power coefficient of 0.20â¯at a tip-speed ratio (TSR) of 1.02 and an inlet water velocity of 0.87â¯m/s. The effect of Ï on the performance of different turbines is investigated at various immersion levels. For all the tested turbines, it has been observed that with the decrease of immersion levels, the power coefficient values decrease along with the optimum TSRs and this change is found to be predominant for the turbine having lowest Ïâ¯=â¯0.31. Higher starting ability has been noticed for the helical-bladed turbine with Ïâ¯=â¯0.38 in comparison to lower solidity ratio variants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 127, November 2018, Pages 158-167
Journal: Renewable Energy - Volume 127, November 2018, Pages 158-167
نویسندگان
Parag K. Talukdar, Vinayak Kulkarni, Ujjwal K. Saha,