کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
619586 1455061 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sand erosion of Pelton turbine nozzles and buckets: A case study of Chilime Hydropower Plant
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Sand erosion of Pelton turbine nozzles and buckets: A case study of Chilime Hydropower Plant
چکیده انگلیسی

Erosion of hydro turbine components through sand laden river water is one of the biggest problems in the Himalayan region. This problem exists for all kinds of turbines. Apart from erosion of buckets, erosion was also observed in nozzle of the Pelton turbines due to sand particles and such problem was observed in 22 MW Chilime Hydropower Plant in Nepal. Detailed studies were conducted and erosion analysis was carried out in this case study. Sieve and mineral content analyses were systematically carried out and sediment load was calculated. By doing this, erosion rate and efficiency reduction were established using already known methodology and scenario for similar hydropower plants. The flow analysis through surface of needle was established by drawing flow net diagrams. This detrimental damage led to efficiency reduction of 1.21% consequently resulting in loss of power generation. A wear rate of 3.4 mm/year was estimated for the needle and the bucket after a systematic analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 264, Issues 3–4, 4 February 2008, Pages 177–184
نویسندگان
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