کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6295164 1617163 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Emergy analysis of a small hydropower plant in southwestern China
ترجمه فارسی عنوان
تجزیه و تحلیل ایمنی یک نیروگاه برق آبی کوچک در جنوب غربی چین
کلمات کلیدی
آبی کوچک، تجزیه و تحلیل ایمنی، عملکرد زیست محیطی، عملیات نامنظم،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Although its environmental performance and sustainability remain unclear, small hydropower (SHP) has undergone rapid expansion in China. Through emergy analysis, this study aimed to assess the environmental impact and relative sustainability of a small hydroelectric plant in Guizhou Province, which is located in southwestern China, in 2010. The analysis included a comparison with similar evaluations that were conducted for large hydroelectric projects: two hydropower dams on the Mekong River in Thailand, one multipurpose dam in Korea, and the Three Gorges Dam in China. As indicated by the emergy yield ratio (EYR), environmental loading ratio (ELR), and emergy sustainability index (ESI), the overall environmental performance of the SHP system examined in this research surpassed the environmental performance of large dams. However, environmentally sensible designs do not automatically imply a promising future. The case-study SHP is on the verge of bankruptcy due to financial losses, which can be attributed to the current grid-connected cost of electricity of 0.23 CNY/kWh. The emergy exchange ratio (EER) quantitatively demonstrates that the fair price of electricity from the perspective of emergy balance is 0.4 CNY/kWh. The sensitivity analysis reveals that the inherent defect of unstable operation, which is exhibited by the SHP system, greatly affects the environmental performance of a SHP plant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Indicators - Volume 38, March 2014, Pages 81-88
نویسندگان
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