کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4991204 | 1457104 | 2017 | 52 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermo-environmental and economic analyses of combined cycle power plants with regression modelling and optimization
ترجمه فارسی عنوان
تجزیه و تحلیل حرارتی محیطی و اقتصادی نیروگاه های ترکیبی با مدل سازی رگرسیون و بهینه سازی
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کلمات کلیدی
اگزرژی، اثرات زیست محیطی، هزینه تقسیم، پسرفت، بهینه سازی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
A 144Â MW combined cycle power plant (CCPP) based on simple and regenerative gas turbine units working on natural gas is investigated. By establishing mathematical model to simulate the power plants, thermo-environmental and economic analysis are conducted. The effects of five key parameters including compressor inlet temperature, compressor pressure ratio, gas turbine inlet temperature, pinch point temperature difference and main steam pressure are investigated on net power output, energy and exergy efficiencies, CO2 emissions, exergy destruction/loss and levelized cost. The multiple regression models are developed to determine the correlation amongst these variables. Moreover, a multi-dimensional optimization using Nelder-Mead method is carried out to find optimal operating parameters for maximum efficiency and minimum levelized cost. Results show significant impacts of gas turbine inlet temperature and compressor pressure ratio on the performance and costs. The optimum energy efficiency of simple and regenerative CCPP are in the range of 36.2-56.6% and 35-58.2%, respectively under varying operating parameters while the optimal levelized costs US$ 0.0398 and 0.037 per kWh, respectively are estimated. The combustion chamber and HRSG are the major contributors towards exergy destruction amongst all components, followed by exergy loss due to stack.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 125, October 2017, Pages 489-512
Journal: Applied Thermal Engineering - Volume 125, October 2017, Pages 489-512
نویسندگان
Abdul Ghafoor Memon, Rizwan Ahmed Memon, Samiullah Qureshi,