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تحلیل تأثیر انحرافات غیرایده‌آل تجهیزات بر سیستم تولید همزمان زمین‌گرمایی: ارزیابی انرژی، اگزرژی و اقتصادی | ||
| فصلنامه سیستم های انرژی پایدار | ||
| دوره 4، شماره 1، دی 1403، صفحه 69-82 اصل مقاله (1.25 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ses.2025.382572.1097 | ||
| نویسندگان | ||
| محمد سیدی1؛ فرهاد حسین‌نژاد* 2؛ کیوان فلاح3؛ یاسر رستمیان3 | ||
| 1دانشجوی دکتری، گروه مهندسی مکانیک، دانشکدۀ فنی مهندسی، دانشگاه آزاد اسلامی ساری | ||
| 2گروه مهندسی مکانیک، دانشکدۀ فنی مهندسی، دانشگاه آزاد اسلامی ساری | ||
| 3دکتری، گروه مهندسی مکانیک، دانشکدۀ فنی مهندسی، دانشگاه آزاد اسلامی ساری | ||
| چکیده | ||
| در مقالۀ حاضر نوعی سیستم تولید همزمان سیکل آنی ـ باینری زمین‌گرمایی بر پایۀ TRCC بررسی می‌شود. آب داغ تحت فشار وارد جداساز شده که در آن قسمت بخار وارد توربین بخار و قسمت مایع وارد مبدل حرارتی به منظور تولید برودت و حرارت و توان (توربین ORC) می‌شود. نتایج شبیه‌سازی با نرم‌افزار EES نشان داد مبدل حرارتی 1 و کندانسور 1 بیشترین سهم از تخریب اگزرژی را دارند. در رتبۀ بعدی، مبدل حرارتی 2 و اجکتور هستند. مشاهده شد که توربین‌های 1 و 2 بیشترین مقادیر نرخ هزینۀ سرمایه‌گذاری را دارند. این نتایج نشان داد تجهیزات مرتبط با انتقال حرارت بیشترین سهم در تخریب اگزرژی و تجهیزات مرتبط با توان بیشترین سهم را در هزینۀ سرمایه‌گذاری دارند. انحراف تجهیزات از حالت ایده‌آل سبب کاهش توان خروجی خالص نیروگاه به میزان 51 درصدی برای توربین 2 و برابر 18 درصد برای توربین 1، پمپ و کمپرسور 18 درصد می‌شود. راندمان‌های انرژی و اگزرژی نیز شامل 9 درصد کاهش برای توربین 2 و برابر 4 درصد کاهش برای توربین 1، پمپ و کمپرسور 4 درصد می‌شوند. بررسی اقتصادی یا اگزرژواکونومیک نیروگاه نشان داد کاهش راندمان توربین 2 سبب افزایش هزینۀ تولید توان از cent/kWh 5/2 به cent/kWh 8/2 شده که آن نوعی افزایش 12 درصدی را نشان می‌دهد. مقادیر افزایش هزینۀ تولید توان برای توربین 1 و پمپ 4 درصد است. | ||
| کلیدواژه‌ها | ||
| آنالیز انرژی و اگزرژی؛ اگزرژواکونومیک؛ سیستم همزمان؛ زمین گرمایی | ||
| عنوان مقاله [English] | ||
| Analyzing the Impact of Equipment Deviations from Ideal Conditions in a Geothermal CCHP System: An Energy, Exergy, and Economic Assessment | ||
| نویسندگان [English] | ||
| Mohammad Seyyedi1؛ Farhad Hosseinnejad2؛ Keyvan Fallah3؛ Yasser Rostamiyan3 | ||
| 1Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran | ||
| 2Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran | ||
| 3Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran | ||
| چکیده [English] | ||
| In this paper, a geothermal binary cycle cogeneration system based on TRCC is investigated. Pressurized hot water enters the separator, where the vapor part enters the steam turbine and the liquid part enters the heat exchanger to produce cooling, heating, and power (ORC turbine).The results showed that the irreversibility in heat transfer related equipment including condenser and heat exchanger is more than other equipment. It was observed that reducing the efficiency of turbine number 2 in the ORC cycle to 70% causes a 51% reduction in the net power output. These reduction values for turbine number 1, pump and compressor are 18%. The amount of energy and exergy efficiency decreases by 9% with the deviation of turbine number 2 from the ideal state (decrease in efficiency from 100% to 70%). This reduction is 4% for turbine number 1, pump and compressor equipment. The economic or exergeoeconomic study of the power plant showed that the decrease in the efficiency of turbine number 2 from 100% to 70% caused an increase in the cost of power generation from 2.5 cents/kwh to 2.8 cents/kwh, which shows an increase of 12%. The increase in power production cost for turbine number 1 and pump is 4%. | ||
| کلیدواژه‌ها [English] | ||
| Energy and exergy analysis, Exergeoeconomics, CCHP, Geothermal | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 26 تعداد دریافت فایل اصل مقاله: 17 |
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