تحلیل و ارزیابی ترمودینامیکی پیشرفته و بهبود عملکرد چرخه‌های توربین گازی با میان ‌خنک‌کننده و ریکوپراتور

نوع مقاله : مقاله علمی

نویسندگان
مصطفی زاهدزاده 1
هادی نعمتی مقدم 2
سیدمصطفی حسینعلی پور 3
1 دکتری، مهندسی مکانیک، دانشگاه علم و صنعت، تهران، ایران
2 دانشجوی دکتری، مهندسی مکانیک، دانشگاه علم و صنعت، تهران، ایران
3 استاد، مهندسی مکانیک، دانشگاه علم و صنعت، تهران، ایران
10.22034/stme.2026.555123.1182
چکیده
توربین‌های گازی امروزه به‌عنوان پرکاربردترین نوع توربو ماشین‌ها در صنایع مختلف از جمله تولید برق، نفت و گاز، نیروگاه‌های فرایندی، هوافضا، صنایع دریایی و حتی برخی کاربردهای خانگی و کوچک‌مقیاس مورد استفاده گسترده قرار می‌گیرند. این چرخه‌ها که هسته اصلی سیستم‌های تولید توان و پیشرانش محسوب می‌شوند، همواره مورد توجه پژوهشگران بوده‌اند، زیرا بهینه‌سازی آن‌ها به‌طور مستقیم منجر به کاهش هزینه‌های عملیاتی، افزایش پایداری انرژی و کاهش اثرات زیست‌محیطی می‌شود. پارامترهای کلیدی در بهبود عملکرد این چرخه‌ها شامل افزایش راندمان حرارتی، راندمان اگزرژی، کاهش مصرف مخصوص سوخت و کاهش انتشار دی‌اکسید کربن هستند. در این پژوهش، تحلیل ترمودینامیکی جامع و مقایسه عملکرد چهار پیکربندی متمایز چرخه توربین گازی شامل چرخه برایتون پایه، چرخه مجهز به بازیاب حرارتی (ریکوپراتور)، چرخه مجهز به میان ‌خنک‌کننده و چرخه ترکیبی با استفاده هم‌زمان میان ‌خنک‌کننده و ریکوپراتور با استفاده از کدنویسی در محیط متلب انجام شده است. در این تحلیل، تلفات فشار در اجزای مختلف، تغییر خواص سیال کاری از هوا به محصولات احتراق و اثر افزایش جرم سوخت بر جریان خروجی بررسی شده‌اند. نتایج شامل محاسبه دقیق راندمان حرارتی، راندمان اگزرژی، مصرف مخصوص سوخت، توان خروجی و میزان انتشار دی‌اکسید کربن برای هر چرخه بوده و با استفاده از نمودارهای T-s و P-v به‌صورت کمی و کیفی تحلیل شده‌اند. یافته‌ها نشان می‌دهند که استفاده هم‌زمان از میان ‌خنک‌کننده و ریکوپراتور می‌تواند راندمان حرارتی را تا بیش از 45‌% و راندمان اگزرژی را تا حدود 39‌% افزایش داده و مصرف سوخت و انتشار کربن را به‌طور چشمگیری کاهش دهد.
کلیدواژه‌ها
توربین گاز
چرخه برایتون
ریکوپراتور
میان خنک‌کننده
مدل‌سازی ترمودینامیکی
موضوعات

عنوان مقاله English

Advanced Thermodynamic Analysis and Performance Enhancement of Gas Turbine Cycles with Intercooler and Recuperator

نویسندگان English

Mostafa Zahedzadeh 1
Hadi Nemati Moghadam 2
Seyed Mostafa Hosseinalipour 3
1 . Ph.D, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
2 Ph.D Student, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
3 Professor, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
چکیده English

Gas turbines are widely used today as the most widely used type of turbomachinery in various industries including power generation, oil and gas, process power plants, aerospace, marine industries and even some domestic and small-scale applications. These cycles, which are considered the core of power generation and propulsion systems, have always been of interest to researchers because their optimization directly leads to reduced operating costs, increased energy sustainability and reduced environmental impacts. Key parameters in improving the performance of these cycles include increased thermal efficiency, exergy efficiency, reduced specific fuel consumption and reduced carbon dioxide emissions. In this study, advanced thermodynamic analysis and performance comparison of four distinct gas turbine cycle configurations including the basic Brayton cycle, the cycle equipped with heat recovery (recuperator), the cycle equipped with intercooler and the combined cycle of intercooler and recovery have been carried out using coding in the MATLAB environment. In this analysis, pressure losses in various components, changes in working fluid properties from air to combustion products, and the effect of increasing fuel mass on the outlet flow have been investigated. The results include accurate calculations of thermal efficiency, exergy efficiency, specific fuel consumption, output power, and carbon dioxide emission for each cycle and have been analyzed quantitatively and qualitatively using T-s and P-v diagrams. The findings show that the simultaneous use of recuperator and intercooler can increase thermal efficiency by more than 45% and exergy efficiency by about 39%, and significantly reduce fuel consumption and carbon emissions.

کلیدواژه‌ها English

Gas Turbine
Brayton Cycle
Recuperator
Intercooler
Thermodynamic Modeling
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