بهینه‌سازی چندهدفه چرخه رانکین آلی تولید همزمان توان، آب‌‌شیرین و حرارت: تعیین سیال سه‌جزئی مناسب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان

2 سیستان و بلوچستان

3 گروه مهندسی مکانیک دانشگاه سیستان و بلوچستان

چکیده

بهبود عملکرد چرخه رانکین آلی برای تولید همزمان توان، آب شیرین و حرارت با استفاده از انرژی خورشیدی برای پاسخگویی به نیاز در مناطق دور از مرکز از اهمیت بالایی برخوردار است. یکی از عوامل مؤثر در عملکرد این چرخه، رفتار ترمودینامیکی سیال آلی آن می‌باشد. تعیین گزینه مطلوب سیال عامل که هم در چرخه توان، هم تولید آب‌ شیرین و همچنین حرارت از رفتار مناسبی برخوردار باشد از اهمیت ویژه‌ای برخوردار است. این پژوهش درصدد است تا با تحلیل، شبیه‌سازی و بهینه‌سازی یک چرخه رانکین تولید همزمان توان، آب شیرین و حرارت با استفاده از کلکتورهای سهموی خورشیدی به تعیین گزینه مطلوب بپردازد. لذا این چرخه با مخلوطی از سیالات آلی ، R152a,R600a و  R1234yfکه به ترتیب از خانواده سیالات تر، خشک و آیزنتروپیک هستند شبیه‌‌سازی می‌‌گردد. لذا ابتدا یک مطالعه‌ی پارامتری و در ادامه با استفاده از الگوریتم ژنتیک، بهینه‌سازی چندهدفه با توابع هدف توان، آب شیرین و حرارت به ازای کسر جرمی‌های مختلف از سیالات انجام شده است. نتایج نشان می‌دهد مخلوط سه‌جزئی برای دستیابی همزمان به سه هدف مناسب‌تر است در حالیکه که اگر یکی از اهداف مد نظر باشد بهتر است فقط از یکی از این سیالات با توجه به هدف مورد نظر بهره جست.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Multiobjective Optimization of a Tri-Generation Organic Rankine Cycle for Power, Freshwater and Heat: Suitable Mixture of Three Fluid

نویسندگان [English]

  • Mahdi Rahmdel 1
  • amin behzadmehr 2
  • Hamed Farzaneh 1
  • Faramarz Sarhaddi 3
1 University of Sistan and Baluchestan
3 Research Laboratory of Renewable Energies and Electromagnetic Fluids, Department of Mechanical Engineering, University of Sistan and Baluchestan, Zahedan, Iran
چکیده [English]

Improving the performance of a tri-generation organic Rankine cycle for the production of power, fresh water and heat using solar energy to respond to the needs in remote areas is very important. One of the effective factors in the performance of such a cycle is the thermodynamic behavior of its working fluid. Finding a suitable working fluid that has a good behavior on power generation, freshwater production and heat are of particular importance. This study aims to find an appropriate working fluid by analyzing, simulating, and optimizing a tri-generation Rankine cycle powered by solar parabolic trough collectors for simultaneous production of power, fresh water, and heat. The performance of this cycle is investigated with various mixtures of organic fluids R152a, R600a, and R1234yf which are categorized as wet, dry, and isotropic fluids, respectively. Therefore, first, a parametric study is conducted and followed by a multi-objective optimization for which power, fresh water, and heat are the objective functions. While the various mixture of these three working fluids are considered to be optimized. The results show that three-component mixture is more suitable for achieving three goals simultaneously, while if one of the objectives is considered, only one of these fluids should be used.

کلیدواژه‌ها [English]

  • Three-component mixture
  • Organic working fluid
  • Tri-generation Rankine cycle
  • Organic Rankine cycle
  • multi-objective optimization

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نشریه مهندسی مکانیک امیرکبیر
دوره 54، شماره 5
مرداد 1401
صفحه 1125-1148

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