امکان‌سنجی استفاده از سیستم سرمایشی تشعشعی شبانه جهت خنک‌کاری هوای ورودی به توربین گاز

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده فنی مهندسی دانشگاه سیستان وبلوچستان

چکیده

سرمایش هوای ورودی به کمپرسور بویژه در اقلیم‌های گرم تأثیر قابل ملاحظه‌ای بر روی افزایش توان خروجی توربین‌های گاز دارد. مصرف آب در سیستم‌های سرمایش تبخیری و افشانک آب و مصرف برق و هزینه سرمایه‌گذاری در سیستم‌های تبرید جذبی و تراکمی بخار بالا است. بنابراین، هدف از پژوهش حاضر بررسی امکان استفاده از سرمایش تشعشعی شبانه جهت خنک‌کاری هوای ورودی به کمپرسور توربین گاز است. در این شیوه آب در گردش مورد استفاده جهت خنک‌کاری هوای ورودی به کمپرسور، شب هنگام و در تبادل تابش با آسمان با استفاده از کلکتورهای خورشیدی صفحه تخت فاقد شیشه خنک شده و سپس به مخزن ذخیره جهت استفاده مجدد در روز بعد باز می‌گردد. تأثیر پارامترهایی نظیر تعداد کلکتورها و نحوه آرایش کلکتورها به صورت سری یا موازی بر روی ظرفیت سرمایشی سیستم مورد بررسی قرار گرفته است. همچنین حجم مخزن مورد نیاز جهت ذخیره‌سازی آب برگشتی از کلکتورها محاسبه شده است. نتایج نشان می‌دهد که خنک‌کاری هوای ورودی به کمپرسور به مدت شش ساعت در روز نیازمند یک منبع ذخیره‌ آب با حداقل گنجایش 1000 مترمکعب است. همچنین با استفاده از 400 کلکتور با آرایش موازی و یک مخزن ذخیره 1000 مترمکعبی، میزان برق تولیدی به طور میانگین دو مگاوات ساعت افزایش می‌یابد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Feasibility Study of a Night Sky Radiative Cooling System for Cooling the Intake Air of a Gas Turbine

نویسندگان [English]

  • Mohammad Reza Sangtarash
  • Said Farahat
  • Mostafa Dehghani Mohammadabadi
Mechanical engineering department- Engineering faculty- Unversity of Sistan and Balouchestan- Zahedan- Iran
چکیده [English]

The compressor inlet air cooling, especially in hot climates, has a significant effect on the power output augmentation of the gas turbines. The water consumption in evaporative cooling and fogging systems and power consumption and investment cost in vapor absorption and compression refrigeration systems are high. So, the purpose of this article is to investigate the possibility of using the night sky radiative cooling system for cooling the intake air of the compressor. In this method, the circulating water used to cool the intake air of the compressor, at night and in the exchange of radiation with the sky, is cooled using glassless flat plate collectors and returns to the storage tank for reuse on the next day. The effect of parameters such as the number and arrangement of collectors in series or parallel on the cooling capacity is investigated. Also, the required storage tank volume for returned water from collectors is calculated. The results show that the compressor’s intake air cooling for six hours a day needs a storage tank with a minimum capacity of 1000 m3. Also, by using 400 parallel collectors and a 1000 m3 storage tank, the power production increases by an average of 2 MWh.

کلیدواژه‌ها [English]

  • Gas turbine
  • Air Intake cooling
  • Night Sky Radiative Cooling
  • Passive Cooling
  • Solar collector
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