طراحی و ارزیابی یک سیستم نوین تولید چندگانه بر پایه سوخت بیوگاز با بازیابی حرارتی هوشمند

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه محقق اردبیلی

2 محقق اردبیلی-فنی و مهندسی- مهندسی مکانیک

3 گروه مکانیک دانشگاه محقق اردبیلی

چکیده

در این مطالعه، یک سیستم تولید چندگانه بر پایه سوخت بیوگاز ارائه شده است. به این منظور ابتدا عملکرد سیستم از دیدگاه قانون اول ترمودینامیک شبیه سازی شده و در ادامه به منظور مشخص کردن کارآیی هر زیر سیستم و میزان تلفات و هدررفت انرژی، عملکرد سیستم از دیدگاه قانون دوم مورد بررسی قرار گرفته و همچنین آنالیز اقتصادی اگزرژواکونومویک به کار رفته است. در ادامه به منظور نشان‌دادن تأثیر استفاده از موتور استرلینگ، عملکرد  سیستم در دو حالت مختلف با موتور استرلینگ و بدون آن بررسی شده و در نهایت مطالعه پارامتری جامعی به منظور پی بردن به رفتار معیارهای عملکردی سیستم با پارامتر‌های طراحی انجام شده است. نتایج نشان می‌دهد که سیستم ارائه شده در زمان کار با موتور استرلینگ، به ترتیب توانایی تولید kW986، kW 137/5، 8/39 و kg/h 2/96 توان الکتریکی، سرمایش، آب شیرین و هیدروژن خالص را دارد و در این حالت بازده انرژی و اگزرژی سیستم نسبت به حالت بدون موتور استرلینگ حدود 2/96% و 7/89% بهبود یافته به ترتیب برابر با 37/3% و 32/08% محاسبه شده‌اند. همچنین در این حالت هزینه تولید محصولات سیستم برابر با kWh 0/1086 / $است، که در حالت بدون موتور استرلینگ برابر با kWh0/0998 / $بوده و چیزی در حدود 8/1% کاهش یافته است.  

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Development and Analysis of a Novel Multi-Generation System Fueled by Biogas with Smart Heat Recovery

نویسندگان [English]

  • Maryam Hassanzadeh 1
  • Hadi Ghaebi 2
  • Milad Fili 3
1 UMA
2 محقق اردبیلی-فنی و مهندسی- مهندسی مکانیک
3 Mechanical Engineering Department
چکیده [English]

This paper presents a novel multi-generation system based on biogas fuel for simultaneous production of goods such as electricity, cooling, freshwater, and hydrogen using smart heat recovery of combustion gases. The performance of the proposed system is investigated in terms of the first and second laws of thermodynamics. Also, to acquire a comprehensive evaluation of operation costs, an exergoeconomic analysis has been performed. Furthermore, a comprehensive parametric study has been conducted to understand the behavior of the system performance parameters with the design parameters. In the following, to show the superiority of using a Stirling engine, the investigation of the present study is performed under two different scenarios. The proposed system could produce 986 kW, 137.5 kW, 8.39 m3/h, and 2.96 kg/h, net output electricity, cooling load, distilled water, and hydrogen while working with the Stirling engine. In this case, the energy and exergy efficiencies of the proposed system are obtained at 37.3% and 32.08%, which are improved by about 2.96% and 7.89%, respectively. In terms of cost metrics, the total unit cost of the products is about 0.1086$/kWh which has increased by 8.1% compared to the non-sterling engine mode.

کلیدواژه‌ها [English]

  • Gas turbine
  • Biogas
  • West heat recovery
  • Multi-generation
  • Stirling engine

مراجع

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نشریه مهندسی مکانیک امیرکبیر
دوره 54، شماره 7
مهر 1401
صفحه 1673-1700

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