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تحلیل ترمودینامیکی سیستم تولید توان بر مبنای پیل سوختی اکسید جامد مجهز به بهساز خارجی | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 18، دوره 53، شماره 1 (Special Issue)، فروردین 1400، صفحه 605-622 اصل مقاله (752.3 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2019.16125.6279 | ||
| نویسندگان | ||
| محرم جعفری* 1؛ محسن صادقی2؛ سید محمد سید محمودی3؛ مرتضی یاری4 | ||
| 1هیات علمی/دانشگاه تبریز | ||
| 2گروه مهندسی مکانیک، دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران | ||
| 3تبریز*مهندسی مکانیک | ||
| 4دانشگاه تبریز | ||
| چکیده | ||
| فرآیند بهسازی سه‌گانه، از نقطه نظر قابلیت استفاده مستقیم از گازهای خروجی سیستم‌های تولید توان در فرآیند بهسازی و تولید گاز سنتز با نسبت هیدروژن به مونواکسید کربن بالا بسیار حائز اهمیت می‌باشد. در تحقیق حاضر، یک سیستم تولید توان بر مبنای پیل سوختی اکسید جامد و مجهز به بهساز خارجی پیشنهاد شده و از نظر ترمودینامیکی مطالعه شده است. به منظور انجام فرآیند بهسازی خارجی متان، گازهای خروجی سیستم در بهساز بازخورانی شده و از بخار آب، دی‌اکسید کربن و اکسیژن موجود در گازهای خروجی سیستم به عنوان عوامل بهسازی استفاده شده است. تاثیر پارامتر های مهم سیستم از قبیل چگالی جریان و دمای کاری پیل سوختی اکسید جامد بر روی شاخصه‌های عملکردی سیستم از قبیل انواع ولتاژ و افت ولتاژ‌ها، دبی جرمی سوخت و آب و هوای ورودی به سیستم، توان تولیدی پیل سوختی، بازده انرژی و اگزرژی سیستم بررسی شده است. نتایج حاصل از مطالعه پارامتریک نشان می‌دهد که به ازای مقادیر پایین چگالی جریان ( 1000 آمپر بر مترمربع) و دماهای کاری بالای پیل سوختی اکسید جامد (900 درجه سلسیوس)، دبی جرمی سوخت مصرفی کاهش پیدا کرده و در نتیجه بازده انرژی و اگزرژی تا بیشینه مقدار 04/55 و 11/53 درصد سیستم افزایش می‌یابد. | ||
| کلیدواژه‌ها | ||
| سیستم تولید توان؛ پیل سوختی اکسیدجامد؛ بهساز خارجی؛ هیدروژن؛ تحلیل ترمودینامیکی | ||
| عنوان مقاله [English] | ||
| Thermodynamic Analysis of Power Generation System Based on Solid Oxide Fuel Cell With External Reforming | ||
| نویسندگان [English] | ||
| Moharram Jafari1؛ mohsen sadeghi2؛ Seyed Mohammad Seyed Mahmoudi3؛ mortaza yari4 | ||
| 1Mechanical Engineering Faculty/University of Tabriz | ||
| 2Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran | ||
| 3faculty of mechanical engineering, university of tabriz, tabriz, iran | ||
| 4faculty of mechanical engineering, university of tabriz, tabriz, iran | ||
| چکیده [English] | ||
| Due to the capability of using exhausted gases of power plants directly in the reforming process and producing high-quality syngas, the tri-reforming process is a considerable kind of reforming process. In the present study, a power generation system based on solid oxide fuel cells with specific capacity and equipped to the external reforming is proposed and investigated form the viewpoint of thermodynamics. In order to conduct the external reforming process, exhaust gases from the system including the steam, carbon dioxide and oxygen are recycled and utilized as the reforming agents in the reactor. In order to model the proposed system thermodynamically, the principals of mass and energy balance are applied in engineering equation software. Effects of such important parameters as the current density and solid oxide fuel cell operating temperature on the system performance indicators including the various voltages, fuel mass flow rate, power generation and the energy as well as the exergy efficiencies of the system are investigated. The parametric study results show that for the lower values of the current density e.g. 1000 A/m2 and higher values of the solid oxide fuel cells operating temperature e.g. 900 oC, the system energy and exergy efficiencies enhance up the maximum values of 55.04% and 53.11%, respectively. | ||
| کلیدواژه‌ها [English] | ||
| Power generation system, Solid oxide fuel cell, External reformer, Hydrogen, Thermodynamic analysis | ||
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