تحلیل ترمودینامیکی یک آرایش جدید تولید همزمان توان، برودت، هیدروژن و اکسیژن با استفاده از چاه‌های زمین‌گرمایی سبلان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مکانیک، دانشکده فنی و مهندسی، دانشگاه ارومیه، ارومیه، ایران

2 صنعتی ارومیه*مهندسی مکانیک

3 گروه مهندسی مکانیک، دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران

چکیده

استفاده از سیستم‌های تولید همزمان به‌ ‌سرعت در جهان در حال گسترش می‌باشد. باوجوداینکه منطقه زمین‌گرمایی سبلان یکی از مهم‌ترین مناطق زمین‌گرمایی ایران می‌باشد، مطالعه‌ای در خصوص امکان‌سنجی سیستم‌های تولیدهمزمان در این منطقه انجام نگرفته است. با هدف پر کردن خلأ موجود در این زمینه، در این مقاله امکان استفاده از یک چرخه ترکیبی جدید برای تولیدهمزمان توان، هیدروژن، اکسیژن و برودت از چاه‌های زمین‌گرمایی سبلان پیشنهاد و مورد مطالعه قرار گرفته است. چرخه پیشنهادی، ترکیبی از تبخیر آنی دومرحله‌ای از چاه‌های زمین‌گرمایی سبلان به‌عنوان منبع حرارتی، چرخه‌ی رانکین آلی به‌ عنوان مولد انرژی برای تولید هیدروژن از الکترولایزر غشاء پروتونی و سیستم تبرید جذبی تکاثره به ‌عنوان قسمت تولید سرمایش می‌باشد. ابتدا شبیه‌سازی ترمودینامیکی چرخه تولیدهمزمان با استفاده از نرم‌افزار حل معادلات مهندسی انجام شده و سپس تأثیر پارامترهای مؤثر همانند فشار جداساز اول و دوم، دمای اواپراتور رانکین، اختلاف دمای نقطه‌ی تنگش، دمای ژنراتور، نسبت کار ورودی به سیستم غشایی و دمای محیط بر عملکرد سیستم بررسی شده است. طبق بررسی پارامتریک با افزایش فشار جداساز اول و دوم مقدار بازده حرارتی و برودت افزایش می‌یابند. طبق نتایج حاصله، توان خالص تولیدی، تولید هیدروژن، سرمایش، بازده حرارتی و بازده اگزرژی به ترتیب 14749 کیلووات، 25/13 کیلوگرم بر ساعت، 10925 کیلووات، 34/22 درصد و 62/50 درصد حاصل شده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Thermodynamic Analysis of a Novel Power, Cooling, Hydrogen and Oxygen Multi-Generation Combined Cycle Based on the Sabalan Geothermal Wells

نویسندگان [English]

  • mehran abdolalipouradl 1
  • Shahram Khalilarya 2
  • Farzad Mohammadkhani 3
1 Mechanical Engineering Department, Faculty of engineering, Urmia University, Urmia, Iran
3 Department of Mechanical Engineering, Mechanical Engineering Faculty, University of Tabriz, Tabriz, Iran
چکیده [English]

The use of multi-generation systems is rapidly developing in the world. Although Sabalan geothermal field is one of the important geothermal fields of Iran, the possibility of using the multi-generation systems has not yet been performed. As an attempt to fulfill the gap in the field, a new cooling, hydrogen, oxygen, and power multi-generation cycle for using Sabalan geothermal wells is proposed and analyzed. In the proposed system, the double flash configuration from the Sabalan geothermal wells as the heat source is used. An organic Rankine cycle is used to generate power for the proton exchange membrane for hydrogen production and a LiBr-H2O absorption refrigeration system is used for cooling production. First, a simulation was done by Engineering Equation Solver software and then the effects of some design parameters, such as separators pressures, evaporator temperature, pinch point temperature difference in the Rankine evaporator, generator temperature and ambient temperature on the integrated system performance are studied. A parametric study shows that the value of the thermal efficiency and cooling continuously increases with separators' pressures. According to the results, the value of the net output power, hydrogen production, cooling and thermal and exergy efficiencies of the cogeneration system are obtained as 14739 kW, 13.25 kg/hr, 10925 kW, 22.34% and 50.62% respectively.

کلیدواژه‌ها [English]

  • Thermodynamic analysis
  • Sabalan geothermal power plant
  • Proton exchange membrane electrolysis
  • Absorption refrigeration
  • Organic Rankine cycle

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نشریه مهندسی مکانیک امیرکبیر
دوره 53، شماره 1
فروردین 1400
صفحه 135-154

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