تحلیل و بررسی یک سیستم جدید تولید همزمان انرژی توسط زیست‌توده به منظور بکارگیری در یک ساختمان با مصرف انرژی صفر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار و عضو هیئت علمی گروه مکانیک- دانشکده فنی- دانشگاه گیلان

2 دانشجوی دکتری مهندسی مکانیک - دانشکده مهندسی مکانیک - دانشگاه گیلان

3 گیلان*دانشکده فنی و مهندسی

چکیده

هدف از تحقیق حاضر پیشنهاد و ارزیابی یک سیستم تولید همزمان جدید برای ساختمان‌های با مصرف انرژی صفر می‌باشد. سیستم ارائه شده شامل گازی‌ساز زیست توده، موتور احتراق داخلی، چیلر جذبی دو اثره لیتیوم بروماید و آب، بویلر پشتیبان تولید آ بگرم، تانک ذخیره گاز، تانک ذخیره آبگرم مصرفی و مبدل‌های حرارتی می‌باشد. در کار حاضر ضمن ارائه یک استراتژی عملکردی برای سیستم پیشنهادی، حساسیت دستیابی به اهداف سیستم )سود خالص سالیانه، میزان تأمین تقاضاهای بار الکتریکی، سرمایش، گرمایش و آب گرم مصرفی ساختمان( به متغیرهایی نظیر ظرفیت موتور، چیلر و بویلر آ بگرم، ساعت روشن شدن موتور و حجم منبع ذخیره آب گرم، ارزیابی می‌گردد. نتایج نشان داد که افزایش توان ورودی موتور سبب کاهش تابع توازن الکتریسیته خواهد شد که می‌تواند به دستیابی به هدف ساختمان با مصرف انرژی صفر کمک کند. با افزایش توان سرمایشی چیلر جذبی در نزدیکی تقاضاهای گرمایشی، سرمایشی ساختمان، می‌توان به بیشترین سود خالص سالیانه ) 4000 دلار( دست یافت. با افزایش توان گرمایشی بویلر و حجم منبع ذخیره آ بگرم تقاضاهای سرمایشی، گرمایشی و آ بگرم مصرفی ساختمان به کلی تأمین شده است. همچنین، با تغییر در ساعت روشن شدن موتور در ساعات افزایش تقاضای الکتریسیته ) 9 تا 11 (، میزان سود سالیانه سیستم  تا 4000 دلار افزایش یافت.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A Novel Biomass-Driven Cogeneration System for Zero-Energy Buildings

نویسندگان [English]

  • Kourosh Javaherdeh 1
  • Fazel Mohammadikhah 2
  • Javad MahmoudiMehr 3
1 Instructor of Department of Mechanical Engineering, Faculty of Engineering, University of Guilan
2 Phd student of mechanical engineering - faculty of ,mechanical engineering - university of guilan
3 gulian
چکیده [English]

This study proposes and evaluates a new cogeneration system for zero-energy buildings.
The proposed system is comprised of a biomass gasifier, an internal combustion engine, a double-effect
lithium bromide-water absorption chiller, a backup boiler for hot water production, a gas storage tank,
a hot water storage tank, and two heat exchangers. The system is supposed to provide the building with
the electricity, hot water, heating and cooling requirements over the year. Besides presenting a functional
strategy for the proposed system, this study evaluates the sensitivity of the objectives of the system (i.e.,
annual actual benefit) to some main decision variables, including the capacity of engine, chiller and
boiler, the volume of hot water tank, the start-up time of the internal combustion engine. The results
demonstrate that an increase in the input power of the engine helps to achieve the goal of zero-energy
buildings. It is observed that the system is most economical when the cooling capacity of the absorption
chiller approaches the heating and cooling demands of the building. The results also indicate that the
start-up time of the combustion engine would be more influential in the case of high electricity demand
conditions.

کلیدواژه‌ها [English]

  • Biomass
  • Zero energy building
  • Economic analysis
  • Sensitivity analysis

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نشریه مهندسی مکانیک امیرکبیر
دوره 52، شماره 6
شهریور 1399
صفحه 1443-1462

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