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بهینه‌سازی مصرف انرژی در ساختمانها با استفاده از سیستم زمین‌گرمایی عمودی (منطقۀ مطالعاتی: استان تهران) | ||
| فصلنامه سیستم های انرژی پایدار | ||
| دوره 1، شماره 1، دی 1400، صفحه 15-31 اصل مقاله (1.38 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ses.2021.88225 | ||
| نویسندگان | ||
| حسین یوسفی* 1؛ آرش کارگرزاده2؛ فاطمه جوانشیر2؛ محمد منتظری2 | ||
| 1دانشیار، گروه انرژیهای نو و محیط زیست، دانشگاه تهران، تهران | ||
| 2دانشجوی کارشناسی ارشد، گروه انرژیهای نو و محیط زیست، دانشگاه تهران، تهران | ||
| چکیده | ||
| استفاده از انرژیهای تجدیدپذیر برای افزایش امنیت انرژی در کشورها، کاهش آلودگیهای محیط زیستی و ایجاد توسعۀ پایدار مدتها است که در رأس توجه پژوهشگران است. این انرژیهای پاک شامل استفاده از انرژی خورشیدی، بادی، آبی، زیستتوده، هیدروژن، جزر و مد و زمین‌گرمایی است. ساختمانها به عنوان یکی از مصرف‌کنندگان بزرگ انرژی و تولید‌کنندگان بزرگ کربن دی‌اکسید، نیاز به حرکت به سمت توسعۀ پایدار دارند. ساختمان سبز یا ساختمان پایدار طرحی نوین است که هدف از آن بهینه‌سازی مصرف انرژی و کاهش آلایندگی ساختمانها با استفاده از انرژیهای تجدیدپذیر است. این تحقیق در نظر دارد که استفاده از سیستم زمین‌گرمایی را برای کاهش مصرف انرژی و تولید کربن دی‌اکسید در ساختمانهای استان تهران بررسی کند. در همین راستا، ساختمان دانشکدۀ علوم و فنون نوین دانشگاه تهران، واقع در استان تهران، به عنوان منطقۀ مطالعاتی انتخاب شده است. برای طراحی و مدلسازی سیستم زمین‌گرمایی برای ساختمان مورد نظر، از نرم‌افزار Designbuilder استفاده میشود. تخصص این نرم‌افزار در مدلسازی سیستمهای انرژی برای ساختمانها است و یک ابزار قدرتمند در مدلسازی ساختمان سبز است. نتایج تحقیق در این مقاله نشان میدهد استفادۀ سیستم زمین‌گرمایی برای تأمین نیاز حرارتی ساختمان، سبب حذف مصرف گاز طبیعی در ساختمان میشود. همچنین، با استفاده از پمپ حرارتی زمین‌گرمایی، برای تأمین نیاز سرمایش و گرمایش، مصرف الکتریسیته به میزان 89/77 مگاوات ساعت در سال کاهش یافته و تولید کربن نیز به میزان 83/20 تن در سال کاهش مییابد. | ||
| کلیدواژه‌ها | ||
| انرژی تجدیدپذیر؛ انرژی زمین‌گرمایی؛ توسعه‌پایدار؛ ساختمان سبز؛ نرم‌افزار Designbuilder | ||
| عنوان مقاله [English] | ||
| Optimizing Energy Consumption of Buildings Using Vertical Ground Source Heat Pumps (Case study: Tehran province) | ||
| نویسندگان [English] | ||
| Hossein Yousefi1؛ Arash Kargarzadeh2؛ Fatemeh Javanshir2؛ Mohammad Montazeri2 | ||
| 1Associate Professor, Department of new energies and environment, University of Tehran, Iran | ||
| 2Master of Science student, Department of new energies and environment, University of Tehran, Iran | ||
| چکیده [English] | ||
| Introduction Global energy demand is increasing for various reasons, including industrial development, economic growth, population growth, and lifestyle changes. On the other hand, fossil fuels cause many environmental problems, including global warming, climate change, ozone depletion, acid rain, water, and air and soil pollution. Incineration of fossil fuels since the beginning of the Industrial Revolution has emitted about 500 billion tons of carbon dioxide, about half of which remains in the atmosphere. Material and Method The faculty building consists of 4 floors. The total number of zones under the control of the faculty, which includes rooms, classrooms, workshops, laboratories, classrooms, toilets, and halls, is 152. The basement has 28 areas; the first floor has 39 areas, and the second and third floors have 34 and 51 areas, respectively. The peak load for the building's cooling needs during the year is 300 kW, and the maximum load required for heating is 155 kW. The faculty currently uses natural gas for heating and electricity for cooling systems. In this research, a vertical geothermal system is designed for this educational building. The pipes of the vertical geothermal system are of the borehole type and are wound vertically into the ground from top to bottom. By considering the standards of the systems and the fact that the maximum loads related to cooling and heating are 300 kW and 155 kW, respectively, the number of boreholes is 80. For this reason, the 80-hole geothermal heat pump system, which is also defined as standard in the software, is selected. Results and Discussion By installing the earth tube system in the building, the energy consumption of the building faces general changes. Figure 1 shows the energy consumption during a year while the geothermal system is responsible for providing the needs. As shown in Figure 1, the energy consumption of the geothermal system consists of three sections: fans, pumps, and cooling and heating sections. This whole new system uses less electricity, and by using geothermal energy, natural gas consumption is reduced to zero. Figure 9. Building energy consumption over a year (Earth tube system) The highest consumption is related to fans, and the lowest is related to pumps, equal to 92.07 and 3.36 MWh per year, respectively. The total energy consumption of this scenario is equal to 615.36 MWh per year, which produces 372.91 tons of carbon dioxide. By comparing the traditional system to this novel system, it is clear that the use of geothermal green energy has led to a significant reduction in energy consumption and carbon dioxide emissions. Total energy consumption decreased by 77.89 MW per year and carbon production by 20.83 tons. Conclusion This study aims to optimize energy consumption and reduce carbon emissions of buildings in Tehran province using a geothermal system. Therefore, the building of the Faculty of New Sciences and Technologies of the University of Tehran has been selected as the building under study. An 80-bore tube geothermal system installed vertically into the ground is designed for the building. The significant results of research and modeling are as follows: By using geothermal energy to provide the heating needs of the building, consumption of natural gas is reduced to zero. Replacing the traditional HVAC system and providing thermal comfort with the geothermal system is associated with a reduction in energy consumption of 77.89 MWh per year. The use of renewable geothermal energy reduces carbon production by 20.83 tons per year. | ||
| کلیدواژه‌ها [English] | ||
| Designbuilder Software, Geothermal energy, Green building, Renewable energies, Sustainable development | ||
| مراجع | ||
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