نشریه مهندسی مکانیک امیرکبیر

نشریه مهندسی مکانیک امیرکبیر

بررسی تجربی استفاده از ترموالکتریک بر روی یک سیستم فتوولتائیک/حرارتی به منظور افزایش راندمان و انتقال حرارت

نوع مقاله : مقاله پژوهشی

نویسندگان
پردیس علوم و فناوری‌های نوین، دانشگاه سمنان، سمنان، ایران - دانشکده مهندسی مکانیک، دانشگاه سمنان، سمنان، ایران
چکیده
با توجه به مشکلات جهانی هم‌چون افزایش هزینه انرژی، آلودگی محیطزیست و گرمایش زمین، استفاده از انرژی‌های تجدیدپذیر مانند انرژی خورشیدی اهمیت ویژه‌ای یافته است. سیستم‌های فتوولتائیک/حرارتی با قابلیت تولید هم‌زمان برق و گرما، روشی کارآمد برای استفاده از انرژی خورشیدی هستند. این مقاله عملکرد سیستم فتوولتائیک/حرارتی مستقل و ترکیب با واحد‌های مولد ترموالکتریک، چاه حرارتی و فن در دبی‌های جرمی مختلف ۱۰۰، ۲۰۰ و ۳۰۰ سانتی‌متر مکعب بر دقیقه در شرایط آب و هوایی سمنان، ایران، بررسی شد. نتایج نشان داد که حداکثر توان تولیدی برای سیستم فتوولتائیک/حرارتی در سه دبی جرمی مختلف به ترتیب حدود 78/2 وات، 78/7 وات و 78/9 وات و با واحد‌های ترموالکتریک به ترتیب 79/1 وات، 81/7وات و 84/4 وات بود. حداکثر راندمان حرارتی برای سیستم فتوولتائیک/حرارتی در دبی ۱۰۰ سانتی‌متر مکعب بر دقیقه 31/9 درصد و راندمان الکتریکی در دبی ۳۰۰ سانتی‌متر مکعب بر دقیقه 14/1 درصد و با واحد‌های ترموالکتریک به ترتیب 327/3 درصد و 9/14 درصد بود. عدد ناسلت نیز با میانگین بهبود 28/6 درصد در سه دبی مختلف نسبت به سیستم مستقل شد. این بهبود راندمان و انتقال حرارت، چشم‌انداز روشنی را برای کاربرد این سیستم‌ها در ساختمان‌ها و اماکن تجاری برای تامین هم‌زمان برق و گرمایش فراهم می‌آورد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Experimental investigation of the use of thermoelectric on a photovoltaic/thermal system to increase efficiency and heat transfer

نویسندگان English

Payam Gol mohammad pour
Arezoo Karimabadi
Amir mohammad Jadidi
Semnan university
چکیده English

Due to global problems such as increasing energy costs, environmental pollution and global warming, the use of renewable energies such as solar energy has gained special importance. Photovoltaic/thermal (PV/T) systems with the ability to simultaneously produce electricity and heat are an efficient way to use solar energy. This paper investigated the performance of a standalone photovoltaic/thermal system and a combination with thermoelectric generator (TEG) module’s, heat well and fan at different mass flow rates of 100, 200 and 300 cm3/min under the climatic conditions of Semnan, Iran. The results showed that the maximum power output for the photovoltaic/thermal system at three different mass flow rates was about 78.2 W, 78.7 W and 9.7 W, respectively, and with thermoelectric module’s was 79.1 W, 78.81 W and 4.84 W, respectively. The maximum thermal efficiency for the photovoltaic/thermal system at a flow rate of 100 cm3/min was 31.9 % and the electrical efficiency at a flow rate of 300 cm3/min was 14.1 %, and with thermoelectric module’s it was 27.3 % and 14.9 %, respectively. The Nusselt number also improved by an average of 28.6 % at three different flow rates compared to the standalone system. This improvement in efficiency and heat transfer provides a bright prospect for the application of these systems in buildings and commercial spaces to provide simultaneous power and heating.

کلیدواژه‌ها English

Photovoltaic/Thermal (PV/T) system
Thermoelectric (TEG) module
Electrical and Thermal efficiency
Heat transfer
Solar energy
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