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آنالیز ترمودینامیکی شبیه‌ساز کلکتور خورشیدی صفحه تخت و بهینه‌سازی متغیرهای فرآیند | ||
| مهندسی بیوسیستم ایران | ||
| مقاله 5، دوره 51، شماره 1، فروردین 1399، صفحه 51-61 اصل مقاله (957.23 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2019.287200.665210 | ||
| نویسندگان | ||
| محمد آهمند1؛ فاروق شریفیان* 2؛ علی محمد نیکبخت1؛ وحید رستم پور1؛ ادریس رحمتی3 | ||
| 1گروه مهندسی مکانیک بیوسیستم، دانشگاه ارومیه، ارومیه، ایران | ||
| 2استادیار گروه مهندسی مکانیک بیوسیستم- دانشگاه ارومیه | ||
| 3گروه مهندسی مکانیک بیوسیستم، دانشگاه تربیت مدرس، تهران، ایران | ||
| چکیده | ||
| در تحقیق حاضر تحلیل انرژی و اکسرژی شبیه‌ساز کلکتور خورشیدی صفحه تخت مجهز به ناهمواری Inclined Broken Rib بر اساس داده‌های تجربی در یک مدار باز و همچنین بهینه‌سازی شرایط کارکرد سامانه صورت گرفته است. آزمایش‌ها در نه سطح دبی جرمی (kg/s 03/0، 04/0، 05/0، 06/0، 07/0، 08/0، 09/0، 10/0 و 11/0)، پنج سطح شار حرارتی (W/m^21000، 1100، 1200، 1300 و 1400) و سه سطح دمای هوای محیط (°C 20، 25 و 30) انجام شد. نتایج نشان داد که بیشترین و کمترین مقدار بازده انرژی به ترتیب در تیمارهای با دمای محیط °C20 و 25 ، دبی جرمی kg/s11/0 و شار حرارتی W/m^21000 و 1400 با مقادیر 8/49 و 3/0 درصد به دست آمد. همچنین بیشترین و کمترین مقدار بازده اکسرژی به ترتیب برابر 75/5 و 607/0 درصد در تیمارهای با دمای محیط °C20 و 30 ، دبی جرمی kg/s11/0 و 03/0 و شار حرارتی W/m^21000 محاسبه شد. روش سطح پاسخ برای بهینه کردن شرایط کارکرد جمع‌کننده خورشیدی به کار گرفته شد. شرایط بهینه در دمای محیط °C20، نرخ جریان جریان جرمی kg/s11/0 و شار حرارتی W/m^21000 به دست آمد. در این شرایط بهینه، بازده انرژی و اکسرژی به ترتیب 08/42 و 76/5 درصد با مطلوبیت 92/0 به دست آمد. | ||
| کلیدواژه‌ها | ||
| "بازده‌ی اکسرژی"؛ "بازده انرژی"؛ "انرژی خورشیدی"؛ "روش سطح پاسخ" | ||
| عنوان مقاله [English] | ||
| Thermodynamic Analysis of Flat Plate Solar Collector Simulator and Optimization of Process Variables | ||
| نویسندگان [English] | ||
| Mohammad Ahmand1؛ Faroogh Sharifian2؛ Ali Mohammad Nikbakht1؛ Vahid Rostampour1؛ Edris Rahmati3 | ||
| 1Department of Mechanical Engineering of Biosystems, Urmia University, Urmia, Iran | ||
| 2Assistant Prof., Mechanical Engineering of Biosystems, Urmia University | ||
| 3Department of Mechanics of Biosystem Engineering, Tarbiat modares University, Tehran, Iran. | ||
| چکیده [English] | ||
| In this paper the energy and exergy analysis of flat plate solar collector simulator equipped with Inclined Broken Rib roughness was investigated based on experimental data in open circuit as well as optimizing system operating conditions. The experiments were carried out with nine levels of mass flow rates (0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10 and 0.11 kg/s), five levels of heat flux (1000, 1100, 1200, 1300 and 1400 W/m^2) and three levels of ambient air temperature (20, 25 and 30 °C). The results showed that the highest and lowest values of energy efficiency were found 49.8 and 0.3%, in treatments with ambient temperature of 20 and 25 °C, mass flow rate of 0.11 kg/s and heat flux of 1000 and 1400 W/m^2, respectively. Also, the highest and lowest exergy efficiency were calculated 5.75 and 0.607% in treatments with ambient temperature of 20 and 30 °C, mass flow rate of 0.11 kg/s and 0.03 and heat flux of 1000 W/m^2, respectively. The response surface methodology was employed to optimize solar collector operating conditions. Optimum operating conditions were found to be anambient temperature of 20 °C, mass flow rate of 0.11 kg/s and heat flux of 1000 W/m^2. At this optimum condition, the energy and exergy efficiency were found to be 42.08 and 5.76%, respectively at a desirability level of 0.92. | ||
| کلیدواژه‌ها [English] | ||
| "Exergy efficiency", "Energy efficiency", "Solar Energy", "Response Surface Methodology" | ||
| مراجع | ||
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