کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4926539 1431596 2017 44 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermohydraulic performance analysis of an arc shape wire roughened solar air heater
ترجمه فارسی عنوان
تجزیه و تحلیل عملکرد ترمو هیدرولیک از یک سیم شکل قوس خورشیدی گرم کن خورشیدی
کلمات کلیدی
زبری مصنوعی، مجرای هوای خورشیدی، زبری سیم کارایی موثر، بازده حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
In the present paper, a comprehensive investigation on thermal and thermohydraulic performance of solar collector for heating air having circular wire rib roughness in the form of arc shape on the back side of absorber plate, has been carried out. A mathematical model incorporating the operating and system parameters has been developed and the results have been computed by using MATLAB for specified range of these parameters. A conventional solar air heater working under similar conditions has also been considered for the purpose of comparison. At rib height-to-duct hydraulic diameter ratio = 0.0422 and flow-attack-angle = 0.3333 the values of maximum thermal and effective efficiencies were found to be 79.84% and 75.24% respectively for the range of parameters used in the investigation. Further, the thermal efficiency, obtained in the present work has been compared with those obtained for other roughness geometries available in the literature for common roughness parameters and operating parameters to validate the results. Optimization of different parameters of wire roughness for optimum thermohydraulic (effective) efficiency of solar air heater duct has also been investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 108, August 2017, Pages 598-614
نویسندگان
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