کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7935137 | 1513049 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance prediction of extended surface absorber solar air collector with twisted tape inserts
ترجمه فارسی عنوان
پیش بینی عملکرد یخچال فریزر خورشیدی جذب شده در سطح گسترده با قرار دادن نوار های پیچ خورده
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کلمات کلیدی
نوار پیچ خورده، نسبت پیچ و تاب، بازده حرارتی، کارایی ترمو هیدرولیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The present work predicts the thermal and thermohydraulic performance of the extended surface absorber solar air heating collector equipped with twisted tape inserts of twist ratio Yâ¯=â¯2, 4, 6 and 8. A mathematical model has been formulated based on energy conservation equations of the various elements of the collector under consideration. The model is numerically solved using the MATLAB codes. Effects of mass flow rate, twist ratios and the solar intensity of the performance of the heater have been investigated. The results obtained are compared with the results of conventional and finned absorber solar air collector. Results conveyed that at mass flow rate of 0.025â¯kg/s, with increase in solar intensity from 500â¯W/m2 to 1000â¯W/m2, the thermal efficiency of the collector with twist ratio Yâ¯=â¯2 increases by 8.3%. Furthermore, integrating fins and twisted tape (FTTs) with the absorber plate, a maximum enhancement of 22.56% in the thermal efficiency has been achieved as compared to 11.49%, when only fins are attached. This maximum enhancement is observed with the tape with minimum twist ratio. Hence, the collector having absorber plate attached with fins and twisted tapes of twist ratio Yâ¯=â¯2 is the most efficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 169, 15 July 2018, Pages 40-48
Journal: Solar Energy - Volume 169, 15 July 2018, Pages 40-48
نویسندگان
Rajesh Kumar, Prabha Chand,