کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10294560 | 512614 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transient test of a solar air heater with a compound parabolic concentrator
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Transient test of a solar air heater with a compound parabolic concentrator Transient test of a solar air heater with a compound parabolic concentrator](/preview/png/10294560.png)
چکیده انگلیسی
A method for measuring the performance parameters of a solar thermal collector under non-steady conditions has been applied to an air heater with a truncated compound parabolic concentrator having an aperture area of 1.44Â m2 and a flat absorber with concentration ratio three. This type of collector was chosen in order to obtain high air temperatures in a tropical climate where the proportion of diffuse solar radiation is high. The parameters found were the optical efficiency, the linear and nonlinear heat loss coefficients, and the effective heat capacity. These parameters were determined individually in separate experiments, some with and some without solar radiation falling on the collector. Agreement within 2% was found between the optical efficiency measured in the experiments and the optical efficiency determined from direct measurements of the optical properties of the materials in the collector. The method can be performed all the year round in a tropical climate when steady conditions do not occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 30, Issue 5, April 2005, Pages 715-728
Journal: Renewable Energy - Volume 30, Issue 5, April 2005, Pages 715-728
نویسندگان
S. Pramuang, R.H.B. Exell,