کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10390451 | 884552 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat transfer simulation of a solar test stand
ترجمه فارسی عنوان
شبیه سازی انتقال حرارت یک آزمایش خورشیدی ایستاده
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کلمات کلیدی
انرژی گرمایی خورشیدی، انتقال حرارت شعاعی، انتقال حرارت عددی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
A transient heat transfer model for a solar test stand is presented here to predict temperatures of the absorber plates on a solar test stand, instead of consuming excessive time to conduct numerous experiments. Three zones are defined in this model for the test stand: glass, enclosed-air, plates/insulation layers. A radiation model for the glass layer is developed here to achieve more accurate simulation. This model combines a cold medium without scattering approximation for solar irradiation together with optically thick approximation for infrared thermal radiation, thereby simplifying the spectral dependence on the semitransparent medium of glass. The numerical simulation to obtain three-dimensional transient temperature predictions is made with the finite-volume discretization and alternating directional implicit (ADI) scheme together with the Crank-Nicolson approach. In addition, the coupling effects on the interfacial boundary are handled by the iterative method. The model is validated by comparing the measured temperatures with the predicted ones at selected positions. It is found that the deviations between measured and predicted temperatures on the absorbing plates fall within 3Â K (about 1%), which validates the computational model developed in this study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 72, Issue 1, 5 November 2014, Pages 143-150
Journal: Applied Thermal Engineering - Volume 72, Issue 1, 5 November 2014, Pages 143-150
نویسندگان
Wai-Kwuen Choong, Keh-Chin Chang,