کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9702740 | 1462919 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simulation of a cavity insulated by a vertical single band cold air curtain
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Simulation of a cavity insulated by a vertical single band cold air curtain Simulation of a cavity insulated by a vertical single band cold air curtain](/preview/png/9702740.png)
چکیده انگلیسی
The cold air curtain used for cavity insulation in the present study is a fundamental idealization of a refrigerated air curtain in display cases. Flow and heat transfer characteristics of vertical single band cold air curtains are studied numerically to investigate the effects of mixed convection and height/width ratios. The results show that for a given Grashof number, the Richardson number must be less than a critical value to assure thermal insulation. From studies of the effect of height/width ratios, it is found that small height/width ratios yield an increased critical Richardson number (thus a reduced critical Reynolds number) and a decreased volumetric infiltration rate. For the cavity whose height/depth ratio equals 2 in the present study, the critical Richardson numbers are 0.62, 0.28 and 0.20 for the height/width ratios of 10, 15 and 20, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 46, Issues 11â12, July 2005, Pages 1745-1756
Journal: Energy Conversion and Management - Volume 46, Issues 11â12, July 2005, Pages 1745-1756
نویسندگان
Yun-Guang Chen, Xiu-Ling Yuan,