کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10294003 | 512447 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A modified three-dimensional numerical model for predicting the short-time-step performance of borehole ground heat exchangers
ترجمه فارسی عنوان
یک مدل عددی سه بعدی اصلاح شده برای پیش بینی عملکرد کوتاه مدت از مبدلهای حرارتی زمین گمانه
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
A modified three-dimensional numerical model for the borehole ground heat exchangers was proposed which took into account the effect of grout thermal capacitance and fluid circulation period inside the U-tube in a short-time-step analysis. The present model was validated by experimental data from others. It was found that the fluid temperature along the U-tube changed abruptly at the interface between the entering and the existing fluid inside the borehole. Before the entering fluid travelled to the bottom of the U-tube, the borehole was only partly-loaded. The difference in the simulated fluid leaving temperatures between the long- and short-time-step approaches could be up to 3 °C when a periodic intermittent load, common during the low-load season, was applied. This implied that a short-time-step model should be used in a long-term dynamic system simulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 87, Part 1, March 2016, Pages 618-627
Journal: Renewable Energy - Volume 87, Part 1, March 2016, Pages 618-627
نویسندگان
C.K. Lee,