کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7937980 | 1513104 | 2015 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of separation distance on the mechanical stability and thermal performance of twin hot-water storage caverns
ترجمه فارسی عنوان
اثر فاصله جداسازی بر ثبات مکانیکی و عملکرد حرارتی دو غارخانه ذخیره سازی آب گرم
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کلمات کلیدی
ذخیره انرژی حرارتی مغناطیسی، غارهای سنگی چندگانه، فاصله جداسازی، دینامیک سیالات محاسباتی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Large hot-water storage systems can be used for seasonal storage of solar thermal heat as part of district heating systems. Underground thermal energy storage (TES) using rock caverns is an alternative method for large-scale, long-term TES utilization because it is an economical large-scale storage method. Cavern stability is a crucial consideration in the design of TES caverns. Stability issues limit cavern size and spacing because the safe dimensions of underground caverns largely depend on geotechnical conditions. If the maximum available size of a single cavern does not meet the volume requirements for TES, the use of multiple caverns should be considered. When using multiple TES caverns, the separation distance between the caverns is a decisive factor in the design of storage spaces because multiple caverns may interact mechanically and thermally if they are closely spaced. In this paper, a numerical investigation is conducted to understand how the distance between TES caverns affects their mechanical stability and thermal performance. The investigation is based on twin caverns used to store hot water for district heating in residential areas. The mechanical stability of the caverns is assessed in terms of the probability of cavern failure; cavern thermal performance is assessed in terms of the thermal stratification within the caverns and the heat loss to the surroundings. The heating characteristics of the rock around the caverns are also investigated with respect to operating time. The effect of the separation distance on mechanical stability and thermal performance is presented and discussed in detail, and we suggest design considerations and a performance evaluation process for the use of multiple TES caverns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 114, April 2015, Pages 183-195
Journal: Solar Energy - Volume 114, April 2015, Pages 183-195
نویسندگان
Dohyun Park, Eui-Seob Park,