کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6764081 | 1431577 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simple index for onsite operation management of ground source heat pump systems in cooling-dominant regions
ترجمه فارسی عنوان
شاخص ساده برای مدیریت عملیات بر روی زمین سیستم های پمپ گرمای منبع زمین در مناطق خنک کننده غالب
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کلمات کلیدی
سیستم های پمپ گرمای زمین منبع، مناطق غالب خنک کننده، مبدلهای حرارتی زمین چاه، مدیریت عملیاتی، مجازات دما متغیر،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
In ground source heat pump (GSHP) systems, large imbalances between cooling and heating loads cause a rise or decline in ground temperature because of thermal interference between multiple ground heat exchangers (GHEs). To evaluate annual changes in ground temperature, we applied a variable temperature penalty, which was simply obtained using measured data without computer simulation. First, we examined measured data for 3 years after completion of a hybrid GSHP system that had 70 borehole-type GHEs, combined with an air source heat pump unit. In the hybrid system, the GSHP showed high efficiency (coefficient of performanceâ¯>â¯5.0) throughout the year and had a variable contribution between years with regard to cooling/heating output and time of operation. The amount of heat rejected to the ground by cooling reached â¼4.8 times that of heat extracted from the ground by heating after 3 years of operation. This imbalance produced ground temperature increases of â¼3â¯Â°C in an internal borehole. The variable temperature penalty reproduced the measured temperature increase, suggesting that the index is appropriate for assessing long-term ground temperature changes in the operation phase. This simple index allows operational improvement onsite and will aid the sustainable operation of GSHP systems in cooling-dominant regions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 127, November 2018, Pages 182-194
Journal: Renewable Energy - Volume 127, November 2018, Pages 182-194
نویسندگان
Sayaka Kindaichi, Daisaku Nishina,