کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6686904 | 501868 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Field evaluation of advanced controls for the retrofit of packaged air conditioners and heat pumps
ترجمه فارسی عنوان
ارزیابی حوزه کنترل پیشرفته برای تکمیل تهویه مطبوع بسته و پمپ های حرارتی
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کلمات کلیدی
تهویه هوا بسته بندی شده، بسته بندی شده پمپ گرما، بازسازی کنترل پنوماتیک تست مزرعه،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
This paper documents the magnitude of energy savings achievable in the field by retrofitting existing packaged rooftop air conditioner and heat pump units (RTUs) with advanced control strategies not ordinarily used for RTUs. A total of 66 RTUs on 8 different buildings were retrofitted with a commercially available advanced controller for improving operational efficiency. The controller features enhanced air-side economizer control, multi-speed fan control, and demand-controlled ventilation. Of the 66 RTUs, 18 are packaged heat pumps and the rest are packaged air conditioners with gas heat. The eight buildings cover four building types and four climate conditions. Based on the performance data collected for approximately 1Â year, the normalized annual energy consumption savings ranged between 22% and 90%, with an average of 57% for all RTUs. The average fractional savings uncertainty was 12% at 95% confidence level. Normalized annual electricity savings were in the range between 0.47Â kWÂ h/h (kWÂ h per hour of RTU operation) and 7.21Â kWÂ h/h, with an average of 2.39Â kWÂ h/h. RTUs greater than 53Â kW and runtime greater than 14Â h per day had payback periods less than 3Â years even at electricity price of $0.05/kWÂ h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 154, 15 September 2015, Pages 344-351
Journal: Applied Energy - Volume 154, 15 September 2015, Pages 344-351
نویسندگان
Weimin Wang, Srinivas Katipamula, Hung Ngo, Ronald Underhill, Danny Taasevigen, Robert Lutes,