کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4919279 | 1428950 | 2017 | 49 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Empirical model for evaluating power consumption of centrifugal chillers
ترجمه فارسی عنوان
مدل تجربی برای ارزیابی مصرف برق چیلرهای گریز از مرکز
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کلمات کلیدی
مصرف برق، مدل تجربی، چیلرهای موازی گریز از مرکز، تفاوت فشار،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
A novel steady-state empirical power consumption model using water pressure difference, instead of water flow rate or cooling capacity, as one of the input variables is proposed for centrifugal chillers of a cooling plant with multiple parallel chillers. It is possible to evaluate the energy consumption and performance of a chiller without measuring the chilled water flow rate, which is difficult to measure directly and accurately in many on-field operating chiller plants. The on-field measurement and analysis indicates that the accuracy of the proposed model is slightly superior to that of the four empirical models quoted from literature-Yik model, Braun model, Comstock model and Chang model. When the internal data is considered, the coefficient of variation of root-mean-square error (CV) of the novel model for the chillers 1-3# are respectively 2.51%, 3.48% and 2.67% with the vast majority of relative errors being ±8%, ±10% and ±10%, respectively. When external data are adopted, the proposed model is obviously superior to the other four models with CV values for chillers 1-3# respectively being 4.94%, 7.79% and 5.98% and the vast majority of relative errors being ±8%, ±12% and ±10%, respectively. This result is acceptable for engineering applications, such as fault detection and diagnostics (FDD), building energy audit, energy conservation management and operation management of chiller plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 140, 1 April 2017, Pages 359-370
Journal: Energy and Buildings - Volume 140, 1 April 2017, Pages 359-370
نویسندگان
Handong Wang,