کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6727827 1428920 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydraulic resistance identification and optimal pressure control of district heating network
ترجمه فارسی عنوان
شناسایی مقاومت هیدرولیک و کنترل فشار مطلوب شبکه های گرمایش مرکزی
کلمات کلیدی
شناسایی مقاومت هیدرولیک، کنترل فشار مطلوب، شبکه حرارت مرکزی ذخیره انرژی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Hydraulic performance of district heating (DH) network is the key to energy reduction of DH system. Efficient hydraulic operation strategy requires precise values of the hydraulic resistances of pipelines. In this paper, a hydraulic resistance identification method was developed. With this method, precise hydraulic resistances of all the pipelines in the DH network can be obtained based on the pressure and flow rate values observed at the heating substations under different hydraulic conditions. An optimal pressure control strategy of DH network was established based on the identified hydraulic resistances for energy reduction of the pumping systems. The feasibility and effectiveness of the hydraulic resistance identification method were analyzed with the well-developed hydraulic simulation technique of district heating network realized in Matlab environment. Hydraulic performances of the optimal pressure control (OPC) strategy were compared with the traditional constant pressure difference control (CPDC) strategy. Results show that the pumping energy of DH system under the control of CPDC can be reduced by 14.6% compared with OPC during the heating period.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 170, 1 July 2018, Pages 83-94
نویسندگان
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