کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1722323 1014719 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic modeling of thermal conditions for hot-water district-heating networks
ترجمه فارسی عنوان
مدل سازی دینامیکی شرایط حرارتی برای شبکه های گرمایی منطقه گرمایی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی

To investigate the dynamic characteristics of the thermal conditions of hot-water district-heating networks, a dynamic modeling method is proposed with consideration of the heat dissipations in pipes and the characteristic line method is adopted to solve it. Besides, the influences of different errors, space steps and initial values on the convergence of the dynamic model results are analyzed for a model network. Finally, a part of a certain city district-heating system is simulated and the results are compared with the actual operation data in half an hour from 6 secondary heat stations. The results indicate that the relative errors for the supply pressure and temperature in 5 stations are all within 2%, except in one station, where the relative error approaches 4%. So the proposed model and algorithm are validated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrodynamics, Ser. B - Volume 26, Issue 4, 1 September 2014, Pages 531-537