کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1730750 1521435 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Method to investigate and plan the application of low temperature district heating to existing hydraulic radiator systems in existing buildings
ترجمه فارسی عنوان
روش برای بررسی و برنامه ریزی استفاده از حرارت مرکزی حرارت کم به سیستم های هیدرولیک رادیاتور موجود در ساختمان های موجود
کلمات کلیدی
گرمایش مرکزی درجه حرارت پایین، رادیاتور هیدرولیک، مدل سازی، بهینه سازی دما
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


• Application of low operating temperatures to existing hydraulic radiators.
• Method to investigate and plan the connection of existing buildings to low temperature district heating.
• Investigation to calculate performance of hydraulic radiator element.
• Method to optimize supply and return temperatures in low temperature district heating system.

This study presents a method to adapt existing hydronic systems in buildings to take advantage of low temperature district heating (LTDH). Plate radiators connected to double string heating circuits were considered in an optimization procedure, based on supply and return temperatures, to obtain the required logarithmic mean temperature difference (LMTD) for a low temperature heating system. The results of the analysis are presented as the average reduction of LMTD over the heating season compared to the base case design conditions. Two scenarios were investigated based on the assumption of a likely cost reduction in the end users' energy bills of 1% for each 1 °C reduction of return and average supply and return temperatures. The results showed possible discounts of 14% and 16% respectively, due to more efficient operation of the radiators. These were achieved without any intervention in the thermal envelope or to the heating systems, through simply adjusting the temperatures according to demand and properly controlling the plate radiators with thermostatic radiator valves (TRVs).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 113, 15 October 2016, Pages 413–421
نویسندگان
, , , , ,