%0 Journal Article
%T 区域供冷系统供回水经济温差优化模型研究
%A 张国强
%A 徐玉珍
%A 韩杰
%A 刘涛
%A 吴海平
%J 湖南大学学报(自然科学版)
%D 2015
%X 从经济的角度综合考虑，基于动态年折算费用法建立了区域供冷系统供回水经济温差的优化模型，并以夏热冬冷地区某小区区域供冷系统为例，分析了用电价格、比摩阻、供冷距离以及空调负荷等因素对供回水经济温差的影响.结果表明,当供回水经济温差为6.3 ℃时，年度费用最低，此时供水温度为5.9 ℃，与常规设计温度7/12 ℃相比，每年可节约2.4万元，经济温差随电价的增加而减小，随比摩阻、供冷距离、空调负荷的增大而增大.</br>The design temperature difference between chilled water supply and return of district cooling systems is usually considered by using empirical values or only from the view point of energy consumption. In this paper, an optimization model of temperature difference between the chilled water supply and return of a district cooling system (DCS) was established with dynamic annual commuted cost method from the economic aspect. This model was used to optimize the temperature difference of the chilled water of a district cooling system in a community in a zone hot in summer and cold in winter. Besides, the influence of power price, specific frictional resistance, cooling supply distance and air conditioning load on the economic temperature difference was also analyzed. The results have shown that annual cost is the lowest when economic temperature difference is 6.3℃ and the corresponding design chilled water supply temperature is 5.9℃. Compared with the conventional design temperature of 7/12℃, it saves RMB 24,000 a year and the economic benefit is remarkable. Moreover, the economic temperature difference decreases with the growth of power price and increases with the growth of specific frictional resistance, cooling supply distance and air conditioning load.
%K 区域供冷 动态年折算费用法 经济温差 影响因素&lt
%K /br&gt
%K district cooling dynamic annual commuted cost method chilled water temperature difference influence factor
%U http://hdxbzkb.cnjournals.net/ch/reader/view_abstract.aspx?file_no=20150918&flag=1