华南理工大学学报(自然科学版) ›› 2004, Vol. 32 ›› Issue (10): 28-31,35.

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区域供冷系统中冷冻水输送管线的优化设计

刘金平1 杜艳国1陈志勤2   

  1. 1.华南理工大学 电力学院‚广东 广州510640;
    2.华南理工大学 工业装备与控制工程学院‚广东 广州510640
  • 收稿日期:2004-02-17 出版日期:2004-10-20 发布日期:2015-09-08
  • 通信作者: 刘金平(1962-)‚男‚博士‚副教授‚主要从事制冷空调系统的优化设计与运行方面的研究. E-mail:mpjpliu@scut.edu.cn
  • 作者简介:刘金平(1962-)‚男‚博士‚副教授‚主要从事制冷空调系统的优化设计与运行方面的研究.
  • 基金资助:
    国家重点基础研究发展规划资助项目(G2000026308)

Optimized Design of the Chilled Water-conveying Pipeline in the District Cooling System

Liu Jin- ping1   Du Yian- guo1   Chen Zhi- qin2   

  1. 1.College of Electric Power‚South China Univ.of Tech.‚Guangzhou510640‚Guangdong‚China;
    2.College of Industrial Equipment and Control Engineering‚South China Univ.of Tech.‚Guangzhou510640‚Guangdong‚China
  • Received:2004-02-17 Online:2004-10-20 Published:2015-09-08
  • Contact: 刘金平(1962-)‚男‚博士‚副教授‚主要从事制冷空调系统的优化设计与运行方面的研究. E-mail:mpjpliu@scut.edu.cn
  • About author:刘金平(1962-)‚男‚博士‚副教授‚主要从事制冷空调系统的优化设计与运行方面的研究.
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摘要: 建立了确定区域供冷系统冷冻水输送管线最优水流速度和保温层最优厚度的优化模型‚其目标函数为系统的年度费用‚由冷冻水二级泵的年运行费用、冷冻水输送管线冷量损失费用、二级泵功耗导致的冷水温升所产生的费用、冷冻水二级泵的折旧和维修费用以及冷冻水输送管线折旧和维修费用5个部分组成.考虑全年变负荷运行的特点‚在部分负荷时假设冷冻水的供回水温差不变‚采用变频泵调节流量.通过实例计算‚得到以下结论:对于区域供冷系统‚存在最优的水流速度和保温层厚度;冷水输送距离对最优水流速度和保温层最优厚度没有影响;最优水流速度随电价升高而降低‚随设计冷负荷增大而升高;保温层最优厚度随电价升高而增加‚随设计冷负荷的增大而稍有增加。

关键词: 区域供冷系统, 管线, 优化设计, 变冷负荷

Abstract: The transaction model constitution and the transmission congestion management in the process of power transactions constitute a key issue in the normal operation of the power market.In this paper‚by drawing on some o-verseas experiences an according to the specific conditions of Chinaʾs reform of the power market at its earlier stage‚a new transaction model and transmission congestion management method was proposed based on the investigation into the power market in Guangdong Province.In the congestion management‚the corresponding least reduction of social benefit is taken into account and the cost of the congestion management is distributed in accordance with the load con-gestion dispatching factor.A numerical example was finally presented to prove the validity of the proposed method‚which is of practical significance to the development of the power market‚especially to the construction of electric net -works.

Key words:  district cooling system, pipeline, optimized design, variable cooling load