华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (2): 117-121,127.

• 动力与电气工程 • 上一篇    下一篇

区域供冷系统制冷主机设计容量的优化分配

康英姿华贲2   

  1. 1. 华南理工大学 汽车工程学院, 广东 广州 510640;2. 华南理工大学 传热强化与过程节能教育部重点实验室, 广东 广州 510640
  • 收稿日期:2007-03-29 修回日期:2007-05-21 出版日期:2008-02-25 发布日期:2008-02-25
  • 通信作者: 康英姿(1970-),女,讲师,华南理工大学化工与能源学院在职博士生,主要从事建筑节能及制冷空调研究. E-mail:yzkang@scut.edu.cn
  • 作者简介:康英姿(1970-),女,讲师,华南理工大学化工与能源学院在职博士生,主要从事建筑节能及制冷空调研究.
  • 基金资助:

    广东省自然科学基金资助项目(06300189)

Optimal Distribution of Chiller Design Capacity in District Cooling System

Kang Ying-zi1  Hua Ben2   

  1. 1. School of Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China;2. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-03-29 Revised:2007-05-21 Online:2008-02-25 Published:2008-02-25
  • Contact: 康英姿(1970-),女,讲师,华南理工大学化工与能源学院在职博士生,主要从事建筑节能及制冷空调研究. E-mail:yzkang@scut.edu.cn
  • About author:康英姿(1970-),女,讲师,华南理工大学化工与能源学院在职博士生,主要从事建筑节能及制冷空调研究.
  • Supported by:

    广东省自然科学基金资助项目(06300189)

摘要: 依据制冷主机系统寿命周期费用最小的原则,建立了考虑全年供冷负荷变化的区域供冷系统中不同类型制冷主机之间设计容量分配的优化模型.实例计算结果表明:在电价和蒸汽价格确定的情况下,对于冷负荷一定、采用电制冷主机和吸收式制冷主机作为冷源的某区域供冷系统,两种制冷主机之间的设计容量分配存在最优值;电价与蒸汽价格的变化均影响制冷主机设计容量的优化分配,但电价的影响很大,蒸汽价格的影响相对较小;蒸汽的供应量是否有限制,既影响制冷主机设计容量的优化分配,又影响区域供冷系统中制冷主机系统的寿命周期费用.

关键词: 区域供冷系统, 制冷主机, 设计容量, 优化模型, 寿命周期费用

Abstract:

According to the principle of minimizing the life cycle cost of chiller systems, this paper proposes an optimal model considering the variation of all-year cooling load to distribute the design capacity among different types of chillers in the district cooling system. The results of a case study show that ( 1 ) for a district cooling system with both the electrical and the absorption chillers as the cooling sources, if the electricity and steam prices are both determinate and the cooling load are constant, there is an optimal distribution of design capacity between the two kinds of chillers; (2) both the electricity price and the steam price influence the optimal distribution of design capacity, especially the former; and (3) the limitation of steam supply is an important factor affecting the optimal distribution of design capacity and the life cycle cost of chiller systems.

Key words: district cooling system, chiller, design capacity, optimal model, life cycle cost