考虑旁通回路的空调冷冻水系统变压差控制静态稳定性分析

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (06): 772-777.

考虑旁通回路的空调冷冻水系统变压差控制静态稳定性分析

刘雪峰，刘金平，陈星龙，罗文海

(华南理工大学电力学院；能源高效清洁利用广东普通高校重点实验室，广州 510640)

收稿日期:2013-09-23 出版日期:2014-06-30 发布日期:2014-06-30
基金资助:
广东省重大科技专项资金资助（2012A010800024）

Static Stability Analysis of Air-Conditioning Chilled Water System for Variable Differential Pressure Control Considering Bypass Loop Regulation Characteristics

LIU Xuefeng,LIU Jinping,CHEN Xinglong,LUO Wenhai

(School of Electric Power; Key Laboratory of Efficient and Clean Energy Utilization of Guangdong Higher Education Institutes, South China University of Technology, Guangzhou 510641, China)

Received:2013-09-23 Online:2014-06-30 Published:2014-06-30

摘要/Abstract

摘要：

由于中央空调冷冻水系统末端负荷分布和管网结构是影响其控制稳定性和可靠性的关键因素，以异程布置冷冻水系统为研究对象，在充分考虑旁通回路调节特性的基础上，建立了管网水力特性精确数学模型，研究了旁通回路压差设定值对管网水力特性和能耗特性的影响，以及管网末端设备流量同步变化和非同步变化等多运行工况下的水力特性，着重分析了压差反馈信号监测点对变压差控制系统的静态稳定性及其调节品质的影响.研究表明，合理调整控制目标值以及旁通调节阀压差设定值是实现节能、稳定运行的关键.

关键词: 中央空调, 变负荷运行, 静态稳定性, 热力学特性, 异程布置

Abstract:

The terminal cooling load distribution and pipe network structure of the air-conditioning system are the key factors that influence its control stability and reliability. An exact mathematical model of pipe network hydraulic characteristics was built in this paper based on a directreturn chilled water system, in which the regulation characteristics of bypass loop was considered in detail. The influence of pipe network hydraulic characteristics and energy consumption characteristics on pressure difference setting value of bypass loop were studied in detail, and the hydraulic characteristics in different running conditions were also studied. This paper focused on the influence of static stability and control quality on variable pressure difference control system by checkpoint of pressure difference feedback signal. The research shows that reasonable adjustment in control target value and setting value of bypass control valve are the key factors to achieve efficiency and stable operation.

Key words: central air-conditioning, variable load operation, static stability, thermodynamic characteristics, direct-return layout

中图分类号:

TK 39

刘雪峰，刘金平，陈星龙，罗文海. 考虑旁通回路的空调冷冻水系统变压差控制静态稳定性分析[J]. 上海交通大学学报（自然版）, 2014, 48(06): 772-777.

LIU Xuefeng,LIU Jinping,CHEN Xinglong,LUO Wenhai. Static Stability Analysis of Air-Conditioning Chilled Water System for Variable Differential Pressure Control Considering Bypass Loop Regulation Characteristics

[J]. Journal of Shanghai Jiaotong University, 2014, 48(06): 772-777.

参考文献

［1］周洪煜，陈小健，陈孜虎. 变水量与变风量的中央空调节能控制策略［J］. 控制工程，2011，18(3): 474478.

ZHOU Hongyu， CHEN Xiaojian， CHEN Zihu. Energy saving control strategy in the central airconditioning based on variable water volume and variable air volume［J］. Control Engineering of China，2011，18(3): 474478.

［2］刘金平，刘磊，刘雪峰，等. 办公建筑空调制冷系统节能改造分析［J］. 建筑科学， 2012， 28(2): 2328.

LIU Jinping，LIU Lei，LIU Xuefeng，et al．Analysis on energysaving retrofit of airconditioning system of an office building［J］. Building Science，2012，28(2): 2328.

［3］朱小旺，蒋绍坚. 大型公共建筑空调系统的节能控制［J］.中南林业科技大学学报， 2010, 30(10): 143146.

ZHU Xiaowang, JIANG Shaojian. Energysaving control for airconditioning system in large public building［J］. Journal of Central South University of Forestry & Technology， 2010, 30(10): 143146.

［4］杨晓庆，左为恒，李昌春. 改进 PSO 算法在中央空调控制系统中的应用［J］. 计算机仿真， 2011, 28(11): 201204.

YANG Xiao qing，ZUO Weiheng，LI Changchun. Improved PSO algorithm of central airconditioning control system［J］. Computer Simulation，2011, 28(11): 201204.

［5］杨助喜，岳献芳，王立. 基于蜜蜂进化型遗传算法的中央空调系统能耗优化研究［J］. 建筑科学，2011, 27(6): 78105.

YANG Zhuxi， YUE Xianfang， WANG Li. Study on the energy consumption optimization in a central airconditioning system based on bee evolutionary genetic algorithm method［J］. Building Science， 2011, 27(6): 78105.

［6］王建玉，任庆昌. 中央空调水系统的节能优化［J］.西安建筑科技大学学报:自然科学版, 2010, 42(6): 850855.

WANG Jianyu，REN Qingchang. Optimization for central airconditioning water system［J］. J Xi′an Univ of Arch & Tech: Natural Science Edition，2010, 42(6): 850855.

［7］SHI Zhigang, LI Xuquan, HU Songtao. Direct feedback linearization based control in variable air volume airconditioning system［J］. Procedia，2012, 24: 12481254.

［8］Parameshwaran R, Harikrishnan S, Kalaiselvam S. Energy efficient PCMbased variable air volume air conditioning system for modern buildings［J］. Energy and Buildings， 2010， 42(8): 13531360.

［9］YAO Ye, CHEN Jing. Global optimization of a central airconditioning system using decomposition–coordination method［J］. Energy and Buildings， 2010，42(5): 570583.

［10］刘雪峰，刘金平，陈星龙，等. 同程布置冷水系统管网水力特性计算机分析［J］. 暖通空调，2012, 42(10): 121129.

LIU Xuefeng，LIU Jinping，CHEN Xinglong, et al. Computer calculation method of hydraulic characteristics of reversed return chilled water system ［J］. HV＆AC， 2012, 42(10): 121129.

［11］LIU Xuefeng, LIU Jingping, LU Jidong, et al. Research on operating characteristics of directreturn chilled water system controlled by variable temperature difference［J］. Energy， 2012， 40(1): 236249.