冰蓄冷中央空调预热泵流量模糊控制  

Fuzzy control of pre-heat pump flow in ice-storage centralized air-conditioning

作　　者：徐今强[1,2,3] 冯自平[1] 肖睿[1] 黄冲[1] 

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]中国科学院研究生院,北京100049 [3]广东海洋大学海洋遥感与信息技术实验室,广东湛江524088

出　　处：《排灌机械工程学报》2010年第3期260-264,共5页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金委-广东省联合基金资助项目(U0634005);国家863计划项目(2006AA05Z254)

摘　　要：为了解决冰蓄冷中央空调存在的板换堵塞问题,提出了以制冰板换回水温度为控制变量,采用模糊控制预热变频泵流量的方法,以实现制冰快速性和可靠性的解决方案.设计了预热泵流量模糊控制器,研制了制冰板换防堵塞的预热回路;采用离线计算与在线查询相结合的方法,对基于西门子可编程逻辑控制器(PLC)的冰蓄冷中央空调系统进行了试验研究,给出了制冰板换回水温度控制结果,并对该模糊控制结果与传统的PID控制结果进行了比较.试验结果表明:在环境温度为28℃时,采用模糊控制调节制冰板换回水温度,其下降时间为90 m in,调节时间为158 min,稳态误差为0.26℃.该方案为智能化冰蓄冷中央空调稳定运行提供了依据.The plate heat exchanger of ice-storage centralized air-conditioning system is always jammed.With the objective of making ice quickly and reliably,a solve scheme was proposed.With consideration of the return water temperature of ice-making plate heat exchanger as controlled variable,the scheme regulated the flow rate of pre-heat pump by means of fuzzy control.A fuzzy controller was designed to dominate the flow rate of the pump,and a pre-heat loop was developed to prevent the ice-making plate heat exchanger from jamming.The experimental investigation of Siemens PLC based ice-storage centralized air-conditioning was performed by combining offline calculation with online inquiry,and the control effect of return water temperature of ice-making plate heat exchanger was compared with the traditional PID control.The results show that when the environmental temperature is 28 ℃,the fall time,the settling time and the steady state error of return water temperature are 90 min,158 min and 0.26 ℃,respectively.The scheme provides the basis for stable operation of the intelligent ice-storage centralized air conditioning system.

关 键 词：冰蓄冷空调 流量 温度 模糊控制 可编程逻辑控制器 

分 类 号：S218[农业科学—农业机械化工程] TP273.22[农业科学—农业工程]