Model of Refrigeration System for Optimizing Control
Zhu Ruiqi,Xie Jiaze,Wu Yezheng
(School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

Abstract: A multiª²input multi-output(MIMO) model of refrigeration system is proposed. The system model comprises the dynamic heat exchanger model based on the lumped-parameter method and moving phase boundary method, and the stable flow models of compressor and expansion valve. Of the various intelligent controlling methods based on model, the proposed model is general for refrigeration machine control. It could be used to describe the relations between multi-input and multi-output parameters of refrigeration system, and to obtain the dynamic link among system parameters, so as to take control measures correspondently according to its analysis results. It is applicable to the optimizing control of whole refrigeration system, and to the optimizing control of the refrigeration system with given parameters and control method.
Keywords:refrigeration system;control;model