针对船用跨临界CO2两相流引射制冷系统建立动态模型，模型中蒸发器采用移动边界模型，气冷器采用集总参数模型，引射器使用1-D恒压混合模型。通过Matlab计算动态模型，分析系统各参数在压缩机转速、膨胀阀开度及引射器尺寸阶跃扰动下的动态响应。模拟结果显示系统对压缩机转速变化更加敏感，系统参数耦合作用强，并且动态响应中存在逆向响应。本文研究为控制器设计提供了依据和指导。
This paper firstly establishes the dynamic simulation model for marine transcritical CO2 two-phase ejector expansion refrigeration system with Matlab softwareincluding the evaporator using the moving boundary model, the gas cooler using the lumped parameter model and the ejector using the 1-D constant pressure hybrid model. The dynamic response is analyzed under the step disturbances of system parameters including the compressor's speed, the expansion valve's opening degree and the ejector's dimension to be turbulent in by means of Matlab's calculation dynamic model. The simulation results indicate that the compressor's speed status is more sensitive than other system parameters, and the couple action of system parameters are powerful. Also the system dynamic response exists the reverse case. This paper provides the reference for controller design.
2016,38(9): 126-129 收稿日期：2016-3-2
DOI：10.3404/j.issn.1672-7619.2016.09.026
分类号：TB66
作者简介：周爱民(1979-),男,高级工程师,主要从事船舶大气环境控制系统研究。
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