基于移动边界模型的变频空调系统动态仿真  

Dynamic Simulation of the Air-conditioning System with Inverter Based on the Moving-boundary Model

作　　者：韩汉平[1] 肖睿[1] 何世辉[1] 黄冲[1] 青春耀[1] 冯自平[1] 肖洪海 马颖江 

机构地区：[1]中国科学院广州能源研究所 [2]珠海格力电器股份有限公司,广东珠海519070

出　　处：《流体机械》2008年第6期71-75,85,共6页Fluid Machinery

基　　金：科技部863计划(2007AA05Z224)

摘　　要：建立了变频空调系统的动态仿真模型。采用集总参数方法和移动边界模型分别建立蒸发器5阶和冷凝器7阶动态模型;压缩机和膨胀阀由于热惯性小,采用稳态模型求解。系统动态模型以压缩机和膨胀阀模型作为边界条件,通过联立两换热器动态模型,组合成12阶矩阵模型。仿真结果表明,此模型可对压缩机转速、膨胀阀开度、风量等阶跃变化时,系统的动态特性进行有效预测。A numerical model is developed to simulate the dynamic behavior of the air-conditioning system with inverter. The 5^th order dynamic model of evaporator and the 7^th order dynamic model of condenser are built based on the moving-boundary model, using the lumped parameter method. Steady state models are applied for the compressor and expansion valve for their small thermal inertia. The dynamic models of two heat-exchangers are combined into a 12^th order system model in matrix form with the compressor and expansion models as its boundary conditions. The simulation results show that this model is valid for predicting the system＇s dynamic behavior under the step changes of compressor speed, expansion valve opening, fan speed and etc.

关 键 词：空调系统 移动边界 动态特性 仿真 

分 类 号：TB65[一般工业技术—制冷工程] TP391.9[自动化与计算机技术—计算机应用技术]