摘要
多联式空调系统具有良好的容量调节能力,可以同时满足多个房间的温度控制需求。针对其制热工况的动态特性进行仿真建模,在采用移动边界法蒸发器和冷凝器动态仿真模型的基础上,建立了整个多联式空调系统制热工况的状态空间法模型,并采用变步长的方法以提高模型的稳定性和速度。与1套具有4台室内机和1台室外机的多联式系统的试验数据进行对比,结果表明:该动态仿真模型能够准确预测在压缩机频率调节过程中系统运行状态的动态相应趋势,并保持很高的计算精度。
Variable refrigerant flow (VRF) air conditioning systems can provide comfortable thermal environment for several rooms by variable capacity control. Based on the simulation of the dynamic characteristics of the heating conditions, the state space method model of the heating operation of the whole multi-connected air conditioning system was established based on the dynamic simulation model of the evaporator and condenser of the moving boundary method. A step-by-step approach is used to increase the stability and speed of the model. Compared with the experimental data of a multiconnected system with four indoor units and one outdoor unit, the results show that the dynamic simulation model can accurately predict the dynamic corresponding trend of the system operating state during the compressor frequency adjustment process, and maintain very high calculation accuracy.
作者
司春强
邵双全
SI Chun-qiang;SHAO Shuang-quan(Huashang International Engineering Co., Ltd., 100069, Beijing. China;CAS Key Laboratory of Cryogenics, Technical Institute ofPhysics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China)
出处
《建筑技术》
2019年第6期656-660,共5页
Architecture Technology
基金
国家自然科学基金(51676199)
关键词
多联机
动态仿真
状态空间法
制热
空调
variable refrigerant flow (VRF)
dynamic simulation
state-space model
heating mode
air conditioning
