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仿真一直以来都是一种认识客观现象的较好手段,本文基于研究末端通断调节供暖系统热瞬态响应的需要,提出了一套仿真模型。首先根据末端系统组成的各部件(房间、散热器和通断控制设备)属性,采用不同的方法分别建立了可以进行瞬态响应的各部件子模型,如基于状态空间法建立了房间室温模型、基于热平衡原理建立了散热器的集总模型、基于流动过程的不同采用了两段式平均水温模型,综合考虑了邻室传热、房间通风、热水流动延迟,散热器水体和壳体的蓄热等因素的影响。其次,考虑各部件模型之间的物理过程,构建了多用户系统模型。最后,通过理论计算以及实验测试,对系统模型进行了验证。经过实测结果和模拟结果的比较,可知本文建立的末端通断调节仿真平台可靠,能够反映实际情况,可应用于末端通断调节系统的室温控制效果模拟、分摊方法合理性分析以及节能效果分析。
Simulation has always been a better means of understanding the objective phenomenon. Based on the research of adjusting the transient response of the heating system on and off, a simulation model is proposed. Firstly, according to the properties of the components of the end system (room, radiator and on-off control equipment), different sub-models of each component that can perform transient response are established by different methods. For example, room temperature model is established based on the state space method, Based on the principle of heat balance, the lumped model of radiator was established. Based on the different flow processes, a two-stage average water temperature model was adopted. Considering the heat transfer in adjacent rooms, the ventilation in rooms, the delay of hot water flow, Heat and other factors. Secondly, considering the physical process between each component model, a multi-user system model is constructed. Finally, the system model is validated through theoretical calculations and experimental tests. After comparing the measured results with the simulation results, it can be seen that the end-on-off simulation platform established in this paper is reliable and can reflect the actual situation. It can be used to simulate the room temperature control effect of end-on-off regulation system, rationality analysis of allocation method and energy saving effect analysis.