动力分布式通风系统性能模拟及分析

Simulation and Analysis of Performance of Power-distributed Ventilation System

动力分布式通风系统是一种主风机与支管风机共同承担需求风量输送动力的通风系统,该系统便于控制、能效高。本文设计了某地下空间的动力分布式通风系统,建立了该系统基于图论的管网模型,通过模拟获取了系统的各风机的实际运行工作点及各支路管段的风量,进一步比较了系统实际运行参数与设计参数,结果表明了该系统设计的有效性与可靠性。通过分析管网阻抗等对系统模拟结果的影响,进一步表明了该动力分布式通风系统模拟结果的准确性。

Power-distributed ventilation system is an innovative ventilation system with the main fan and thebranch fans used for the air transportation power simultaneously.This system has high energy efficiency with easycontrol.This paper presents the design of a power-distributed ventilation system for a underground space.Thepipe network model of this system is developed based on graph theory.The practical operation points and the airflow rate of each branch are achieved by the simulation.The practical operation points and the design parametersare compared.The result shows that the design of the power-distributed ventilation system for the undergroundplace is effective and reliable.By analyzing the influence of the network impedance on the system simulationresults,the accuracy of the simulation results of the dynamic power-distributed ventilation system is furtherdemonstrated.