Study On The Adoption Of Multizone Network Model In Ventilation System Design Of A Railway Sleeper Train

Railway passenger train's ventilation system is an important part of air environmental control systems in a train,rational design of ventilation systems is of great significance to maintain indoor comfort of a passenger train.In this paper, based on the premise of the ventilation system design of a railway sleeper train's prototype, taken into account the internal structure of the railway sleeper train to make the preliminary design of the ventilation system;then use the knowledge of network graph theory to establish the multizone network model of the ventilation system, after the introduction of Hardy - Cross Method,adopts its principle to make solving of the multizone network model of the ventilation system, and based on the results of the multizone network model to optimize the design of ventilation system;at last by making the comparative analysis of the experimental data and results of the multizone network model to verify the reliability of the multizone network modelExperimental results show that: the data derived from multizone network model is accord with the experimental data and ventilation system has goog air supply uniformity; the multizone network model applied in the paper is accurate and reliable.At present, the design of ventilation systems mainly adopts the semi-empirical formula which is the combination of theory and experiment,railway passenger train ventilation system differ from building ventilation system in its characteristic of compact structure which demands a higher precison in the phase of ventilation system design, in this paper, the application of multizone network model has the optimization results to the railway passenger train ventilation system and is significant to the rational design of railway passenger train ventilation system.