Model Experiment And Network Study On The Ventilation Of Xiluodu Hydropower Plant

The contribution of hydropower plant plays more important role in our country for its superior performance of hydropower resources and serious energy shortage. The ventilation designing for workspace is so important during the contribution of hydropower plant that the performance of ventilation including thermal environment and air distribution had direct effects on the efficiency of workers and the running of machines. This paper make research on the characteristic of thermal environment in workspace and the cooperation of ventilation dynamics, based on Xiluodu hydropower plant's ventilation model .It provides reference for other same kind ventilation design of large-space factory buildings underground.Many model experiments on ventilation system of underground workspace apply the Resemblance Theory as an classical theory of hydromechanics in the past. In this paper the design and build for model, testing and data's processing based on the Resemblance Theory; during design and build for model the dimension of model need to be proportional to the real building so that the proportion of other related parameters be acquired to satisfy the precondition of experiment Depend on software CFD to simulate different model structure of the main portion to find out the best plan to promote the feasibility of experiment. During the experiment, test the characteristic of air distribution in every main channel, calculate the pressure of local fan on generatrix hole and main transformer, and find out the relation between each fan so order to provide technology supports for practical operation.The disadvantage of traditional design hardly take into account of the impacts between each related system, may produce bigger bias for practical operation as it bases on project compare and calculating by hand for each subsystem. This paper apply a method of network analysis to research the ventilation system and base on related theory to chart ventilation meshwork for the underground holes of hydroelectric station. Find out the relationship between each pipeline of systems by special software to testify and analyze the conclusion of model experiment.During transitional seasons the natural ventilation in underground workspace of Xiluodu hydroelectric station has great difference from others. According to the network analysis testify and analyze two alternative ventilation flows to find out optimal flow for the model experiment. Arrange two operational cases for the experiment: closing all fans and opening local fans. In the two condition, measure the temperature and...