Ventilation network design and fan matching in underground hydropower stations

Taking a giant underground hydropower station as an example, analyses the process-flow, equipments arrangement and heat distribution, air design parameters in each part, and summarizes the process design characteristics of ventilation network. According to the ventilation process, draws out the ventilation network diagram of the main underground excavation and analyses the structure of the network. Proposes methods of matching all kinds of fans in underground caverns based on setting nodes with zero pressure on the basis of the principle of pressure equilibrium in reticular loop, and presents those spaces which can be set as the nodes with zero pressure in the power plant.