HVAC system design and operation of Three Gorges Left Bank Power Station

Presents the design features of the two central air conditioning systems and one main ventilation system of the power station and analyses their operation. According to characteristics of the zones served, No.1 central air conditioning system is designed as an open system and supplies air with spherical nozzles in large spaces; No.2 central air conditioning system is designed as a closed system with double loop pipelines; and both of them are equipped with sufficient stand-up devices for guaranteeing the systems' reliability. The main ventilation system uses the low temperature gallery for cooling and supplies the cold air to air-conditioned areas by three-stage cascade fans after two-stage filtering.