Research on Performance of Natural Draft Cooling Tower in Power Plant

Cooling tower is one of the most important equipments of condensing and cooling system in power plant,and its operational performance influences greatly the safety and economy of generating unit.Refer to the hyperbolic-type natural-draft cooling tower,the outlet temperature of the cooling tower and its main influencing factors is obtained through its thermal performance calculation.Non-uniform water spray density in packing layer influences the outlet temperature severely,according to the actual operation parameters.The calculation is in accord with the measurement.Simultaneously,thermal state model is established for the air flow and the aerodynamic performance is calculated in cooling tower.The thermal and aerodynamic performance regulation offers certain guide rules for operation,maintenance and modification of cooling tower.