Numerical Simulation Of Condenser Thermal Performance

The condenser is a critical component that affects the efficiency and performance of thermal power plants. Simulation methods for condensers is effective, it is a very signification to provide essential theory evidence for condenser design and operation. condenser have two steam imports, which include main steam turbine and auxiliary steam turbine, and that steam load variation will affects steam turbine work characteristic. The thermal performance of device is closely related to the condenser working under high efficiency and safety, it is necessary to explore the thermal properties of facilities under variant working condition. A method of development of dynamic mathematical model of the condensation system in condenser is presented, which based on the working principle of the system, the condenser is divided into two parts along the vertical direction of the cooling tube bundle, it match with space where two steam imports condense and heat transfer, but when the pressure of space is different, it will take place mixed vapor transfer phenomenon, it is aim to accurate explore the dynamic thermal performance of equipment.This model is evaluated by comparing with the design parameters of the Dagang power plant condenser, 1000MW power plant condenser. It is shown that the maximal relative error between steady-state calculation result and design parameters is within 1.8%. In addition, this model is used to study the dynamic conditions of condenser. The practicability of the model is proved through working out the thermal characteristic curve of condenser variation working-state feature.Desuperheater and de-pressed equipment is an essential part for the system safely and stable operation, which accept extra steam form the variable condition, then it across the device back into the condenser. The simulation model of device is aim to explore dynamic characteristics. It is evaluated by comparing with the design parameters of the Qinshan temperature and pressure reduction system. It is shown that the maximal relative error between steady-state calculation result and design parameters is within 2%. The predictions from the models were compared with the design data and the agreement was satisfactory. This model can also be used as practical simulator equipment. It is a very signification to explore the thermal properties of equipment.