Dynamic And Distributed Model Of Nuclear Power Plant Condensers

The condenser is a critical component that affects the efficiency and performance ofnuclear power plants. In order to make the condenser work under high efficiency and security,advanced simulation methods for condensers need to be developed. Establishinghigh-precision simulation model of Condenser is important for the development ofhigh-precision nuclear power engineering simulator. This thesis takes the steam surfacecondenser commonly used in nuclear power plant as research object. Noncondensable gas hasbeen taken into consideration. On the basis of learning the structure of condenser andanalyzing steam flow and heat transfer behavior of condenser, the distributed thermodynamicmodeling idea was used to model and analyze numeral values.This model is evaluated by comparing with the design parameters of the Qinshan NPPCondenser, Yuan Baoshan Power Plant Condenser and Ping Yu Power Plant Condenser. It isshown that the relative error between steady-state calculation result and design parameters iswithin1%. In addition, this model is used to study the transient conditions of Qinshan NPPCondenser. The practicability of the model is proved through working out the characteristiccurve of condenser variation working-state feature. Then the dynamic response of condenserin the step change of different control parameters worked out. The predictions from themodels were compared with the experimental data and the agreement was satisfactory. Theresults show that the established model can accurately reflect the dynamic characteristics ofcondenser in each condition. This model can also be used as a basic part of engineeringsimulator.