METHOD FOR DESIGNING MULTI-VENTURI NOZZLE IN STEAM GENERATOR AUTOMATICALLY USING PRESSURE LOSS

摘要

PURPOSE: A method for designing a multi-venturi nozzle in a steam generator is provided to automate a determination operation of the multi-venturi nozzle by using a pressure loss. CONSTITUTION: Diffuser information having fluid information is received(S31). A friction loss coefficient is calculated by using the diffuser information(S33). A pressure coefficient of the fluid is calculated(S34). An overall pressure loss of a multi-venturi nozzle is calculated by using the friction loss coefficient and the pressure coefficient(S35). A shape coefficient is calculated(S37). Whether the calculated pressure loss is smaller than a pressure loss threshold value corresponding to the shape coefficient is determined(S38). When yes, A shape of the multi-venturi nozzle is determined according to the shape coefficient(S39).