Each steam generator can contain anywhere from 3,000 to 16,000 tubes, each about 19mm diameter.While the secondary fluid is always water, the reactor coolant (carbon dioxide, sodium, helium) depends on the reactor type. To increase the amount of heat transferred and the power generated, the heat exchange surface must be maximalized. Liquid metal cooled reactors such as the Russian BN-600 reactor also use heat exchangers between a secondary sodium circuit and a tertiary water circuit. The boiling water reactor does not require steam generators since the water boils directly in the reactor core. In other types of reactors, such as the pressurised heavy water reactors of the CANDU design, the primary fluid is heavy water. They are used in the most nuclear power plants, but there are many types according to the reactor type. Steam generators are heat exchangers used to convert feedwater into steam from heat produced in a nuclear reactor core.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |