Abstract
A new concept for a liquid metal heated steam generator for use with liquid metal fast breeder reactors is presented. The new system eliminates several of the more serious problems associated with single pass shell and tube heat exchangers which have been proposed for this application. Separation of boiler and superheat stages is accomplished in the new system as well as increased protection against sodium-water reactions and the elimination of an intermediate, sodium-sodium, heat exchanger. The steam generator employs natural circulation boiling tubes (thermal convection tubes) as a means of transferring heat from primary sodium to water. A method of analysis of these tubes is presented, and the results as applied to a 3000 MW steam generation system are given.
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