Method of and apparatus for distributing a fluid into at least two heated tubes arranged in parallel relation with respect to the flow of fluid therethrough

Claim 1

A METHOD OF HEATING OPERATING FLUID IN A FORCED FLOW STEAM GENERATOR, COMPRISING: CONDUCTING OPERATING FLUID FROM A COMMON SUPPLY SOURCE INDEPENDENT OF SAID STREAM GENERATOR THROUGH A FIRST FEED PIPE INTO A FIRST HEADER AND THEREFROM INTO A PLURALITY OF TUBES WHICH ARE ARRANGED IN PARALLEL RELATION WITH RESPECT TO THE FLOW OF OPERATING FLUID THERETHROUGH, THROTTLING THE FLOW OF OPERATING FLUID AT A PREDETERMINED LOCATION IN SAID TUBES, HEATING SAID TUBES, AND CONDUCTING ADDITIONAL OPERATING FLUID AT VARIABLE RATES OF FLOW SIMULTANEOUSLY FROM SAID SUPPLY SOURCE THROUGH A SECOND FEED PIPE CONNECTED IN PARALLEL WITH THE FIRST FEED PIPE TO SAID SUPPLY SOURCE INTO A SECOND HEADER AND THEREFROM INTO SAID TUBES AT SAID PREDETERMINED LOCATIONS, WHEN THE STEAM GENERATOR IS OPERATED ABOVE A PREDETERMINED LOAD.