FIELD PIPE Russian patent published in 2014 - IPC F28D7/00 

FIELD: machine building.

SUBSTANCE: straight-flow steam generator Field pipe comprises downcomer pipe, mid pipe arranged with clearance at the latter and outer pipe with outer surface flown over by heating heat carrier. Said clearance comprises heat-insulating material while sealant is arranged at lower part of clearance end. Mid pipe outer surface accommodates spiral element designed to intensify heat exchange processes between heat carrier and inner heat carrier in Field pipe.

EFFECT: higher heat-transfer between outer pipe inner surface and inner heat carrier.

8 cl, 4 dwg