HEAT EXCHANGER Russian patent published in 2010 - IPC F28D7/10 

FIELD: heating systems.

SUBSTANCE: invention refers to heat engineering and can be used as high heat-stressed submersible heat exchanger of tube-in-tube type. Heat exchanger, mainly submersible one, of tube-in-tube type, contains external tube, one end of which is fixed in tube sheet and the other one is plugged, internal tube fixed in the other tube sheet and the open end of which faces bottom zone of external tube; internal tube is placed throughout the length with a gap in casing rigidly fixed beyond external tube to internal tube; at that, casing edge facing bottom area of external tube envelopes internal tube so that open flow areas of casing and internal tube coincide.

EFFECT: proposed design of heat exchanger will allow using it as module of submersible-type steam-generating plant, which meets requirements for reliability, processability, erection at high specific heat stresses of occupied volume of nuclear power plant.

1 dwg