HEAT EXCHANGER Russian patent published in 2008 - IPC F28D7/06 

FIELD: nuclear power engineering.

SUBSTANCE: invention can be used when designing air heat exchangers of emergency cooling systems and for passive heat discharge from reactor plants as well as when designing separators-superheaters of turbine plants of nuclear power plants. Heat exchanger consists of a shell wherein a ring-shaped bank of tubular platens is located. Platens are installed in such a way that they form openings between each other and are made in the shell cross section as bent to one side in the direction from central header to shell wall. Tubes of intermediate platen sections are located on the shell wall side and form therewith periphery channels wherein baffle plates are arranged in tiers. In openings there mounted transversally are vertical partitions connected with the appropriate baffle plates in each tier. In periphery channels each of the periphery flows after coming across the baffle plate is drawn back to clearances between tubes of intermediate platen section.

EFFECT: increase of hydraulic resistance of periphery channels, which increases air flow through intertube platen space and heat exchanger capacity.

2 cl, 4 dwg