DOUBLE-PIPE STREAM HEAT EXCHANGER Russian patent published in 2013 - IPC F28F1/00 

FIELD: heating.

SUBSTANCE: double-pipe heat exchanger for liquid and gaseous media, which contains a heat exchange pipe and an external turbulence promoter dividing inter-tube space into inlet and outlet cavities, which are concentrically located in the cylindrical housing. On the turbulence promoter surface there are the holes serving as medium injection to the cavity between the heat exchange pipe and external turbulence promoter. Inside the heat exchange pipe there concentrically located is an internal turbulence promoter dividing inter-tube space into inlet and outlet cavities and having the holes on the surface, which serve as medium injection into the cavity between the heat exchange pipe and the internal turbulence promoter. Use of the invention will allow intensifying heat exchange due to almost complete removal of a boundary layer from outer and inner surfaces of the heat-conducting pipe with heated (or cooled) medium.

EFFECT: increasing heat transfer coefficient between heat carrier and heated medium up to 10 times and more; reduction of the required heat exchange surface corresponding to it, length of stream heat exchangers, their weight and overall dimensions.

2 dwg