HEAT EXCHANGER Russian patent published in 1999 - IPC

FIELD: heat exchanging apparatus. SUBSTANCE: this heat exchanger can be used for cooling water solutions of salts in equipment setups intended for purification of natural water and sewer effluent. Heat exchanger has horizontal heat-exchanging elements of pipe-in-pipe type located one above other and connecting panels at end of each heat-exchanging element. Each connecting panel is made up of two tube plates, shell, and wall. All these components are made of thin sheet material of thickness which is equal to thickness of pipes. Tube plates are welded to pipes. Heat-exchanging elements are secured on supports. Surface of internal pipes of heat-exchanging elements is made with knurling. Aforesaid embodiment of heat exchanger is of enhanced operational reliability combined with reduced amount of materials needed for manufacture. EFFECT: higher efficiency. 1 cl, 1 dwg