FIELD: heat engineering. SUBSTANCE: shell of heat exchanger is provided with covers fitted with separating partitions. Mounted in shell is cooling member made in form of tubes with flat cross section which are provided with turbulators and outer fins. Tubes are made in form of rings mounted concentrically. These rings are connected with branch pipes feeding and discharging one of heat-transfer agents. Branch pipes are connected to cover and shell through seals. Mounted in inter-tube space are guide and separating partitions engageable with each other by ends. EFFECT: enhanced reliability. 3 dwg
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